摘要
针对传统的level-set方法在处理界面问题时守恒性差的缺点,提出了一种耦合level-set方法和VOF方法的算法(CLSVOF)。不仅保持了level-set界面光滑性好的特点,还结合了VOF高守恒性的优点。Level-set方程的求解采用五阶WENO格式,而VOF的体积分数输运方程采用Gueyffier的界面重构方法求解。三维数值计算结果表明这种耦合算法对level-set的守恒性有明显的改善。
In this paper, we proposed a coupled level- set and VOF （ Volume of Fluid） method （ CLS- VOF） to overcome the weakness of mass loss in traditional level- set method. This algorithm preserves good characteristic of the smooth on interface in level- set method as well as the high conservation proper- ty in VOF approach. A 5th order WENO （Weighted Essentially Non- Oscillatory） was employed to dis- cretize the spacial term,while Gueyffier＇s interface construction method was used for the VOF transport e- quation. Test cases in 3D have shown the algorithm in this paper made an obvious improvement in the conservation property of level- set method.
出处
《航空计算技术》
2012年第4期14-19,共6页
Aeronautical Computing Technique
基金
国家自然科学基金项目资助(11002159)
国防科技大学科研计划项目资助(JC10-01-02)
