ADAPTIVE GRIDS FOR RAVEN

THIS PROPOSAL IS FOR A STUDY OF THE FEASIBILITY OF ADAPTIVE GRID ALGORITHMS FOR IMPLEMENTATION, REFINEMENT AND INCORPORATION INTO AN EXISTING TIME DEPENDENT THREE DIMENSIONAL NAVIER-STOKES COMPUTER MODEL, THE RAVEN CODE. THE STUDY WILL INVOLVE ASSESSMENT AND/OR EXTENSION OF EXISTING ADAPTIVE GRID TECHNIQUES TO DETERMINE THAT WHICH IS OPTIMAL AND EFFICIENT FOR THE PHASE II IMPLEMENTATION IN RAVEN, WITH CONSIDERATION GIVEN TO THE COMPUTER ARCHITECTURE OF THE CRAY XMP AND 2S SYSTEMS. ALSO, THE WORK WILL INVOLVE EVALUATION OF MORE ADVANCED FLUID DYNAMIC SOLUTION ALGORITHMS FOR INCORPORATION INTO THE RE-STRUCTURED RAVEN. THE COMBINATION OF ADAPTIVE GRID GENERATION AND ADVANCED FLUID DYNAMIC ALGORITHMS, BOTH TAILORED TO SUPER-COMPUTER ARCHITECTURE, HAS TREMENDOUS POTENTIAL FOR IMPROVING THE EFFICIENCY, EASE OF USE, ROBUSTNESS, AND ACCURACY OF SOLUTIONS.