Abstract
This paper reveals the way to compute air flow disiribution in a room, of which space is connected with outdoor and/or other room spaces through clearances, ducts or opennings, etc.. This computational method originates from the MAC method, or in more general, the difference method with the same code as MAC method. The thinking way of MAC method can be adopted for such cases naturally and easily, and a simultaneous nonlinear equation concerning pressure can be obtained through the equation of continuity. This equation has some features facilitating the solution. Using nonlinear SOR methods to solve this equation was considered and examined. As a result, the authors found that a special caution is needed for the accuracy (the accuracy of the Computed Value of SOR method) in the numerical solution of the nonlinear equation at the boundary cell connected with other space. For the future computation, the convergence of four nonlinear SOR methods were tested numerically. A simple two-dimensional program, computing the above air flow and evaluating the distrubution of the thermal comfort index and thermal load, was also accomplished and executed by the authors. It appears that three-dimensional computation may be possible also.
