多重プロセス型モデルを用いた Clark Y-11.7%翼まわりのキャビテーション流れの解析

抄録

In this study, targeting the cavitating flow around a Clark Y-11.7% hydrofoil, the unsteady RANS simulation using Multi-process model which is a homogeneous model considering the main elementary processes of cavitation bubbles was carried out. Besides, simulations using Singhal’s full cavitation model were also conducted. As a result, there existed no remarkable difference in the time-averaged lift between the two cavitation models; the lift was under-estimated similarly as other homogeneous models. However, the time-averaged pressure distribution on hydrofoil surface computed by Multi-process model showed better qualitative agreement with experiment than Singhal model. This is probably because the unsteady behavior of cavity was simulated quite differently by each cavitation model.