Two-dimensional decaying turbulence in confined geometries  

作　　者：Gabor Toth Gabor Hazi Hungarian Academy of Sciences 

机构地区：[1]Eotvos University,Faculty of Science Department of Physics of Complex System H-1117 Budapest,Pazmany Peter Setany 1/A,Hungary [2]Centre for Energy Research,Budapest H-1525 Konkoly Th.29-33,Hungary

出　　处：《International Journal of Modeling, Simulation, and Scientific Computing》2014年第S01期111-119,共9页建模、仿真和科学计算国际期刊（英文）

摘　　要：Several interesting phenomena have been observed simulating two-dimensional decaying turbulence in bounded domains.In this paper,an overview is given about our observations obtained by simulating freely decaying turbulence in different regular polygon shaped containers with no-slip walls.For these simulations the lattice Boltzmann method has been used as a numerical approach.The initial Reynolds number based on the container dimension was in the order of 10,000.The initial condition was the same in each simulation,therefore,we were able to compare the effect of geometrical constraints on the evolution of relevant physical quantities such as the kinetic energy and the enstrophy.

关 键 词：Lattice Boltzmann method two-dimensional turbulence no-slip walls 

分 类 号：O35[理学—流体力学]