On the Background Integral in a Meshless Method and Simulation of One Particle Dropping

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2006, Vol. 23 ›› Issue (5): 525-529.

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On the Background Integral in a Meshless Method and Simulation of One Particle Dropping

QIU Yi, YOU Chang-fu, QI Hai-ying, XU Xu-chang

Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

Received:2005-04-13 Revised:2005-08-25 Online:2006-09-25 Published:2006-09-25

Abstract

Abstract: In a direct numerical simulation of gas-particle flow with meshless method,if the integral is carried out with common background integral cells numerical pressure fluctuation occurs.It results in unsuccessful computations.We analyze the reason and develope a solution strategy.It is used in the simulation of one particle dropping.Reasonable results are obtained.It shows that the new strategy avoids pressure fluctuation.

Key words: element-free Galerkin, meshless method, fractional step scheme, background integral, arbitrary Lagrangian-Eulerian

CLC Number:

O359

QIU Yi, YOU Chang-fu, QI Hai-ying, XU Xu-chang. On the Background Integral in a Meshless Method and Simulation of One Particle Dropping[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2006, 23(5): 525-529.

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On the Background Integral in a Meshless Method and Simulation of One Particle Dropping

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