The average sedimentary velocity under no-slip wall condition is largely less than that under periodic wall boundary condition.

固壁条件下多根椭圆粒子的平均沉降速度大大小于周期性壁面条件下的平均沉降速度。

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In the paper, the steady NS equation was solved to simulate aircraft roll by adding tangent velocity to no slip wall boundary condition.

文中在物面无滑移边界条件的基础上施加物面绕体轴的切向速度，通过求解定常ns方程对飞行器滚转进行模拟。

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Influence of wall boundary condition on plume impingement effects is finally studied by applying various gas - (surface) interaction modeling.

通过选择不同的气体分子与壁面相互作用模型研究了壁面边界条件对羽流撞击效应的影响。

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