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Analysis of turbulent scalar flux models for a discrete hole film cooling flow

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Academic year: 2021

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Fig. 2. CONTOURS OF ν t,LES /(U b D) , α t,LES /(U b D) , AND Pr t,LES IN STREAMWISE SLICES SPACED 4 D APART
Fig. 3. CONTOURS OF φ , THE ANGLE BETWEEN THE TURBULENT SCALAR FLUXES PREDICTED USING ALGEBRAIC CLOSURES AND THE LES TURBULENT SCALAR FLUXES
Figure 4 shows contours of θ as calculated using RANS and LES. None of the RANS cases exactly match the LES results, particularly in the near wall region, where all of the RANS results over-estimate θ near the centerline
Fig. 4. CONTOURS OF θ IN STREAMWISE SLICES SPACED 4D APART FROM LES AND RANS. ISOSURFACE OF θ = 0.01 SHOWN FOR REFERENCE IN BLUE.
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