Rochhausen, Stefan (2012) Reformulation of a two-equation model for the turbulent heat transfer. Turbulence, Heat and Mass Transfer 7, Palermo, Italien.
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Abstract
In this paper a model for the turbulent heat transport is developed. The model is based on equations proposed by Nagano and reformulated by the introduction of a specific dissipation rate. Closure coefficients for destruction source terms are derived by assuming a constant time-scale ratio for thermal and velocity fluctuations in homogenous decaying turbulence. Production modelling constants are calibrated in the thermal mixing layer and flat plate viscous boundary layer. The introduction of a specific dissipation rate makes the use of a wall damping function unnecessary. This is advantageous in separated flows. Simulation results of the backward facing step show a more accurate prediction of heat transfer coefficient compared to constant turbulent Prandtl number calculation. The model has been calibrated and applied with the Menter-SST model .
Item URL in elib: | https://elib.dlr.de/81002/ | ||||||
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Document Type: | Conference or Workshop Item (Paper) | ||||||
Title: | Reformulation of a two-equation model for the turbulent heat transfer | ||||||
Authors: |
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Date: | 1 September 2012 | ||||||
Refereed publication: | Yes | ||||||
Open Access: | No | ||||||
Gold Open Access: | No | ||||||
In SCOPUS: | No | ||||||
In ISI Web of Science: | No | ||||||
Status: | Published | ||||||
Keywords: | turbulent heat transfer, two-equation turbulence modelling | ||||||
Event Title: | Turbulence, Heat and Mass Transfer 7 | ||||||
Event Location: | Palermo, Italien | ||||||
Event Type: | international Conference | ||||||
HGF - Research field: | Energy | ||||||
HGF - Program: | Efficient Energy Conversion and Use (old) | ||||||
HGF - Program Themes: | Power Plants (old) | ||||||
DLR - Research area: | Energy | ||||||
DLR - Program: | E VG - Combustion and Gas Turbine Technologies | ||||||
DLR - Research theme (Project): | E - Gasturbine (old) | ||||||
Location: | Köln-Porz | ||||||
Institutes and Institutions: | Institute of Propulsion Technology > Numerical Methodes | ||||||
Deposited By: | Rochhausen, Stefan | ||||||
Deposited On: | 05 Feb 2013 09:13 | ||||||
Last Modified: | 12 Dec 2013 21:59 |
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