*Research Group Prof. Vornberger*

###
Abstract: Flow simulation with FEM on massively parallel systems

F. Lohmeyer, O. Vornberger
An explicit finite element scheme based on a two step Taylor-Galerkin algorithm allows the solution of the
Euler and Navier-Stokes Equations for a wide variety of flow problems. To obtain useful results for realistic
problems one has to use grids with an extremely high density to get a good resolution of the interesting parts
of a given flow. Since these details are often limited to small regions of the calculation domain, it is
efficient to use unstructured grids to reduce the number of elements and grid points. As such calculations are
very time consuming and inherently parallel the use of multiprocessor systems for this task seems to be a very
natural idea. A common approach for parallelization is the division of a given grid, where the problem is
the increasing complexity of this task for growing processor numbers. Here we present some general ideas for
this kind of parallelization and details of a Parix implementation for Transputer networks. Results for up to
1024 processors show the general suitability of our approach for massively parallel systems.

####
Notes on Numerical Fluid Mechanics, Vieweg 1994

Postscript (64 kB)