NUMERICAL SIMULATION OF 2D AND 3D AIRFLOW IN ROOM WITH MULTIGRID METHOD

Abstract

Many kinds of relaxation methods such as SOR are used for numerical simulation of flow field. The convergence of the relaxation solution becomes worse with the increment of number of grid points. Multigrid Method is useful for overcoming this difficulty particular to the calculation with large grid points. In this parer, the Multigrid method is incorporated into the SIMPLE-D method for the numerical simulation of stationary solution. The numerical procedure developed here was applied to the airflow simulations of 2D laminar flow and 3D turbulent flow in a room. The results showed that the calculation speed with Multigrid is several times faster than that without Multigrid.