摘要
采用间断有限元方法、LS方法和通量装配技术相结合,建立了一种计算可压缩多介质流动的有效方法。计算中以光滑Heavside函数构造流体比热比和重新初始化方程中的符号距离函数,并采用通量装配技术抑制界面附近的非物理振荡。为解决可压缩多介质流动提供一种新的手段。
An effective numerical solver was developed for compressible multi-component fluid flows by combining a level set method for the interface tracking, a Runge-kutta discontinuous finite element method for the discretization of the Euler equations and a simple fix method for preventing spurious oscillations near the interface. In calculation, the specific-heat ratio of the flow and a new sign func- tion were defined by using a smooth Heaviside function. Results show that the developed method is feasible for solving compressible multi-component fluid flows.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2010年第4期419-423,共5页
Explosion and Shock Waves
基金
上海市重点学科建设项目(J50501)
上海市优秀青年基金项目(slg09003)
关键词
流体力学
运动界面
间断有限元方法
多介质流体
LS方法
fluid mechanics
moving interface
discontinuous finite element method
multi-component fluid
LS method
