Effect of turbulence model, turbulence length scale and wall roughness on the laminar-turbulence transition and temperature distribution of a convectively cooled C3X turbine vane

• Autorzy: Banaś K. , Badur J.
• Języki publikacji: EN

Abstrakty

EN

Our paper demonstrates the ability of Favre-averaged Navier–Stokes (FANS) turbulence models to predict the laminar-turbulent transition and shows the influence of the models on the wall temperature distribution. The investigations were based on conjugate heat transfer analyses of a convectively cooled C3X turbine vane, which were performed using commercial flow simulation software. We compared several eddy-viscosity models: shear stress transport (SST), γ-Reθ SSTtransition, v2-f, k-ε, realizable, k-kl-ω transition, and second-order closure ε-based Reynolds stress model (RSM) with a linear pressure-strain model. The turbulence length scale (TLS) was not measured during the experiment, so its influence on the location of the transition onset and wall temperature distribution is presented. We also examined the influence of the roughness of the airfoil wall on the location of turbulence initialization and the wall temperature distribution.

Słowa kluczowe

EN

laminar-turbulent transition; conjugate heat transfer analysis of turbine; C3X turbine vane; roughness correction

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN
• Czasopismo: Transactions of the Institute of Fluid-Flow Machinery
• Rocznik: 2017
• Tom: nr 138
• Strony: 13--32
• Opis fizyczny: Bibliogr. 32 poz., rys., tab.

Twórcy

autor

Banaś K.

• Department of Energy Conversion Institute of Fluid Flow Machinery, Polish Academy of Sciences 80-231 Gdansk, Fiszera 14, Poland

autor

Badur J.

• Department of Energy Conversion Institute of Fluid Flow Machinery, Polish Academy of Sciences 80-231 Gdansk, Fiszera 14, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).