计算过程中采用二阶迎风格式离散控制方程。
Governing equations were discrete with two order upstream scheme.
用有限体积法离散控制方程，用块隐式法求解离散后的代数方程组。
The governing partial differential equations were discretized by finite volumes and the nonlinear algebraic equations were solved by a block implicit algorithm.
本文以使用最为广泛的黑油模型为基础，推导了在PEBI网格下的离散控制方程。
In this paper, the controlling equations are discretized according to the PEBI grid on the basis of Block Oil model, which is the most popular model at present.
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