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Scaling of turbulent mixed convection under high pressure

Westhoff, Andreas and Grabinski, Nina and Bosbach, Johannes and Wagner, Claus and Thess, Andre (2007) Scaling of turbulent mixed convection under high pressure. In: Turbulence and Shear Flow Phenomena TSFP-5. Turbulence and Shear Flow Phenomena TSFP-5, 2007-08-27 - 2007-08-29, München.

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Official URL: http://www.aer.mw.tum.de/TSFP5


Measurement of turbulent mixed convection at reduced model size by aerodynamic scaling is a promising approach to simplify the investigation of many technical configurations and offers the potential to make large scale flows accessible on a laboratory scale. First results of an experimental study of turbulent mixed convection in a generic convection cell at ambient and high pressure are reported. The aim of these measurements is to prove the possibility of scaling mixed convection by varying pressure and inflow velocity. We present and discuss results for mixed and forced convection obtained with air as working fluid at ambient pressure with Gr = 3.52*10<sup>6</sup>, Re = 1.1*10<sup>3</sup> and thus Ar = 1.81 and at 10 bar with Gr = 3.51*10<sup>8</sup>, Re = 1.1*10<sup>4</sup> and thus Ar = 1.83. The scaling theory, which allows to scale the cell, is presented as well as the PIV set up used for measurement at high pressure conditions in the high pressure wind tunnel in Göttingen (HDG) and the cell.

Item URL in elib:https://elib.dlr.de/44782/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Scaling of turbulent mixed convection under high pressure
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Thess, AndreTU IlmenauUNSPECIFIED
Date:15 May 2007
Journal or Publication Title:Turbulence and Shear Flow Phenomena TSFP-5
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:mixed convection, scaling theory, particle image velocimetry
Event Title:Turbulence and Shear Flow Phenomena TSFP-5
Event Location:München
Event Type:international Conference
Event Dates:2007-08-27 - 2007-08-29
Organizer:TU München
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Bosbach, Dr.rer.nat. Johannes
Deposited On:29 Jul 2008
Last Modified:14 Jan 2010 23:22

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