ABSTRACT
To discretize a computational domain that may be encompassed by boundaries with arbitrarily irregular shapes, a system of body-fi tted grids can be incorporated to describe the geometry. e CTP code utilizes a structured grid system where the grid lines run in orderly curvilinear directions and can be identifi ed by indices in each direction. A body-fi tted grid, or body-conforming grid, as illustrated in Figure 8.1, gives a close representation of the boundary shapes of the fl ow domain under investigation. is grid is called a single-block structured grid. Clearly, the exact boundary shapes is approached, as the mesh size of this grid is continuously refi ned. erefore, it is important to note that for boundaries with strong curvature or discontinuity in boundary slope, more grid points along the boundaries may be needed to predict good solutions of the fl owfi eld. at is, aside from physical model eff ects, keeping smoothness
or minimizing the changes in mesh cell slopes and volumes is a good practice in getting good numerical solutions using the CTP code.
