Computational PDEs Unit: SPRINT3D

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SPRINT3D Software

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The third phase of the SPRINT project commenced in October 1993. Work on a 3D adaptive mesh code is almost complete and a prototype SPRINT3D code has already been used to solve a challenging shock wave problem, see [36].

A parallel meshing capability is being developed in conjunction with Prof. Nigel Weatherill's group in the Dept. of Civil Engineering, University of Wales, Swansea, in an EPSRC funded project on parallel mesh generation and adaptivity (see [40], [49], [50], [51]). This work builds in part on earlier parallel algorithm development at the University of Leeds (see [28], [33], [41]).

As mentioned above the test problem is a shock wave problem. A shock wave driven by gas at a high pressure and density is modelled as it moves into a 3-D rectangular domain via a rectangular nozzle, the domain containing stationary gas of a low pressure and density. If you have a quicktime viewer suitably mounted then you should be able to view this short movie (1.7mb) which shows the shock travelling into the domain in terms of the density in the cells along the walls of the domain. The adaption of the mesh is particular noticeable as it tracks the shock. In this movie the colour scale ranges from blue for high density to red for low density. The calculations were performed in parallel on a network of 8 Silicon Graphics O2 workstations. If you are unable to view the movie then stills from the movie can be viewed from the following links.

Initial Conditions

Figure One

Figure Two

Figure Three

Last Modified: 2Sept97


rogerf@comp.leeds.ac.uk