根据力学中速度分解和合成的原理,转轮中任一点水流质点的绝对速度都可以分解为沿转轮叶片流动的相对速度和随着转轮一起旋转的牵连速度,这三个速度向量构成一个闭合的三角形,一般把这个三角形称为水轮机水流速度三角形。
在设计点附近作了沿叶高效率分布及动叶进、出口速度三角形的测定。
The efficiency distribution along blade span and the inlet and outlet velocity triangle measurement of rotor blades were made around the designing point.
本文首先介绍了风扇的工作原理,包括基元级的速度三角形、叶型和叶栅参数以及叶栅的空气动力学方程。
This paper explains the working principles of a fan, including velocities on an elementary stage, parameters of blade types and cascades and the aerodynamics formulas of cascades.
在测得转轮内部的绝对速度矢量后,按速度三角形原理进行分解,得到了绝对速度切向分量、相对速度及相对速度切向分量。
The absolute velocity was decomposed based on the law of velocity triangle, the absolute tangential velocity, the relative velocity and the relative tangential velocity were presented in this paper.
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