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Foil 17 CPS713 Case Study II) Computational Needs for CFD and Numerical Relativity

From Overview of CFD and Numerical Relativity Case Study CPSP713 -- Autumn Semester 1994. by Geoffrey C. Fox


1 It is possible that a teraflop computer may be sufficient to "solve" the collision of two black holes
  • Solution defined as producing a catalog of wave forms which can be used in analysis of initial LIGO data
  • This is not of course only important issue and other studies may require more or less computer time
2 NASA has documented carefully estimates of computer needs for various CFD approaches.
  • Although not entirely clear what CFD approaches are actually relevant to design new aircraft or cars.
    • Better -- this would mean using more accurate solutions to full equations
    • Faster -- This is perhaps more promising and requires Integration of several distinct simulations in full design cycle
    • This Multidisciplinary analysis and design underlies agile manufacturing or concurrent engineering
3 Snapshot results are:
  • Petaflop performance needed for full Navier Stokes equations for full aircraft
  • Teraflop performance needed for Multidisciplinary Analysis using Reynolds averaged approximations with turbulence models

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