Viscous Compressible Flow Simulations Using Supercomputers
The appearance of supercomputers accelerated the development of the sophisticated Computational Fluid Dynamics for the practical use. Even the “Reynolds-averaged” Navier-Stokes computations are in the matured stage with the help of supercomputers. For instance, two-dimensional Navier-Stokes code called ‘ARC2D’ developed by T.H.Pulliam and J.L.Steger at NASA Ames Research Center requires only 5 minutes to obtain the converged solution with 27000 grid points on CRAY XM-P. The two-dimensional code called ‘LANS2D’ developed by Obayashi and the present author currently requires less than 1 minute with 6400 grid points and is becoming faster using Japanese supercomputer, Fujitsu VP-400. Now, it seems that two-dimensional Navier-stokes codes such as these can be used as one of the design tools. Actually, Mitsubishi Heavy Industry is using the code ‘NSFOIL’ developed by the National Aerospace Laboratory,Japan for the design of a transonic airfoil, the detail of which was presented at the AIAA 3rd Applied Aerodynamics Conference with the experimental data.
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