长椭球体绕流问题中层流向湍流流动状态转变的数值预测（英文）

作者：Erfan Kadivar; Ebrahim Kadivar^*; Seyed Morteza Javadpour

来源：Journal of Marine Science and Application, 2021, 20(01): 46-54.

In this work, the laminar-to-turbulent transition phenomenon around the two-and three-dimensional ellipsoid at different Reynolds numbers is numerically investigated. In the present paper, Reynolds Averaged Navier Stokes(RANS) equations with the Spalart-Allmaras, SST k-ω, and SST-Trans models are used for numerical simulations. The possibility of laminar-toturbulent boundary layer transition is summarized in phase diagrams in terms of skin friction coefficient and Reynolds number.The numerical results show that SST-Trans method can detect different aspects of flow such as adverse pressure gradient and laminar-to-turbulent transition onset. Our numerical results indicate that the laminar-to-turbulent transition location on the 6:1 prolate spheroid is in a good agreement with the experimental data at high Reynolds numbers.