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arXiv 1601.07641physics.comp-ph
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一种简单的三维两相流流体体积重构方法

A simple volume-of-fluid reconstruction method for three-dimensional two-phase flows

Akio Kawano

摘要:

提出了一种新的PLIC(分段线性界面计算)型VOF(流体体积)方法,称为APPLIC(近似PLIC)方法。PLIC方法是最精确的VOF方法之一,但三维算法复杂。因此,很难开发和维护计算代码。APPLIC方法使用简单的近似公式降低了复杂性。进行了三个数值试验,以比较SVOF(简化的流体体积),VOF/WLIC(加权线界面计算),THINC/SW(界面捕获/斜率加权双曲线的切线),THINC/WLIC,PLIC和APPLIC方法的准确性。测试结果表明,APPLIC结果与PLIC结果一样准确,并且比SVOF、VOF/WLIC、THINC/SW和THINC/WLIC结果更准确。结果表明,APPLIC方法比PLIC方法计算效率更高。

英文摘要:

A new PLIC (piecewise linear interface calculation)-type VOF (volume of fluid) method, called APPLIC (approximated PLIC) method, is presented. Although the PLIC method is one of the most accurate VOF methods, the three-dimensional algorithm is complex. Accordingly, it is hard to develop and maintain the computational code. The APPLIC method reduces the complexity using simple approximation formulae. Three numerical tests were performed to compare the accuracy of the SVOF (simplified volume of fluid), VOF/WLIC (weighed line interface calculation), THINC/SW (tangent of hyperbola for interface capturing/slope weighting), THINC/WLIC, PLIC, and APPLIC methods. The results of the tests show that the APPLIC results are as accurate as the PLIC results and are more accurate than the SVOF, VOF/WLIC, THINC/SW, and THINC/WLIC results. It was demonstrated that the APPLIC method is more computationally efficient than the PLIC method.

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