Study on evaluation method of sub-surface vortex cavitation

Ito, Kei; Ezure, Toshiki ; Ohno, Shuji  ; Nakamine, Yoshiaki*; Kawamura, Takumi*

In Japan Atomic Energy Agency, an evaluation method for the submerged-vortex cavitation at a pipe intake has been examined as a part of the establishment of the safety design criteria for a sodium-cooled fast reactor. The submerged-vortex cavitation is nonlinear and highly complicated phenomenon, and therefore it is difficult to predict the occurrence condition based on the macroscopic quantities, e.g. the flow rate. In this study, the authors proposes a new evaluation method based on a three-dimensional CFD.