The laminar–turbulence transition phenomenon widely exists on the surface of many energy equipment, which is deserved to be studied because of the complex mechanics and some induced undesirable consequences. The goal of present work is to investigate the transitional flows around the forward and reversed hydrofoils at different incidences using the SST $\gamma$-${\widetilde{Re}}_{\theta t}$ transition model, with special emphasis on the dynamics of the transition. The effect of inflow turbulence condition is considered initially. Then, the difference between the original SST k-$\omega$ model and SST $\gamma$-${\widetilde{Re}}_{\theta t}$ transition model is analyzed, in terms of the near-wall velocity profiles and flow morphology. Afterwards, the change of the transition with the incidence for the reversed hydrofoil is clarified in detail. The primary results show that the flow separation near the sharp leading edge where the reverse dynamic vortex (RDV) appears makes the contribution to the transition. The size of RDV is much larger than laminar separation bubble (LSB) over the forward hydrofoil and it forms near the leading edge earlier. Moreover, the transition locations are mapped both for the forward and reversed hydrofoils. Finally, the effect of Reynolds number on the transition process for the reversed hydrofoil is presented. It is believed that this work can deep the understandings of the transition, especially for the reversed hydrofoils.

层流湍流过渡现象广泛存在于许多能源设备的表面，由于其复杂的力学和一些诱发的不良后果，值得研究。当前工作的目标是使用SST研究不同发生率的正向和反向水翼周围的过渡流$\gamma$--${\stackrel{〜}{\mathrm{[R}Ë}}_{\theta Ť}$过渡模型，特别强调过渡的动力。首先考虑流入湍流条件的影响。然后，原SST之间的差异ķ -$\omega$ 型号和SST $\gamma$--${\stackrel{〜}{\mathrm{[R}Ë}}_{\theta Ť}$根据近壁速度剖面和流动形态分析了过渡模型。然后，详细阐明了反向水翼的过渡随入射角的变化。主要结果表明，在靠近反向动力学涡流（RDV）的尖锐前沿附近的流动分离为过渡做出了贡献。RDV的大小比正向水翼上的层状分离气泡（LSB）大得多，并且它较早形成在前缘附近。而且，过渡位置被映射为正向和反向水翼。最后，提出了雷诺数对反向水翼的过渡过程的影响。相信这项工作可以加深对过渡的理解，特别是对于反向水翼。