NDLI: Reynolds Number Effects on Statistics and Structure of an Isothermal Reacting Turbulent Wall-Jet

Content Provider	Springer Nature Link
Author	Pouransari, Zeinab Vervisch, Luc Johansson, Arne V.
Copyright Year	2014
Abstract	Three-dimensional direct numerical simulation (DNS) is used to investigate the effects of changing the Reynolds number on dynamics of a reacting turbulent wall-jet. The flow is compressible and a single-step isothermal global reaction is considered. At the inlet, fuel and oxidizer enter the domain separately in a non-premixed manner. In this study, the bulk Reynolds number of the flow, in terms of the inlet quantities, varies from Re = 2000 to Re = 6000, which results in a comparable change in friction Reynolds numbers. The DNS database in Pouransari et al. (Phys. Fluids 23(085104), 2011) is used for the lower Reynolds number case and for the higher Reynolds number case, a new DNS is performed. One of the main objectives of this study is to compare the influences of changing the Reynolds number of the isothermal flow with the heat-release effects caused by the chemical reaction, that we studied earlier in Pouransari et al. (Int. J. Heat Fluid Flows 40, 65–80, 2013). While, both turbulent and flame structures become finer at the higher Reynolds number, the effect of decreasing the Reynolds number and adding the combustion heat release are compared with each other and found to be similar for some aspects of the flow, but are not always the same.
Starting Page	931
Ending Page	945
Page Count	15
File Format	PDF
ISSN	13866184
Journal	Flow, Turbulence and Combustion
Volume Number	92
Issue Number	4
e-ISSN	15731987
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-04-24
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Reynolds number effects Turbulent Combustion Mixing scales Wall-jet Engineering Fluid Dynamics Fluid- and Aerodynamics Engineering Thermodynamics, Heat and Mass Transfer Automotive Engineering
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Physical and Theoretical Chemistry Chemical Engineering

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