采用直接模拟方法,研究气泡在浮力作用下的变形机理及气泡尾部驻涡形成机理.用二阶时空精度的变密度投影方法解Navier-Stokes方程,用VOF(volume of fluid)方法捕捉界面.获得了气泡平衡时的上升速度,并探讨气泡内部环流和气泡尾部驻涡间的关系.
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