【摘要】 用基元有限容积方法,在非结构化网格中离散和求解热传导方程,二阶迎风格式和全程隐式迭代求解稳态导热问题.在验证求解方法的算例中,结构化和非结构化网格同时采用,并且提供了3种非结构化网格(三角形网格、四边形网格和混合网格)的计算结果,同时用精确解与得到的数值解相比较.虽然两种网格形式都能得到满意的精确度结果,但对于非正交的非结构化网格,二次扩散项对提高精度是十分重要的.更多还原

【Abstract】 Conduction heat transfer problems are solved with a cell-based finite volume method(FVM).The second upwind scheme and whole processing implicit iteration way are used.The solutions are obtained by using structured grids and unstructured grids that include three kinds of meshes(triangular,quadrilateral and hybrid).Some results are compared with the exact solutions.Although both structured and unstructured meshes produce accurate solutions,structured grid solutions are more accurate than the triangular unstructured grid and are the same accurate as similar quadrilateral unstructured grid in rectangular region.更多还原