The implementation of the numerical analysis for any flow problem required good knowledge of the physical boundary associated with the case to be studied. This knowledge will help to simplifying the numerical analysis in order to solve the problem approximately as a real case. Numerical grid generation has now become a fairly common tool for use in the numerical solution of partial differential equations on arbitrary shaped regions. This is especially true in computational fluid dynamics, from which came much of the impetus for the development of this technique. But the procedures are equally...