A numerical investigation of the temperature field in a turbulent flume is presented. We consider the effect of the Prandtl number on the convection velocity of temperature fluctuations in a turbulent boundary layer, and focus also on the effect of the Prandtl number on the connection between the velocity and the temperature fluctuations. Close to the wall, convection velocities of the temperature fluctuations decrease with an increase in the Prandtl number, i.e., the scale dependence becomes significantly important. In the region the relation of the convection velocity of the temperature fluctuation to that of the velocity fluctuation may be expressed as and for isothermal and isoflux wall boundary condition, respectively.
Convection Velocity of Temperature Fluctuations in a Turbulent Flume
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division October 28, 2003; revision received June 30, 2004. Associate Editor: S. P. Vanka.
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Hetsroni , G., Tiselj and , I., Bergant , R., Mosyak and , A., and Pogrebnyak , E. (November 16, 2004). "Convection Velocity of Temperature Fluctuations in a Turbulent Flume ." ASME. J. Heat Transfer. October 2004; 126(5): 843–848. https://doi.org/10.1115/1.1797032
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