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首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >Analysis of inconsistency of SIMPLE-like algorithms and an entirely consistent update technique - The CUT algorithm
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Analysis of inconsistency of SIMPLE-like algorithms and an entirely consistent update technique - The CUT algorithm

机译：分析类似于SIMPLE的算法的不一致和完全一致的更新技术-CUT算法

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摘要

The inconsistency of the second hypothesis of the SIMPLE-like algorithms is analyzed and a remedy-the Consistent Update Technique (CUT algorithm)-for velocity and pressure is proposed. In the CUT algorithm, at each iterative level the mass conservation condition is satisfied implicitly while the momentum equation is satisfied explicitly. In CUT algorithm, a modified equation for the explicit-velocity is suggested, and an adjustable coefficient is introduced. Four 2-D fluid flow and heat transfer problems are solved numerically by both the CUT and SIMPLER algorithms under the same other conditions. Comparisons of CPU time are made and it is found that for the four examples studied, the CUT can at least reduce CPU time by 15-63% with much better robustness.
机译：分析了类似于SIMPLE的算法的第二个假设的不一致性，并提出了一种针对速度和压力的补救方法-一致性更新技术（CUT算法）。在CUT算法中，在每个迭代级别隐式满足质量守恒条件，而明确地满足动量方程。在CUT算法中，提出了一个修正的显速度方程，并介绍了一个可调系数。在相同的其他条件下，CUT和SIMPLER算法可以数值解决四个二维流体流动和传热问题。比较了CPU时间，发现对于所研究的四个示例，CUT至少可以将CPU时间减少15-63％，并且具有更好的鲁棒性。

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