To provide a method for predicting and evaluating behavior stability of cavitation at lower cost based on a calculation result by steady CFD focusing on an unstable phenomenon of the cavitation behavior such as rotating cavitation generated in a pump inlet at pressure drop without using unsteady CFD requiring large temporal cost and calculation cost when optimally designing an inducer or impeller having a plurality of blades with the same shape used for a pump, etc.
The method is for predicting and evaluating the behavior stability of cavitation of the inducer or the impeller having the plurality of blades with the same shape. In the method, a flow field to be predicted and evaluated is analyzed by CFD (Computational Fluid Dynamics), pressure distribution in a specific direction of a blade surface of each blade is extracted, and a characteristic position of a pressure distribution shape of the pressure distribution of each blade is specified, so that each positional variation is set as an index indicating the behavior stability of the cavitation.
| JP2001329856A | 2001-11-30 | |||
| JP2008280932A | 2008-11-20 | |||
| JP2001329856A | 2001-11-30 |
Ryoji Kosugi
Tetsuya Hirosawa