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本文针对有限差分问题中的均匀网格技术存在的弊端提出了变网格技术,给出了区分粗、细网格的假设与原则及其在算法上实现的流程图;并把它应用到了温度场数值模拟,导出了粗、细网格在三维场合下基于有限差分的算法;文章最后给出了变网格技术在温度场中应用的实例。
Aiming at the disadvantages of uniform grid technique in finite difference problem, this paper proposes a variable grid technique, gives the hypothesis and principle of distinguishing between coarse and fine grids and the flow chart of its algorithm. It is applied to temperature Field numerical simulation, the algorithm based on finite difference for coarse and fine grid in three-dimensional environment is derived. Finally, an example of the application of variable grid technology in temperature field is given.