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- W3118340588 abstract "The present work investigates the ability of several Reynolds Averaged Navier-Stokes (RANS) turbulence models to predict flow dynamics and mixing of a high-temperature turbulent jet in a cold crossflow. Two turbulence models relying on an isotropic eddy viscosity assumption were tested. They globally capture the main flow features but strongly underestimate turbulent mixing. The Explicit Algebraic Reynolds Stress Model (EARSM) does not bring significant improvement over isotropic RANS models on this configuration. Reynolds Stress Models (RSM) predict a more diffuse jet and are in better agreement with the measurements. Influence of turbulent heat flux modelling is also assessed for RSM and EARSM models. For this purpose, the Generalized Gradient Diffusion Hypothesis (GGDH) is used instead of the classical Gradient Diffusion Hypothesis (GDH). This advanced thermal modelling enhances thermal field prediction creating extra diffusion compared to the latter which involves a constant turbulent Prandtl number." @default.
- W3118340588 created "2021-01-18" @default.
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- W3118340588 date "2021-01-04" @default.
- W3118340588 modified "2023-09-27" @default.
- W3118340588 title "RANS Modelling of a High-Temperature Jet in a Cold Crossflow: from Eddy Viscosity Models to Advanced Anisotropic Approaches" @default.
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- W3118340588 doi "https://doi.org/10.2514/6.2021-1542" @default.
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