NA Digest Sunday, March 16, 1997 Volume 97 : Issue 11

Today's Editor:
Cleve Moler
The MathWorks, Inc.

Submissions for NA Digest:

Mail to

Information about NA-NET:

Mail to

URL for the World Wide Web: -------------------------------------------------------

From: Hu Kunzhong <>
Date: Mon, 10 Mar 1997 16:50:03 +0800 (CST)
Subject: Seeking Finite Element Navier Stokes Solver

We commit a project about solving incompressible velocity
-pressure Navier-Stokes equations with Finite Element Method.
We have many problems in solving this problem. Who have the
program about this field? Would you please share it with me!

Thank you very much for your kindly help! I am looking forward
to your response.

Hu Kunzhong, Master of Univ. of Sci. and Tech. of China (USTC)
Mail address, Room 4-202, P.O. box 4, Hefei Anhui P.R. China
E-Mail, Tel, 0086-551-3601237


From: Alexei Kuntsevich <>
Date: Mon, 10 Mar 1997 10:19:06 -0800
Subject: Software Available for Nonsmooth Optimization

Dear colleagues,
New freeware libraries for nonsmooth optimization are available
through the URL:
One can download Matlab, Fortran and C sources designed for
a number of platforms from the site, get postscript
files containing the complete manual and read the manual and
instructions online. Along with this, one can see there the
results proving a high performance of the program.
The site is devoted to the Solver for Local Nonlinear (non-smooth)
Optimization Problems - SolvOpt.
SolvOpt is a new implementation of the known Shor's R-algorithm
with space dilation along the difference of two successive

Dr. Alexei V. Kuntsevich
Institut fuer Mathematik
Karl-Franzens Universitaet
Heirichstr., 36
A-8010 Graz, Austria
fax: +43 316 3809815
tel: +43 316 3805173


From: Martin Groetschel <>
Date: Sun, 16 Mar 1997 17:12:32 +0100
Subject: SoPlex, New LP Solver Available


I am happy to announce the availability of a new LP solver called
SoPlex, the sequential object-oriented simplex. For academic and
noncommercial use, it may be retreived for free from:

SoPlex is an object-oriented implementation of primal and dual
simplex algorithms in C++ I have developed for my Ph.D. thesis
"Paralleler und Objektorientierter Simplex-Algorithmus".

Roland Wunderling


From: Mark Hagger <>
Date: Mon, 10 Mar 1997 14:04:17 +0000
Subject: Domain Decomposition On Unstructured Grids

Announcing the first release of DOUG (v1.95)
-- Domain decomposition On Unstructured Grids --

DOUG is a black box parallel iterative solver for finite element
systems arising from elliptic partial differential equations. Used in
conjunction with a finite element discretisation code, DOUG will solve
the resulting linear systems using an iterative method and provides a
range of powerful domain decomposition preconditioners.

The code is designed to run effectively in parallel on virtually any
machine that supports MPI. The matrix-vector operations arising in the
iterative method are parallelised using graph partitioning software
and additive Schwarz preconditioners can be automatically constructed
by DOUG using only minimal input. In this first release a full
additive Schwarz preconditioner with automatically generated coarse
grid is provided in 2D only. A version without the coarse grid is
available in 3D.

DOUG makes no assumptions whatsoever about the finite element mesh
that the problem arises from; it may be as unstructured as necessary
and only the basic output from the mesh generator and the finite
element discretisation are required as inputs to DOUG. The
preconditioner can then be used within a range of iterative methods.
Currently CG and BiCGSTAB are implemented, other methods of this type
can be added.

More details and the code itself may be found at

The development of this code was part of the UK Engineering and
Physical Sciences Research Council Project GR/J88616 on Parallel
Methods for Elliptic PDEs.

Mark Hagger
Department of Mathematics
University of Bath
Claverton Down
Bath, BA2 7AY


From: Lutz Grosz <>
Date: Tue, 11 Mar 1997 13:50:20 +1100 (EST)
Subject: VECFEM, Version 3, is Released

VECFEM (version 3) is released now !

