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Study of a supersonic reacting wall jet with a variable turbulent Prandtl and Schmidt number approach

Hoste, Jimmy-John and Fechter, Stefan and Karl, Sebastian and Hannemann, Klaus (2020) Study of a supersonic reacting wall jet with a variable turbulent Prandtl and Schmidt number approach. Aerospace Science and Technology, 106 (106070). Elsevier. doi: 10.1016/j.ast.2020.106070. ISSN 1270-9638.

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Official URL: https://doi.org/10.1016/j.ast.2020.106070


Within the context of supersonic combustion modeling in air-breathing propulsion, the turbulent Prandtl and turbulent Schmidt numbers have a profound effect on the resulting predictions. This work considers a Scalar Fluctuation Model (SFM) introducing two extra transport equations in order to specify variable values for turbulent Prandtl and turbulent Schmidt numbers within a Reynolds-Averaged Navier-Stokes (RANS) framework relying on a gradient diffusion hypothesis for both the turbulent heat and mass flux. The SFM is applied in conjunction with a two-equation linear eddy viscosity model. In order to study the effect of the different modeling choices, the supersonic reacting wall jet experiment of Burrows and Kurkov [24] is considered. A strong effect of Turbulence Chemistry Interaction (TCI) through an assumed PDF approach on the SFM is observed and needs to be enabled in order for predictions to be within experimental observation bounds in terms of ignition delay. Overall, the presented SFM methodology could be a viable candidate for supersonic combustion studies.

Item URL in elib:https://elib.dlr.de/138489/
Document Type:Article
Title:Study of a supersonic reacting wall jet with a variable turbulent Prandtl and Schmidt number approach
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Fechter, StefanUNSPECIFIEDhttps://orcid.org/0000-0001-5683-4715UNSPECIFIED
Karl, SebastianUNSPECIFIEDhttps://orcid.org/0000-0002-5558-6673UNSPECIFIED
Hannemann, KlausUNSPECIFIEDhttps://orcid.org/0000-0002-9653-4087UNSPECIFIED
Date:17 July 2020
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
EditorsEmailEditor's ORCID iDORCID Put Code
Keywords:Supersonic combustion
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Wiederverwendbare Raumfahrtsysteme (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Deposited By: Karl, Dr. Sebastian
Deposited On:15 Dec 2020 17:24
Last Modified:23 Oct 2023 13:19

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