【摘要】：波速估計(jì)對(duì)HLLC方法的計(jì)算影響較大,如果取值過(guò)小,則不能抓住波系特征;如果取值過(guò)大,則會(huì)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(jì)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(jì)方法進(jìn)行比較,針對(duì)幾類(lèi)典型的B-N模型初值問(wèn)題,不同的波速估計(jì)方法模擬能力差異較大,而本文方法可以自動(dòng)確定適當(dāng)?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(jì)算數(shù)學(xué)研究所;
【基金】：國(guó)家自然科學(xué)基金(91130021;11372052;11371069)資助項(xiàng)目
【分類(lèi)號(hào)】：O359
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本文編號(hào)：2444071