Experimental Determination of the Sub-grid Scale Scalar Flux in a Non-Reacting Jet-Flow

This work presents an experimental approach to the direct determination of the sub-grid scale scalar flux used in Large Eddy Simulation (LES). Two non-reacting jet-flow configurations were examined, one with the jet temperature similar to the ambient air temperature and one preheated jet. Hence data...

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Published in:Flow, turbulence and combustion turbulence and combustion, 2008-07, Vol.81 (1-2), p.205-219
Main Authors: Löffler, M., Pfadler, S., Beyrau, F., Leipertz, A., Dinkelacker, F., Huai, Y., Sadiki, A.
Format: Article
Language:English
Subjects:
Automotive Engineering
Engineering
Engineering Fluid Dynamics
Engineering Thermodynamics
Fluid- and Aerodynamics
Heat and Mass Transfer
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container_title Flow, turbulence and combustion
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creator Löffler, M.
Pfadler, S.
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description This work presents an experimental approach to the direct determination of the sub-grid scale scalar flux used in Large Eddy Simulation (LES). Two non-reacting jet-flow configurations were examined, one with the jet temperature similar to the ambient air temperature and one preheated jet. Hence data were obtained for varying viscosities. Each case was investigated for two different, high Reynolds numbers of 17,471 and 31,714. For the measurements of mixture fraction and flow velocity field a finest resolution of almost 100 μm was achieved. Thus both the sub-grid scale scalar flux as well as the spatially filtered quantities can be obtained from the same data set. The data were acquired by the simultaneous application of planar laser-induced fluorescence (LIF) and particle image velocimetry (PIV).
doi_str_mv 10.1007/s10494-007-9102-6
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subjects Automotive Engineering
Engineering
Engineering Fluid Dynamics
Engineering Thermodynamics
Fluid- and Aerodynamics
Heat and Mass Transfer
title Experimental Determination of the Sub-grid Scale Scalar Flux in a Non-Reacting Jet-Flow
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