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《Journal of Ballistics》 2005-01
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OVERVIEW OF PARTICLE LOCATING ALGORITHM FOR EULERIAN-LAGRANGIAN COMPUTATIONS OF TWO-PHASE FLOW

Hu Jianxin Xia Zhixun Liu Jun (Inst. of Aerospace and Material Engineering, National University of Defense Technology, Changsha, 410073)  
The numerical simulation of fluid flow by means of Lagrangian techniques typically involves the tracking of the particles within the spatial domain of the problem. The principal output of the algorithms is the identification of the grid cell within which the particles resides at any time during the tracking of its trajectory. This information is required for the solution of the particle-motion equations and for modeling the exchange processes between the particle and surrounding fluid. The present paper reviews three recently published, particle-locating algorithms within arbitrary two-dimensional or three-dimensional grid. The Chen-Pereira algorithm and the R.Chorda algorithm offers shorter search paths during the tracking of the particle trajectory. And the R.Chorda algorithm is faster than the other two algorithms. A detailed numerical simulation of a lateral jet interacting with a hypersonic cross flow was performed using the R.Chorda algorithm.
【CateGory Index】: O359.1
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