【摘要】 采用格子Boltzmann方法数值模拟正弦曲线底边方腔内流动,分析了格子Boltzmann方法处理曲线边界的特性.在曲线边界的处理中采用二阶精度的曲线边界处理方法,将反弹格式和内插法相结合,计算方法可靠、准确且易于执行.计算了流线图、等涡线图和涡心位置,并分析了流场随Re数的变化.更多还原

【Abstract】 The flow in a cavity with a sinusoidal wavy bottom was simulated numerically by the lattice Boltzmann method.The treatment of the lattice Boltzmann method was investigated.An accurate curved boundary treatment of second-order accuracy was used.This treatment is a combination of the bounceback scheme with interpolation,it is relatively reliable,accurate,and easy to implement.Numerical results of the streamlines,the vorticity contours and the location of the vertical center are given to analyze the variation of the flow pattern for different Reynolds numbers.更多还原