發(fā)布時間：2019-03-20 09:17

【摘要】：波速估計對HLLC方法的計算影響較大,如果取值過小,則不能抓住波系特征;如果取值過大,則會引入較大的粘性。如何確定波速已有大量的研究,但是每種方法都有一定的適用范圍。本文提出一種可避免估計波速的HLLC方法,并應(yīng)用于兩相流Baer-Nunziato模型模擬。本文方法與三種經(jīng)典的波速估計方法進行比較,針對幾類典型的B-N模型初值問題,不同的波速估計方法模擬能力差異較大,而本文方法可以自動確定適當?shù)牟ㄋ?因此得到較好的模擬結(jié)果。
[Abstract]:The wave velocity estimation has a great influence on the calculation of the HLLC method. If the value is too small, the wave system can not be grasped; if the value is too large, a large viscosity is introduced. How to determine the wave velocity has a great deal of research, but each method has a certain range of application. This paper presents an HLLC method which can avoid the estimation of wave velocity, and it is applied to the two-phase flow Baer-Nunzito model. The method of this paper is compared with the three classical wave velocity estimation methods, and the simulation ability of different wave velocity estimation methods is relatively large for several typical B-N models, and the method can automatically determine the appropriate wave velocity, so the better simulation results can be obtained.
【作者單位】： 北京應(yīng)用物理與計算數(shù)學研究所;
【基金】：國家自然科學基金(91130021;11372052;11371069)資助項目
【分類號】：O359
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本文編號：2444071