VECFEM is a finite element solver for non-linear systems of
boundary and initial boundary value problems on arbitrary 1D,
2D and 3D domains. Important features are

* for parallel and vector computers
* Tcl/tk-based graphical user interface
* MAPLE-based code generator

More informations are available at the URLs:

Lutz Grosz
CMA/SMS, Australian National University (ANU), Canberra, Australia


From: Ira Eick <>
Date: Tue, 11 Mar 1997 20:02:48 -0500 (EST)
Subject: Test Problems for Solution of 2-D Burger's Equation

We are currently studying the numerical solution of the two dimensional
Burger's Equation on the unit square with homogeneous boundary conditions for
small values of the parameter epsilon.

Our formulation of the problem follows:

Let U be a vector function of u(x,y,t) and v(x,y,t) then

U_t = epsilon (Lapacian(U)) - (U dot Del) U

We would greatly appreciate information on any known solutions to be used as
test problems for our results.

Thanks very much for your assistance.

Ira Eick
Dept. of Math. and Stat.
University of North Florida
4567 St, Johns Bluff Road South
Jacksonville, FL 32216



From: Siang Peng Oh <peng@astro.Princeton.EDU>
Date: Tue, 11 Mar 1997 20:27:26 -0500 (EST)
Subject: Tesselation of Sphere

Does anyone know of the optimal way of tiling the sphere into a large
number (N~10**6) of approximately equal area, equal angular size tiles?
I am working on the Cosmic Microwave Background, and we would
like to consider the optimal way of pixelizing the sky. Currently we
inscribe one of the Platonic regular solids onto the sphere and pixelize
the solid, but for various reasons it would be nice to have a grid which
is as regular as possible in (theta,phi). I know an exact solution is not
possible for N>20, but wonder if there is a close to optimal solution for
integrating over the sphere.

Many thanks,

Siang Peng Oh


From: Jeremy Levesley <>
Date: Thu, 13 Mar 97 10:36:17 GMT
Subject: Fast Fourier Transform on Sphere

I am looking for an implementation of Driscoll and Healy's
FFT on the sphere.

Jeremy Levesley


From: Kendall Atkinson <>
Date: Fri, 14 Mar 1997 16:35:55 -0600 (CST)
Subject: Mathematical Foundations of Computer Graphics

Mathematical foundations of computer graphics

I am interested in suggestions or comments on books that would be
suitable for a course with a title like "Mathematical Foundations
of Computer Graphics". I realize this is not a numerical analysis
question, strictly speaking, but much of the subject has a great
deal of numerical analysis in it. I already know of a number of
books, but most are fairly limited in some way. I want the course
to be taught at the higher undergraduate to beginning graduate level.

In case others are interested in this same topic, I will assemble
any replies in a file which will be posted on my web site.

Ken Atkinson
University of Iowa


From: Wilfried Gansterer <>
Date: Wed, 12 Mar 97 10:41:44 MEZ
Subject: High Performance Fortran in Numerical Analysis

Who is using HPF in Numerical Analysis?

We are interested in HPF-codes for

LU-decompositions (Gauss-Elimination)
Algorithms for eigenvalue-problems.

If you are working on HPF-codes for these topics or if you know of
such activities , please contact us !

Harald Ehold Wilfried Gansterer

Vienna University Vienna University of Technology


From: Robert A. van de Geijn <>
Date: Fri, 14 Mar 1997 10:26:46 -0600
Subject: Parallel Linear Algebra Package

PLAPACK Users' Guide Available

PLAPACK (Parallel Linear Algebra PACKage) is a library infrastructure
for the parallel implementation of linear algebra algorithms and
applications on distributed memory supercomputers such as the Intel
Paragon, IBM SP2, Cray T3D/T3E, SGI PowerChallenge, and Convex
Exemplar. This infrastructure allows library developers, scientists,
and engineers to exploit a natural approach to encoding so-called
blocked algorithms, which achieve high performance by operating on
submatrices and subvectors. This feature, as well as the use of an
alternative, more application-centric approach to data distribution,
sets PLAPACK apart from other parallel linear algebra libraries,
allowing for strong performance and significantly less programming by
the user.

