| 改进的HLLC方法及其在Baer-Nunziato模型中的应用 |
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| 引用本文： | 李征,王双虎.改进的HLLC方法及其在Baer-Nunziato模型中的应用[J].计算力学学报,2016,33(5):738-746,752. |
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| 作者姓名： | 李征 王双虎 |
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| 作者单位： | 北京应用物理与计算数学研究所,北京,100094 |
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| 基金项目： | 国家自然科学基金（91130021，11372052，11371069）资助项目. |
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| 摘 要： | 波速估计对HLLC方法的计算影响较大,如果取值过小,则不能抓住波系特征;如果取值过大,则会引入较大的粘性。如何确定波速已有大量的研究,但是每种方法都有一定的适用范围。本文提出一种可避免估计波速的HLLC方法,并应用于两相流Baer-Nunziato模型模拟。本文方法与三种经典的波速估计方法进行比较,针对几类典型的B-N模型初值问题,不同的波速估计方法模拟能力差异较大,而本文方法可以自动确定适当的波速,因此得到较好的模拟结果。
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| 关 键 词： | 可压缩 多相流 Baer-Nunziato模型 HLLC方法 波速 |
| 收稿时间： | 2015/3/10 0:00:00 |
| 修稿时间： | 2015/8/27 0:00:00 |
A modified HLLC method and its application in Baer-Nunziato model |
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| LI Zheng,WANG Shuang-hu.A modified HLLC method and its application in Baer-Nunziato model[J].Chinese Journal of Computational Mechanics,2016,33(5):738-746,752. |
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| Authors: | LI Zheng WANG Shuang-hu |
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| Institution: | Institute of Applied Physics and Computaional Mathematics, Beijing 100094, China;Institute of Applied Physics and Computaional Mathematics, Beijing 100094, China |
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| Abstract: | Wave-speed is very important for HLLC method.If the wave-speed is too small,the wave characters can not be catched;if it is too large,there would be more viscosity in the calculation.There are a lot of methods be caught to determine the wave-speed,but every method has its applicability.This paper presents a modified HLLC method without estimating wave-speed,and it is applied to simulate the Baer-Nunziato model.It is compared with three classic wave-speed estimating methods.Numerical results show that the new method is better than others. |
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| Keywords: | compressible multi-phase flow Baer-Nunziato mdoel HLLC method wave-speed |
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