Block-implicit multigrid calculation of three-dimensional recirculating flows.

An efficient finite difference calculation procedure for three dimensional recirculating flows is presented. The algorithm is based on a coupled solution of the three dimensional momentum and continuity equations in primitive variables by the multigrid technique. A symmetrical coupled Gauss-Siedel technique is used for iterations and is observed to provide good rates of smoothing. Calculations have been made of the fluid motion in a three dimensional cubic cavity with a moving top wall. (from author's abstract)