The PLAPACK Users' Guide,

"Using PLAPACK: Parallel Linear Algebra Package"

is now available from The MIT Press. For further information, see

or contact

Robert A. van de Geijn Taylor Hall 4.115C
Associate Professor (512) 471-9720 (office)
Department of Computer Sciences (512) 471-8885 (fax)
The University of Texas
Austin, Texas 78712


From: Michael Breitner <>
Date: Mon, 10 Mar 1997 16:12:32 +0100 (NFT)
Subject: Temporary Address Change for Michael Breitner


I will be on leave from the Technische Universitaet Clausthal as visiting
Assistant Professor at the UCSD until July 7, 1997. New temporary address:

Dr. Michael H. Breitner
Department of Mathematics
University of California, San Diego
9500 Gilman Drive
La Jolla, California 92093-0112
Fax: USA + 619 534 5273
Email: (forwarded)


From: Adolfy Hoisie <>
Date: Tue, 11 Mar 1997 09:35:44 -0500 (EST)
Subject: Change of Address for Adolfy Hoisie

I have moved from the Cornell Theory Center to
the Los Alamos National Laboratory as of the
beginning of March.

My new coordinates are:

Adolfy Hoisie
Los Alamos National Laboratory
Scientific Computing, CIC-19, MS 256
Los Alamos, NM 87545
Phone: (505) 667-5216


From: Robert Voigt <>
Date: Mon, 10 Mar 1997 17:32:50 -0500
Subject: New Position for Robert Voigt

As of March 1, 1997 I have assumed the position of Director of the
Computational Science Cluster at the College of William and Mary. This is
a part time position, and consequently, I will continue at the National
Science Foundaton, also on a part-time basis. For the time being I can be
best reached at and (703) 306-1900. When permanent
communicaitons arrangements have been established at William and Mary, I
will place another posting in na.digest.

Bob Voigt


From: Joseph Grcar <>
Date: Mon, 10 Mar 97 14:08:31 -0800
Subject: Congratulations to Margaret Wright and Cleve Moler

Congratulations are due to Margaret Wright and to Cleve Moler
on their election to the National Academy of Engineering.

-- Joe


From: Michael Ferris <>
Date: Tue, 11 Mar 1997 12:45:15 -0600
Subject: New Book on Complementarity and Variational Problems

Dear Colleague,

We are very pleased to announce the publication of a new book:

State of the Art
edited by
Michael C. FERRIS
University of Wisconsin, Madison
Jong-Shi PANG
The Johns Hopkins University

published by

Society of Industrial and Applied Mathematics

March 1997 485 pages
ISBN 0-89871-391-9

Please recommend this book to your library and/or any colleague
who might have an interest in the subject of the book.

For more information, consult the online catalog at

To order, call toll-free in USA 1-800-447-SIAM;
outside USA call 215-382-9000; Fax 215-386-7999;

Thank you very much.
Michael C. Ferris, Jong-Shi Pang.


From: Todd Veldhuizen <>
Date: Tue, 11 Mar 1997 13:59:34 -0500 (EST)
Subject: Object-oriented Numerics List

Announcement: Object-Oriented Numerics List (oon-list).

1. Topic areas

* scientific computing in object-oriented languages such as
C++ and Fortran 90
* discussion of design, implementation, and performance issues
* project, code, and book announcements
* paper abstracts and bibliography entries

2. Intended audience

* developers of object-oriented numerical libraries
* researchers and application programmers

3. Format

The list will be unmoderated for the time being. If the need
arises, we'll switch to a moderated format.

* oon-list Messages mailed individually (unmoderated)
* oon-digest Weekly digest format (unmoderated)

4. Web site

The Object-Oriented Numerics Web Site will provide:
* a searchable archive of oon-list postings
* bibliography
* list of available software packages


5. How to subscribe

Send mail to with

subscribe oon-list your-email-address


subscribe oon-digest your-email-address

as the body of the message.


