turbulent Prandtl number


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turbulent Prandtl number

[′tər·byə·lənt ′pränt·əl ‚nəm·bər]
(physics)
A dimensionless number used in the study of heat transfer in turbulent flow, equal to the ratio of the eddy viscosity to the eddy thermal diffusivity. Symbolized PrT .
References in periodicals archive ?
Respectively, where [mu]t is the turbulent molecular viscosity, [sigma]t is the constant of turbulent prandtl number and [rho][gamma] is the prandtl number nanofluids.
The simple first order central difference version of the energy equation is expressed as the local product of the Reynolds number and the turbulent Prandtl number (RePr = Peclet number) using the effective viscosity of the central node:
The turbulent Prandtl number has a secondary effect to this, so it was varied with the low [y.
In this paper, turbulent flow computations have been made using the low-Reynolds number k - [epsilon] turbulence model proposed by Launder-Sharma [11] with turbulent heat transfer represented using a turbulent Prandtl number, [Pr.
In addition, they concluded that the predictive ability of the k-[epsilon] models is expected to improve when turbulent Prandtl number variations near the wall are included.
There is an influence of the wall distance on the value of the turbulent Prandtl number which tends to increase Pr, close to the wall (Weigand et al.
The water film Reynolds number related to the film thickness markedly exerted an influence on the eddy viscosity and the turbulent Prandtl number of the water film.
where [alpha] is the inverse turbulent Prandtl number.