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DNS of convective channel flow withtemperature and concentration gradients

Bahavar, Philipp and Wagner, Claus (2016) DNS of convective channel flow withtemperature and concentration gradients. STAB 2016, 08.-09. Nov. 2016, Braunschweig, Deutschland.

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Official URL: https://www.tu-braunschweig.de/stab2016

Abstract

Mixed convection in a differentially heated channel with an additional concentration gradient is investigated via direct numerical simulation (DNS) using a finite volume method based on fourth order accurate central differences in space and an explicit time integration scheme. The fluid is treated as a homogeneous fluid characterized by its temperature and mixing ratio, and the Boussinesq approximation is employed to calculate the influence of the buoyant forces resulting from density differences due to both quantities in preparation of future investigations of humid air flows in various ventilation applications. The simulations at different values for the modified Grashof number show a distinct effect of the mixing ratio on the flow and temperature profiles for values approximating the conditions found in humid air.

Item URL in elib:https://elib.dlr.de/107351/
Document Type:Conference or Workshop Item (Speech)
Title:DNS of convective channel flow withtemperature and concentration gradients
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bahavar, PhilippUNSPECIFIEDUNSPECIFIED
Wagner, Clausclaus.wagner (at) dlr.deUNSPECIFIED
Date:2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Direkte Numerische Simulation, Boussinesq-Approximation, Auftrieb, Kanalströmung, Wasserdampf
Event Title:STAB 2016
Event Location:Braunschweig, Deutschland
Event Type:national Conference
Event Dates:08.-09. Nov. 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Bachmann, Barbara
Deposited On:10 Jan 2017 16:13
Last Modified:10 Jan 2017 16:13

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