From: Robert Schneiders <>
Date: Fri, 14 Mar 97 10:04:37 +0100
Subject: Latest News in Mesh Generation

Latest News in Mesh Generation
"Mesh Generation and Grid Generation on the Web":

You can find the same list with hyperlinks there. If you can
contribute to this column, please let me know

o Studentship at the department of mechanical engineering,
University of British Columbia: Improvement and extension
of existing triangular and tetrahedral mesh generators
(contact Carl-Ollivier Gooch,
Application deadline is March 31.

o David Kornmann ( announces SD, a fully dynamic
constrained Delaunay triangulation engine for realtime

o Information on the 6th International Meshing Roundtable,
October 13-15, 1997, Park City, Utah, is available online

o Mesh2d and mesh3d, programs for triangular / tetrahedral mesh
generation from Bilge Kaan Karamete(,
are available on the net.

o There are new open positions for people with experience in mesh

o Bojan Niceno ( has announced his two-
dimensional quality mesh generator Easymesh (generation of
constrained Delaunay triangulations).

o Mark Filipiak's ( technology watch report on
mesh generation is available online at

o Donald Hawken( has announced a new version
of the UGRID grid generator for 2D Euler or Navier-Stokes
simulations. Demo software and a free grid-generating screen
saver are available.

o NASA's steering committee for surface modeling and grid
generation has started to build a testcase library for surface
modeling and grid generation.

o QMG1.1, the new version of Stephen Vavasis' surface and volumetric
grid generator, is available on the net

o The last issue of the Springer journal "Engineering with Computers"
is all on mesh generation.

o The proceedings of the 5th International Mesh Generation Roundtable
and Conference 96, Pittsburgh, Pennsylvania, U.S.A. (1996), are
available online at

Robert Schneiders
Lehrstuhl fuer Angewandte Mathematik, insb. Informatik
RWTH Aachen
Ahornstr. 55
52056 Aachen
Tel.: +241-804558
Fax: +241-8888215


From: Jack Dongarra <>
Date: Tue, 11 Mar 1997 16:14:35 -0500
Subject: BLAST Forum Minutes

2/27-28 BLAST Forum Minutes

The existing BLAS have proven to be very effective in assisting
portable, efficient software for sequential, vector and shared
memory high-performance computers.

A forum has been establish to consider expanding the BLAS in a
number of directions in light of modern software, language, and
hardware developments.

On February 27-28, 1997 we held a BLAST Forum meeting in Dallas, TX.
The minutes from that meeting are available on the BLAST Forum homepage:

We are planning another meeting of the Forum sometime in May
hosted by Intel Corporation.

If you would like to contribute to this ongoing discussion specific
details can be found in the BLAST Forum homepage.

Jack Dongarra


From: Pat Worley <worley@haven.EPM.ORNL.GOV>
Date: Tue, 11 Mar 1997 11:58:00 -0500 (EST)
Subject: Gordon Conference on High Performance Computing

Note: The NA-Net community has been a part of this Gordon conference
since its inception, and we feel that it is an interesting and important
conference for numerical analysts and computational scientists involved
in High Performance Computing and the NII. We apologize for the conflict
with the SIAM Anniversary Meeting, but the scheduling was out of our
control. We hope that those not planning on attending the SIAM annual
meeting will consider applying to attend the Gordon conference.

The 1997 Gordon Conference on High Performance Computing and
Information Infrastructure: "Practical Revolutions in HPC and NII"

Chair, Anthony Skjellum, Mississippi State University,,
Co-Chair, Pat Worley, Oak Ridge National Laboratory,,

Conference web page:

July 13-17, 1997
Plymouth State College
Plymouth NH

The now bi-annual Gordon conference series in HPC and NII commenced in 1992
and has had its second meeting in 1995. The Gordon conferences are an
elite series of conferences designed to advance the state-of-the-art in
covered disciplines, and are characterized by non-commercial content,
and forward looking talks. Speakers are assured of anonymity and
referencing presentations done at Gordon conferences is prohibited by
conference rules in order to promote science, rather than publication
lists. Previous meetings have had good international participation,
and this is always encouraged. Experts, novices, and technically
interested parties from other fields interested in HPC and NII are
encouraged to apply to attend.

All attendees, including speakers, poster presenters, and session chairs
must apply to attend. We encourage people who attend Gordon to stay for the
entire week. More information on the conference will be found regularly at
the web page listed above, including the emerging list of speakers and poster

We *strongly* encourage all poster presenters to have their poster
proposals in by May 13, 1997, though we will consider poster
presentations up to six weeks prior to the conference. Application to
attend the conference is also six weeks in advance.

Information on applying for attendance may be found on the web site.

Speakers must pay the registration fee. Speaker reimbursement for
certain fees will be established at least six weeks prior to the meeting
in consultation with the conference chair.


