The flow characteristics of geometric component of the gooseneck is changed due to "composite effect", and it follows an original motion law.
鹅颈管的“组合效应”改变了其几何组成部分的水流特性，而遵循其固有的运动规律。
The motion of individual particles is obtained by solving Newtons second law of motion and gas flow by the Navier Stokes equation based on the concept of local average.
颗粒的运动满足牛顿第二定律，流体相的运动规律由局部平均的纳维斯托克斯方程求解，两相间的耦合由牛顿第三定律决定。
It is proved that the motion of the filament - like vortex is governed by a law of curvature flow in 3 dimensions.
证明了在3维情形，线状涡漩的运动服从一个曲率流方程。
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