Numerical Prediction for the Bubbly Flow Around a Hydrofoil by Vortex Method

This study is concerned with the numerical simulation for an air-water bubbly flow around a hydrofoil. The two-dimensional vortex method for bubbly flow, proposed by the authors in a prior paper, is applied for the simulation. A hydrofoil of NACA4412 with a chord length 100mm is mounted in an air-water bubbly flow. The Reynolds number is 2.5×10⁵, the bubble diameter is 1 mm, and the volumetric flow ratio of bubble to whole fluid is 0.048. The simulation demonstrates that the two-phase flow features around the hydrofoil are successfully captured and that the vortex method is indeed applicable to the bubbly flow analysis around a hydrofoil.