From: Rodney Coleman <>
Date: Wed, 12 Mar 1997 16:13:39 +0100 (MET)
Subject: Symposium on Differential-Algebraic Equations

MAY 26-28, 1997

The objective of this symposium is to bring together researchers, from various
fields, actively involved in the area of Differential-Algebraic Equations (DAE).
The study of DAE involves many disciplines: simulation of physical phenomena,
differential geometry, numerical integration on manifolds, symbolic computing,
differential algebra, etc.

Through talks and open discussions we aim to encourage cross-fertilization
between these different areas. For this reason papers making openings between
disciplines would be very welcome. This symposium should also be the occasion
to review the state of the art in the field. The symposium is organized by
the Computer Algebra Team of the Laboratoire de Modelisation et Calcul,
Institut de Mathematiques Appliquees de Grenoble (LMC_IMAG).

Mathematical tools (index, canonical forms, singularities ...).
Algebraic algorithms and computation.
Numerical methods.
Software for the analysis and integration of DAE's.
Applications (physics, mechanics, chemistry, control ...).

S.L. Campbell - N. Carolina State U. (USA)
J. Della Dora - LMC-IMAG (F)
B.J. Leimkuhler - U. of Kansas (USA)
J. Tuomela - Helsinki U. of Technology (SF)
V. Gerdt - Nuclear Research Institute, Dubna (RU)

S.L. Campbell (N.Carolina State U.)
B.J. Leimkuhler (U. of Kansas)
S. Reich (Konrad-Zuse Zentrum, Berlin)
R. Marz (Humboldt U., Berlin)

We invite authors to send a one page abstract or a full paper (10 pages
maximum) before 18th April 1997.

For information please contact:

DAE 97 -- R. Coleman
Equipe de Calcul Formel
Laboratoire LMC
51 Av. rue des Math\'ematiques
BP 53
F38041 Grenoble Cedex
Tel.: (+) 33 4 76 51 43 95
Fax: (+) 33 4 76 62 12 63


From: Ken Jackson <>
Date: Wed, 12 Mar 1997 11:54:11 -0500
Subject: Southern Ontario Numerical Analysis Day

The Fifteenth Annual Southern Ontario Numerical Analysis Day will be
held on Wednesday, 30 April 1997, in the Computer Science Department of
the University of Toronto. We expect that the meeting will begin at
about 9:30 a.m. and end at about 5:00 p.m. There will be a short
reception afterwards. We will post the schedule for the meeting on our
web page by about April 16.

The distinguished speaker for the day is Professor Bob Russell of the
Mathematics Department of Simon Fraser University. Bob will give a
one-hour talk on "A Moving Mesh Method for Higher Dimensional PDEs".
In addition, there will be contributed talks of 30 minutes each, and
possibly also some poster sessions (depending on the number of talks
submitted). All contributed talks will be given in the plenary
session; there will be no parallel sessions. Interested persons are
invited to submit a title and abstract for consideration by March 31.
Talks in all areas of numerical analysis / scientific computing will be
considered. In keeping with our tradition, we encourage graduate
students to give contributed talks.

There is no registration fee for the conference, but we request that
you register by April 21 so that we will know how many people to expect
at the meeting and so that we will be able to make-up name tags etc.

For more information on NA Day and to register for the meeting, see our
web page
If you do not have access to the web, email us at


From: Simona Lilliu <>
Date: Thu, 13 Mar 1997 15:37:57 +0100
Subject: Course on Nonlinear Hyperbolic Equations

Course on
Advanced Numerical Approximation of Nonlinear Hyperbolic Equations
23-28 June 1997 Cetraro (Cosenza) - Italy

Course Director
Alfio Quarteroni Politecnico di Milano

Bernardo Cockburn University of Minnesota, Minneapolis, USA
Claes Johnson Chalmers University of Technology, Goteborg, Sweden
Chi-Wang Shu Brown University, Providence, USA
Eitan Tadmor UCLA and Tel Aviv University


Fondazione C.I.M.E.
Centro Internazionale Matematico Estivo
International Mathematical Summer Center

Simona Lilliu
Secretary of Scientific Research Division - CRS4
Via Nazario Sauro,10 - 09123 Cagliari
Voice: +39 70 2796300 Fax: +39 70 2796302


