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In this research article, we present the formulation and implementation of various correlation-based transition models within the framework of an in-house CFD solver, NSMB. The models considered include the zero-equation BCM (Bas-Cakmakcioglu with Modifications) model, the one-equation \(\gamma \) model, and the two-equation \(\gamma \) -Re \(_{\theta }\) model, which are coupled with the Spalart-Allmaras and k- \(\omega \) -SST models. The validation of these models was initially evaluated using the zero pressure gradient flat plate T3A test case, where the turbulence intensity was calibrated for each model. The models were then applied to external aerodynamic low-Reynolds test cases Eppler387 and S809 airfoils, resulting in promising predictions of the aerodynamic lift and drag forces when compared to the fully turbulent approach.

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A Comparative Study of Correlation-Based Transition Models for Aerodynamics in CFD Code NSMB

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  • 发表日期：

    2025年

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  • Abderahmane Marouf,
  • Marianna Braza,
  • Yannick Hoarau

摘要

In this research article, we present the formulation and implementation of various correlation-based transition models within the framework of an in-house CFD solver, NSMB. The models considered include the zero-equation BCM (Bas-Cakmakcioglu with Modifications) model, the one-equation \(\gamma \) model, and the two-equation \(\gamma \) -Re \(_{\theta }\) model, which are coupled with the Spalart-Allmaras and k- \(\omega \) -SST models. The validation of these models was initially evaluated using the zero pressure gradient flat plate T3A test case, where the turbulence intensity was calibrated for each model. The models were then applied to external aerodynamic low-Reynolds test cases Eppler387 and S809 airfoils, resulting in promising predictions of the aerodynamic lift and drag forces when compared to the fully turbulent approach.