velocity coordinate system

First, by the composition theorem of acceleration of influence move, strict mechanical analysis and accurate mathematical computations, we have acquired the presentation formula of acceleration of the movable mass of the gyroscope rotating in a constant angular velocity in an inertia coordinate system.

利用牵连运动的加速度合成定理，通过严格的力学分析和严密的数学演算首先得到其活动质量当陀螺仪在惯性坐标系中作定常角速度转动时的加速度表达式。

SIMPLE algorithm with non-staggered gird in the body-fitted curvilinear coordinate system is proposed. The pressure oscillation which can't be tested by continuity equation is prevented by means of a special averaging procedure of contravariant velocity components on control volume faces.

提出了在贴体坐标系中非交错网格的SIMPLE算法，通过对控制界面上的逆变速度分量作特殊加权平均处理，可避免在非交错网格中产生压力波动而连续性方程又无法检测出来的问题。

The Direct Deduction of Velocity and Acceleration of a Particle in Spherical Coordinate System

谈球坐标系中质点运动速度、加速度公式的直接推导

A Mathematical Description of Uniform Velocity Motion and Uniformly Accelerated Motion in Cartesian Coordinate System

质点匀速匀变速直线运动在直角坐标系中的数学描述

The article presents direct deduction of velocity and acceleration of a particle in spherical coordinate system, which helps the teaching of theoretical mechanics.

文章利用球坐标系中单位矢量与直角坐标系中的单位矢量的关系给出了球坐标系中质点运动速度、加速度公式的直接推导。这将对力学、理论力学中有关内容的教学有所帮助。