From: Edit Kurali <>
Date: Thu, 13 Mar 1997 12:54:48 -0500 (EST)
Subject: Contents, Journal of Approximation Theory

Table of Contents: J. Approx. Theory, Volume 88, Number 3, March 1997

Jeffrey J. Holt
A class of extremal functions and trigonometric polynomials

Eugenii Shustin
Interpolation by convex algebraic hypersurfaces

Franz Peherstorfer and Robert Steinbauer
Asymptotic behaviour of orthogonal polynomials on the unit
circle with asymptotically periodic reflection coefficients

Amiran Ambroladze and Hans Wallin
Pad\'e type approximants of Markov and meromorphic functions

Vittoria Demichelis
Convergence of derivatives of optimal nodal splines


Author index for Volume 88


From: Maya Neytcheva <>
Date: Thu, 13 Mar 1997 18:55:55 +0100 (MET)
Subject: Conference on Preconditioned Iterative Solution Methods

Conference on
Preconditioned Iterative Solution Methods
for Large Scale Problems in Scientific Computations
May 27-29, 1997, University of Nijmegen, The Netherlands

TOPICS COVERED INCLUDE preconditioned iterative solution methods for
- second and fourth order elliptic scalar equations and systems of equations
- mixed variable variational problems
- nonselfadjoint problems and indefinite matrix problems
- inner-outer iteration methods
- parallel implementations, efficiency measures, scalability
- robust implementations, i.e. convergence uniform with respect to meshsize
parameter and singular perturbation parameters
- applications for Navier's equations and Stokes problem
- applications for nonlinear problems, such as electromagnetic field,
plastic flow, Navier-Stokes, and Miscible displacement problems
- Biomechanical applications; Helmholtz equation and
applications in Computer Tomography.

Deadline for submission of full papers: April 2, 1997.
Referee reports and notification of acceptance: May 2, 1997.

Before April 12, 1997 - f. 450.
At the registration desk - f. 600 (currently \$ 350).
For students and Ph.D students, f. 350 and f. 500, respectively.

Updated details regarding submission of papers, speakers, etc.
can be obtained directly from
or by contacting the organizers:

attn. O. Axelsson or M. Neytcheva
Department of Mathematics
Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands
e-mail: fax: +31 (0)24 3652140


From: B J Leimkuhler <>
Date: Fri, 14 Mar 97 12:23:24 GMT
Subject: Symposium on Algorithms for Macromolecular Modelling


Limited financial assistance is available for younger researchers
to attend the 2nd International Symposium on Algorithms for
Macromolecular Modelling, Berlin, May 21-24, 1997.

The symposium will be held May 21-24, 1997 at the Konrad Zuse Center
in Berlin.

The meeting will bring together scientists from various
branches of (applied) mathematics, physics, chemistry, and
biology who have been dealing with molecular dynamics and
molecular modelling. The broad purposes of the symposium are
(i) to provide an international forum for communicating
state-of-the-art developments in molecular modelling algorithms,
and (ii) to improve the prospects for future international
collaborations by emphasizing the involvement of younger scientists
from both sides of the Atlantic.

Symposium topics:
* Advanced timestepping in molecular dynamics
* Quantum-classical dynamics
* Free energy and ensemble caculations
* Structure determination
* Electrostatics

Confirmed Invited Speakers:

H.J.C. Berendsen (Groningen) B. Lesyng (Warsawa)
B.J. Berne (New York) Ch. Lubich (Tuebingen)
J. Board (Duke) A. Mark (Zuerich)
B.R. Brooks (Bethesda) M. Parrinello (Stuttgart)
R. Elber (Jerusalem) H. Scheraga (Cornell)
R.B. Gerber (Jerusalem) T. Schlick (New York)
H. Grubmueller (Munich) K. Schulten (Urbana)
W.F. van Gunsteren (Zuerich) Ch. Schuette (Berlin)
J. Hermans (Chapel Hill) D. Shalloway (Cornell)
K. Kuczera (Lawrence) R.D. Skeel(Urbana)
B. Leimkuhler (Lawrence) J. Straub (Boston)
W. Yang (Duke)
This meeting is being sponsored jointly by the US National Science
Foundation, The German Research Federation and the Konrad Zuse Center.
A world wide web site for the meeting has been established at location

Some funds have been allocated to encourage younger US-based
researchers to attend this meeting. The amount per researcher
will be adequate to cover local living expenses in Berlin during
the meeting (about $500).

