Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 12, 2022 - November 13, 2022
The large flow separation in a steam control valve is a problematic phenomenon because it causes unstable conditions such as oscillation and the noise. However, there are many challenges in predicting flow separation by CFD simulation, and it is difficult to estimate the conditions under which unstable behavior occurs. Therefore, the unsteady simulation using the correction function which works to correct the turbulence source term in the separated region was performed in this research. Also, the air test using the quasi-3D model of the steam control valve was conducted in order to quantitatively evaluate the CFD simulation result. As a result, the simulation result shows the good agreement with the test result about the oil flow and the pressure amplitude. It was suggested the simulation method using the correction function is effective for the prediction of the flow separation.
