On the Efficient Use of Large Data Bases in the Numerical Solution of the Navier-Stokes Equations on a CRAY Computer

For the numerical integration of the Navier-Stokes equations with the explicit-implicit MacCormack algorithm the efficient use of a CRAY-1S computer is described, if the main memory is too small to handle the tackled problem. The plane concept is used for the transfer of data. Within each plane of data the code is nearly completely vectorized. To be really efficient dedicated input/output devices are needed. Parallel input/output streams are used to speed up the transfer rates. The set up of the code allows to handle large problems, provided sufficient memory is available in core, and if dedicated input/output devices are employed. The code is not well suited for efficient use on a CYBER vector computer because the vector strings are comparatively short.