Eligibility: PhD students, Postdocs, and pre-tenure faculty at US
research institutions, whose research is related to the themes of the
meeting. Applications from women scientists and members of
under-represented ethnic groups are especially encouraged.

Application Procedure: Send a *brief* email, containing
at most about 200 words, describing your qualifications and reasons
for wanting to attend the meeting. Include the name and electronic
(email) address of one reference. Applications will be considered
successively on the first of each month until all funds allocated
for this purpose have been distributed.

Please use the following email address for applications and inquiries:


From: Ed Overman <>
Date: Fri, 14 Mar 1997 09:48:43 -0500 (EST)
Subject: Euler Equations, Navier Stokes Equations, and Singularities

We are organizing a conference at the Ohio State University with the title
"The Euler Equations, Navier Stokes Equations, and Singularities" for the
dates April 18-20, 1997. We enclose a description of this conference which
we ask you to post in your department and share with interested faculty and

Sincerely yours,

George Majda
Ed Overman

Conference on
The Euler Equations, Navier Stokes Equations, and Singularities

Department of Mathematics
The Ohio State University
April 18-20, 1997

This conference will provide an interactive scientific forum between
theoreticians, computational scientists, and experimentalists on singularity
formation in the incompressible Euler equations and the possible
regularization by the Navier-Stokes equations. Singularities are either
known or believed to occur in many problems involving incompressible, ideal
fluids including the evolution of vortex sheets, Hele-Shaw interfaces, and
droplet formation in thin jets. The last example is a specific instance of
singularity formation as a precursor to the general property of topological
change. Similar phenomena also happen in the evolution and formation of

Any model of a problem with anticipated singularity formation is extremely
challenging, whether the problem is studied analytically, experimentally, or
numerically, due to the development of arbitrarily small scales. If a
singularity forms, it often indicates that a model for a given physical
phenomenon is incomplete or inadequate. In this situation, an important
regularizing effect such as, but not limited to, viscosity is usually
omitted in the formulation of the problem in order to simplify the model.
Therefore, a modeler is challenged to obtain the missing physical mechanism
and to incorporate this missing mechanism into the system of equations which
describe the problem.

We hope to expose the participants to a wide range of problems and to an
understanding of the various approaches to solving them. The theme of this
conference is to bring theoreticians, computational scientists, and
experimentalists together to provide a forum for interaction among different
research groups.

Invited Speakers

Ann Almgren (Lawrence Berkeley National Laboratory)
Andrea Bertozzi (Duke University)
Michael Brenner (MIT)
Peter Constantin (University of Chicago)
Steven Cowley (Cambridge University)
Weinan E (Courant Institute)
John D. Gibbon (Imperial College (London))
John Greene (General Atomics Company (San Diego))
Diane Henderson (Pennsylvania State University)
Robert Kerr (National Center for Atmospheric Research)
Jian-Guo Liu (Temple University)
Andrew Majda (Courant Institute)
Anatol Roshko (California Institute of Technology)
Mike Shelley (Courant Institute)
Tom Sideris (University of California at Santa Barbara)
Michael Siegel (New Jersey Institute of Technology)
Esteban Tabak (Courant Institute)
Jiahong Wu (Institute for Advanced Study)}

Please see our web page
for further details and for registration information.

Conference Organizers:
George Majda (
Ed Overman (


From: Manuel Salas <>
Date: Fri, 14 Mar 1997 15:09:10 -0500
Subject: Symposium on Modeling Complex Turbulent Flows


AUGUST 11-13, 1997

Despite centuries of research, many mysteries of turbulence
remain unsolved and the phenomenon defies quantification to
even engineering accuracy. The advent of supercomputers has
shifted the focus of turbulence research from modeling to
direct numerical simulations (DNS). It is, however, unlikely
that DNS will become an affordable engineering tool in the
foreseeable future. Turbulence modeling continues to be an
important challenge to computing engineering flows. Exacting
requirements for the design of advanced flight vehicles,
supersonic combustors, and long-term weather prediction
capability, to name a few examples, demand the development
of sophisticated turbulence models for complex flows. The
purpose of this symposium is to bring together leading
researchers in the field of turbulence modeling to (i)
evaluate recent progress in modeling, and (ii) anticipate
future modeling requirements and preview future research

