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六、雷诺方程的差分表达式及求解本文在第一节已建立了流体动压润滑的基本方程,即雷诺方程。它是一个二阶、二维、变系数、非齐次、椭圆型微分方程,直接求解方程在数学上存在困难,不能得到精确解。本文在第四节建立了差分方程,如果将微分方程化成相应的差分方程,即将求解微分方程的问题化为解代数线性联立方程组的问题,在数学上便不存在什么困难了。
Sixth, the differential equation of the Reynolds equation and solving This article has established in the first section hydrodynamic lubrication of the basic equation, that is, the Reynolds equation. It is a second-order, two-dimensional, variable coefficient, nonhomogeneous, elliptic differential equations, solving equations directly in the mathematical difficulties, can not be exact solution. In this paper, we establish a difference equation in the fourth quarter. If the differential equation is transformed into the corresponding difference equation and the problem of solving the differential equation is solved as the problem of solving simultaneous algebraic simultaneous equations, there is no problem in mathematics.