摘要
在对可压多介质流动进行数值模拟时,界面两边流体状态方程不同会给计算带来很大麻烦,该文采用Ghost Fluid方法(GFM)成功地解决了这一问题。利用间断有限元Galerkin方法和Level Set方法,对2种不同比热比介质激波管问题进行了模拟,其数值结果和精确解非常吻合;对气体/水激波管、空气/氦气泡相互作用、空气/R22相互作用等问题进行了模拟,其结果与相关文献的结果一致,表明利用该方法进行可压缩多介质流动数值模拟是可行的。
When the compressible multi-material flows are numerically simulated, much trouble is made from two different state equations. The Ghost Fluid method is used to avoid the problem. The shock tube problem containing two ideal gases with different specific heat ratios is simulated by using discontinuous Galerkin finite element method and Level Set method. The numerical results are in very good agreement with the exact solution. In addition, the gas-water shock tube problem, air interacting with helium bubbles and air interacting with R22 are also simulated. The conclusions are consistent with the relative references. The results show that the method used for compressible muhimaterial flow is feasible.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2007年第2期159-162,共4页
Journal of Nanjing University of Science and Technology
基金
国家自然科学基金(10476011)
