一种改进块修正技术在数值传热中的应用

块修正技术保证边界条件向内点传递信息方面比起ADI方法来无疑是先进的。因此，在许多情况下，比起ADI方法来，其收敛速度更快，更容易得到收敛的数值解。但传统的块修正技术，其在传递边界信息的时候，是一种平均传递，因此，它只能保证块上的未知值的分布发生平行移动，并不能改变相对分布，这正是传统的块修正技术的不足之处。提出一种改进的块修正技术方法，并进行了算例验证，实践证明，这种方法是行之有效的。

A Revised Block-correction Technique

It is no doubt that block - correction technique is more advanced than ADI to transfer boundary points＇ information to inner points. Generally speaking, block - correction technique has more rapid convergent speed and easier way to earn convergent numerical solution. But it is an average way that the traditional block - correction technique transfers boundary points＇ information to inner points. Therefore, block -correction technique only ensures that the inner points＇ correction values change the primitive values in a parallel way but not a relative way, which is the shortcoming of the traditional block - correction technique. According to the fact, a revised block - correction technique is given to overcome the shortage. The new technique proves to be effective.