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Highly Resolved Simulations of Turbulent Mixed Convection in a Vertical Plane Channel

Kath, Christian and Wagner, Claus (2014) Highly Resolved Simulations of Turbulent Mixed Convection in a Vertical Plane Channel. 19. DGLR-Fachsymposium der STAB, 04. - 05. Nov. 2014, München, Deutschland.

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Official URL: http://www.stab2014.tum.de/

Abstract

We performed Large Eddy Simulation (LES) and Direct Numerical Simulations (DNS) of turbulent mixed convection in a vertical plane channel. LES of turbulent mixed convection have been conducted with an open source finite volume method code using second order discretization in space, implicit time integration and the PISO method for the pressurevelocity coupling. The objective was to analyse the performace of this code and to advance it for reliable DNS and LES. Since the agreement of the LES results to data in the literature was poor, we performed additional DNS to identify possible errors source in the used algorithms and the discretization scheme. It turned out that applying an explicit Leapfrog time integration scheme together with a projection method for the velocitypressure coupling and a fourth order accurate discretization considerably improves the results of the DNS. Thus, in the future this combination will be also used for LES.

Item URL in elib:https://elib.dlr.de/92710/
Document Type:Conference or Workshop Item (Speech)
Title:Highly Resolved Simulations of Turbulent Mixed Convection in a Vertical Plane Channel
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kath, Christianchristian.kath (at) dlr.deUNSPECIFIED
Wagner, Clausclaus.wagner (at) dlr.deUNSPECIFIED
Date:2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 136-137
Series Name:Jahresbericht 2014
Status:Published
Keywords:Direct Numerical Simulation, Large Eddy Simulation, turbulent mixed convection, vertical plane channel, Leapfrog, projection method
Event Title:19. DGLR-Fachsymposium der STAB
Event Location:München, Deutschland
Event Type:national Conference
Event Dates:04. - 05. Nov. 2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Next Generation Train III (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Micknaus, Ilka
Deposited On:05 Dec 2014 13:08
Last Modified:05 Dec 2014 13:08

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