ABSTRACT

This chapter explains how to utilize symmetry that is inherent in many simulation problems to reduce the computational time. It implements symmetric and periodic boundaries in the three-dimensional code and develops two two-dimensional versions. The first version considers a planar domain in which we simulate an infinitely long cylinder. In the second version, we model the flow past a sphere using the axisymmetric formulation. The chapter also discusses the appropriate changes that need to be implemented in axisymmetric codes to account for the radial variation in cell volumes.