分层流中涡对演化特性数值研究

Numerical research of vertex pair evolvement characteristic in stratified fluids

该文采用基于RANS方程及多相流理论的分层流数值模拟方法,以点涡对为数学模型,对水下涡对在诱导速度的作用下向自由面运动演化的情况进行了模拟,并分析了分层流形式及分层密度梯度对旋涡传播演化特性的影响规律。

Stratified fluid is simulated using numerical method based on RANS equation and multi-phase theory. Point vortex is selected as the mathematical model of vertex pair. It is simulated that vertex pair moves toward free surface with the induced velocity. The effect of the form and density gradient of stratified fluids on the vertex evolvement characteristic is analyzed.