Calculation of buoyancy-driven 3D cavity flow using a multi-processor system

A multiprocessor system developed for molecular-dynamics calculations is applied to three-dimensional Navier-Stokes problems. An algorithm for calculating a buoyancy-driven laminar/turbulent flow in a three-dimensional cavity is implemented on the processor. Focus is placed on the processor architecture and a database structure required for the implementation of the algorithm. A domain-decomposition technique in which the three-dimensional calculation domain is split into a number of slices is selected. A cavity filled with air is considered; its dimensions are 1m x 1m x 0.1m. The solution is obtained on several grids, and it is shown that the solution on the three finest grids deviate very little for the characteristic numbers, with maximum deviation of about 2 pct.