Numerical Prediction of Laminar-to-Turbulent Transition Around the Prolate Spheroid

Erfan Kadivar , Ebrahim Kadivar , Seyed Morteza Javadpour

Journal of Marine Science and Application ›› 2021, Vol. 20 ›› Issue (1) : 46 -54.

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Journal of Marine Science and Application ›› 2021, Vol. 20 ›› Issue (1) : 46 -54. DOI: 10.1007/s11804-020-00184-w
Research Article

Numerical Prediction of Laminar-to-Turbulent Transition Around the Prolate Spheroid

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Abstract

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 kω, and SST-Trans models are used for numerical simulations. The possibility of laminar-to-turbulent 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.

Keywords

Laminar-to-turbulent transition / Shear stress transport turbulence model / Skin fraction / Three-dimensional ellipsoid

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Erfan Kadivar, Ebrahim Kadivar, Seyed Morteza Javadpour. Numerical Prediction of Laminar-to-Turbulent Transition Around the Prolate Spheroid. Journal of Marine Science and Application, 2021, 20(1): 46-54 DOI:10.1007/s11804-020-00184-w

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