Those interested in attending or if you would like further
details, please e-mail the following information to Emily Todd
by May 2, 1997: Name and title; address; telephone; fax; and
your field(s) of interest. A detailed agenda and relevant
information will be posted on the Web at:

Emily Todd, Conference Manager
ICASE, Mail Stop 403
NASA Langley Research Center
Hampton, VA 23681-0001

Telephone: (757) 864-2175;
FAX: (757) 864-6134;


From: Yves Tourigny <>
Date: Sat, 15 Mar 1997 11:55:36 GMT
Subject: Bristol/Bath Numerical Analysis Day


Everyone interested in numerical analysis and computational
mathematics is invited to attend a day of informal talks
given by members of the Universities of Bath and Bristol.

The guest speaker is Professor M.J. Baines (Reading) who
will talk on "Recent advances in adaptive relocation methods".

Talks will also be given by Steve Benbow, Gordon Collins,
Ivan Graham, Richard Kerswell, Gabriel Lord and Nigel Mottram.

The meeting will take place on March 27th in the School of Mathematics
of the University of Bristol, University Walk, Bristol, UK,

For further information, consult the Web page at the URL

http: //

or contact Yves Tourigny (, tel: 0117 928 8630).


From: Yuefan Deng <>
Date: Mon, 10 Mar 1997 19:21:04 -0500
Subject: Postdoctoral Positions at Stony Brook

State University of New York at Stony Brook
Department of Applied Mathematics and Statistics

The department expects to have two or more postdoctoral positions
in computational applied mathematics available for the
1997-98 academic year (or sooner).
Qualified candidates should have computational experience in one
or more areas of: fluid dynamics, parallel computing, hyperbolic
conservation laws, elastic and plastic deformation,
or flow in porous media.

Applicants should send vita, descriptions of research interests, and
three recommendation letters to: James Glimm, Chair, Department of
Applied Mathematics and Statistics, SUNY at Stony Brook, Stony Brook,
NY 11794-3600.

SUNY at Stony Brook is an equal opportunity/affirmative action
employer and educator and encourages applications from women and


From: P. Wesseling <>
Date: Tue, 11 Mar 1997 11:16:07 +0100 (MET)
Subject: Graduate Research Assistentship at Delft University of Technology

The Section Numerical Analysis is seeking a PhD student to work on the

"Numerical methods for computational fluid dynamics on unstructured grids"

The Section Numerical Analysis has developed methods to compute flows with
high accuracy and efficiency on structured but strongly nonuniform and
nonorthogonal staggered grids. To increase industrial applicability it is
desirable to include unstructured grids. It turns out that the structured
grid method that has been developed can be extended to unstructured grids.
The purpose of the project is to study this further and to demonstrate the
feasibility of the approach on industrial test cases. The project is part of
the research program of the J.M. Burgers Center, the national Graduate School
for Fluid Dynamics.

Candidates are sought with a Master's degree in applied mathematics with
experience in numerical analysis and mathematical physics, or in related
disciplines with experience in scientific computing and theoretical fluid

The PhD student will be employed by the Faculty of Technical Mathematics and
Informatics for a period of four years. The project should lead to the doctoral
degree. The monthly salary starts at HFL 2114, with annual increases to
HFL 3775 in the fourth year.

Applications are to be received before May 1, 1997, and should include
a summary of the study program, grades received, resume and at least one
letter of reference. Applications can be submitted through regular mail,
mentioning ref TWI9701.We on the envelope and on the application, to

Mr. W.A. Maertens
P&O Office
Faculty of Technical Mathematics and Informatics
P.O. Box 356, NL-2600 AJ Delft, The Netherlands


From: Bengt Asvall <>
Date: Tue, 11 Mar 1997 15:17:09 +0100
Subject: Postdoctoral Position at University of Bergen

Postdoctoral appointment at University of Bergen, Norway

For application details, contact Ms.;
or, for other information, the principal investigators,
{Bengt.Aspvall, Petter.Bjorstad, Hans.Munthe-Kaas}

The closing date for applications is <<< April 1 >>>.


End of NA Digest