INTERACTIVE AND ADAPTIVE GRID QUALITY ASSESSMENT

NUMERICAL GRID GENERATION REPRESENTS THE CRITICAL LINK THAT CONNECTS NUMERICAL, PARTIAL DIFFERENTIAL EQUATION SOLVERS WITH REAL-WORLD COMPUTATIONAL SIMULATIONS. FOR AEROSPACE APPLICATIONS, VEHICLES WITH COMPLEX GEOMETRIC CONFIGURATIONSAND SOLUTION BEHAVIOR ARE TO BE CONSIDERED. BLOCK-STRUCTURED GRIDS HAVE BEEN RECOGNIZED AS AN EFFECTIVE TOOL FOR SUCH CONSIDERATIONS. LITTLE HAS BEEN DONE, HOWEVER, TO ASSESS THE QUALITY OF THE GENERATED GRIDS. IN THIS PROJECT, THE FEASIBILITY OF EFFECTIVE GRID-QUALITY ASSESSMENT WILL BE ESTABLISHED THROUGH THE CREATION OF MEASUREMENT TECHNIQUES AND A PROTOTYPE CODE. THE PROTOTYPE CODE IS A DELIVERABLE ITEM AND WOULD PROVIDE THE FOUNDATION UPON WHICH A NUMBER OF GRID-DIAGNOSTIC TOOLS WOULD ARISE FROM SUBSEQUENT PHASE II EFFORTS. THE PROTOTYPE CODE WILL PRESENT INTERACTIVE GRAPHICAL DISPLAYS OF GRID-QUALITY OBJECTS SIMULTANEOUSLY WITH THE GRID AND THE CONTROL NET THROUGH WHICH LOCAL GRID MANIPULATIONS WOULD TRANSPIRE. WITH THE MANIPULATIONS AVAILABLE FOR LOCAL CORRECTIVE ACTIONS IN RESPONSE TO QUALITY INDICATORS, THE USER WOULD BE ABLE TO PERFORM INTERACTIVELY ADAPTIVE GRID CYCLES. IN EFFECT, THIS WOULD REPRESENT A FORM OF INTERACTIVE COMPUTATIONAL FLUID DYNAMICS. THE EXECUTION OF THESE LATTERACTIONS WOULD REQUIRE RAPID NETWORKING BETWEEN THE SUPERCOMPUTER AND THE WORKSTATION. ALTOGETHER, THE GRID DIAGNOSTIC CAPABILITY WOULD LEAD TO IMPROVED NUMERICAL SIMULATIONS. NUMERICAL GRID GENERATION REPRESENTS THE CRITICAL LINK THAT CONNECTS NUMERICAL, PARTIAL DIFFERENTIAL EQUATION SOLVERS WITH REAL-WORLD COMPUTATIONAL SIMULATIONS. FOR AEROSPACE APPLICATIONS, VEHICLES WITH COMPLEX GEOMETRIC CONFIGURATIONSAND SOLUTION BEHAVIOR ARE TO BE CONSIDERED. BLOCK-STRUCTURED GRIDS HAVE BEEN RECOGNIZED AS AN EFFECTIVE TOOL FOR SUCH CONSIDERATIONS. LITTLE HAS BEEN DONE, HOWEVER, TO ASSESS THE QUALITY OF THE GENERATED GRIDS. IN THIS PROJECT, THE FEASIBILITY OF EFFECTIVE GRID-QUALITY ASSESSMENT WILL BE ESTABLISHED THROUGH THE CREATION OF MEASUREMENT TECHNIQUES AND A PROTOTYPE CODE. THE PROTOTYPE CODE IS A DELIVERABLE ITEM AND WOULD PROVIDE THE FOUNDATION UPON WHICH A NUMBER OF GRID-DIAGNOSTIC TOOLS WOULD ARISE FROM SUBSEQUENT PHASE II EFFORTS. THE PROTOTYPE CODE WILL PRESENT INTERACTIVE GRAPHICAL DISPLAYS OF GRID-QUALITY OBJECTS SIMULTANEOUSLY WITH THE GRID AND THE CONTROL NET THROUGH WHICH LOCAL GRID MANIPULATIONS WOULD TRANSPIRE. WITH THE MANIPULATIONS AVAILABLE FOR LOCAL CORRECTIVE ACTIONS IN RESPONSE TO QUALITY INDICATORS, THE USER WOULD BE ABLE TO PERFORM INTERACTIVELY ADAPTIVE GRID CYCLES. IN EFFECT, THIS WOULD REPRESENT A FORM OF INTERACTIVE COMPUTATIONAL FLUID DYNAMICS. THE EXECUTION OF THESE LATTERACTIONS WOULD REQUIRE RAPID NETWORKING BETWEEN THE SUPERCOMPUTER AND THE WORKSTATION. ALTOGETHER, THE GRID DIAGNOSTIC CAPABILITY WOULD LEAD TO IMPROVED NUMERICAL SIMULATIONS.