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块修正技术可以大大加速数值法求解传热传质与流动问题时的收敛速度,双块修正技术使许多问题的收敛速度进一步提高.本文将块修正技术作了一般化推广,推导了多块(任意块数)修正技术的计算公式,研究了修正块数对不同问题收敛速度的影响,并找得了最佳修正块数与所研究问题的性质及网格结点数之间的一般关系.文中还研究了块修正与行TDMA迭代扫描次数之间的相互配合关系,并确定了每次块修正技术之后最佳的行(或列)TDMA迭代扫描次数.
The block correction technique can greatly accelerate the convergence speed of the numerical method for solving the heat and mass transfer and flow problems, and the double block correction technique further improves the convergence speed of many problems.In this paper, the block correction technique is generalized, Arbitrary block number), and studied the influence of the modified block number on the convergence speed of different problems, and found the general relationship between the optimal modified block number and the nature of the problem under study and the number of mesh nodes. The interrelationship between block corrections and the number of TDMA iterations was studied and the best number of row (or column) TDMA iterations was determined after each block correction technique.