Blockage Ratio and Mesh Dependency Study for Lattice Boltzmann Flow around Cylinder

Alam, M. S.; Liang Cheng
May 2010
AIP Conference Proceedings;5/21/2010, Vol. 1233 Issue 1, p1453
Conference Proceeding
A blockage ratio and mesh dependency study is carried out for the lattice Boltzmann flow around isolated square cylinder. The study of blockage ratio is carried out in order to reveal the effects of lateral boundary location on the global and local parameters at different Reynolds numbers. It is seen that the effects on parameters are prominent for the simulation of flow at the Reynolds number 100. On the other hand, the effects are still distinct but less pronounced when calculations are carried out at the Reynolds number 1000. The variations of flow parameters depending on the location of lateral boundary is discussed and tabulated in detail. Finally, a standard domain configuration is proposed which is able to predict vortex shedding phenomena with considerable accuracy.


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