直角坐标中用有限容积法、同位网格上计算二维对流-扩散方程的程序及其后处理程序，对流项采用迎风格式，扩散项采用中心差分，可选用三种求解方式，包括x或y方向的线迭代和不完全LU分解。-This package contains several computer codes for solving

two-dimensional heat and fluid flow problems using Cartesian

grids. The upwind or central differences is applied for convective fluxes and central differences is applied for diffusive fluxes，three solvers are used　including line-by-line TDMA along　　　　　　 X or Y direction, or ILU solver after Stone.