On the determination of Nusselt number and hydrodynamic coefficients for prolate spheroids in a uniform steady flow
Résumé
In this work, numerical simulations at the particle scale were performed to determine the impact of the Reynolds number , the Prandtl number , the aspect ratio of the particle and the angle of attack on the drag and lift forces, the pitching torque and the convective heat transfer coefficient for prolate spheroids in a steady flow. Validation cases have been studied to assess the accuracy of the present setup including a polyhedral mesh. As a result, new correlations for drag, lift and pitching torque coefficients and Nusselt number have been derived. Compared to existing works, the present correlations are valid for wide range of aspect ratios (1 ≤ E ≤ 10) and Prandtl numbers (0.7 ≤ Pr ≤ 7).
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