关键词: 转子, 流体, 阻力, 扭矩

Abstract:

Fluid resistance of rotating disc rotor was analysed in turbulence fluid. Boundary layer theory was used in calculating the torque and the power of rotating disc rotor. A testing apparatus was designed to obtain the torque and power data of the rotor in fluid in different rotating speeds. The relation curve among the speed, torque and power was fitted with the method of least square. The results show that the torque has the first power and second power relation with rotating speed, and the power has the first power and second power and third power relation with rotating speed. Some of the factors such as the surface shape were ignored, so the result is smaller than the experimental data, but it can be used as a reference for choosing the motor. Furthermore, by revising the coefficient of frictional resistance, the calculation results are conformed to experimental data.

Key words: rotor, fluid, resistance, torque