一个多介质流体的Baer-Nunziato修正模型及其Lax-Wendroff格式  

A modified Baer-Nunziato model of multifluid flow and its Lax-Wendroff scheme

作　　者：吴强[1,2] M.A.乌拉赫 

机构地区：[1]上海大学数学系,上海200444 [2]合肥工业大学数学学院,安徽合肥230009 [3]吉大港大学数学系

出　　处：《合肥工业大学学报（自然科学版）》2012年第3期417-420,共4页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(10971132);安徽省自然科学基金资助项目(11040606M06)

摘　　要：文章在BN模型基础上,提出了一个描述可压缩多介质流体的介质界面的修正模型,并且给出了该模型的具有二阶精度的Lax-Wendroff格式。无论模型和格式,都保证了总质量和分质量守恒、总动量和总能量守恒。更重要的是它消除了速度和压力在介质界面处的伪振荡,数值算例表明这一算法是有效的。This paper proposes a modified Baer-Nunziato model and its Lax-Wendroff scheme with the second order accuracy for the simulation of material interface of different compressible multifluid flow. Both the model and the scheme fully guarantee the total and individual mass conservation as well as the total momentum and total energy conservation. And the spurious oscillation of velocity and pressure across the material interface is eliminated. Numerical examples verify the effectiveness of the algorithm.

关 键 词：守恒律 多介质流 伪振荡 Lax-Wendroff格式 

分 类 号：O241.82[理学—计算数学]