椭圆柱体在牛顿流体中运动的格子Boltzmann方法模拟

用格子Boltzmann方法建立了椭圆柱体的二维动力学模型，利用所建立的模型，数值模拟了 牛顿流体中不同形状的椭圆柱体在相同初始条件下的运动和同一椭圆柱体在不同初始条件下 的运动，并通过比较相同条件下圆柱体的运动，讨论了椭圆柱体二维运动的特征，得到了一 些有意义的结果. 关键词： 格子Boltzmann方法 椭圆柱体 牛顿流体

Lattice Boltzmann simulations of moving elliptic cylinder in a Newtonian fluid

A dynamical model, based on the Lattice Boltzmann method, is presented for simul ating the two-dimensional moving elliptic cylinders in a Newtonian fluid. Using this model, we have simulated the motions of elliptic cylinders with different shapes in a Newtonian fluid under the same initial conditions, and the motions o f an elliptic cylinder under different initial conditions. The numerical simulat ions are compared with the results of moving cylinders under the same conditions . The characters of the two-dimensional moving elliptic cylinders are discussed, and some new results are obtained.