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An efficient multi-fluid-mixing model for real gas reacting flows in liquid propellant rocket engines

Banuti, Daniel and Hannemann, Volker and Hannemann, Klaus and Weigand, B. (2016) An efficient multi-fluid-mixing model for real gas reacting flows in liquid propellant rocket engines. Combustion and Flame. Elsevier. ISSN 0010-2180

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Official URL: http://www.sciencedirect.com/science/journal/00102180/168?sdc=1

Abstract

This paper introduces a new model for real gas thermodynamics, with improved accuracy, performance, and robustness compared to state-of-the-art models. It is motivated by the physical insight that in non- premixed flames, as encountered in high pressure liquid propellant rocket engines, mixing takes place chiefly in the hot reaction zone among ideal gases. We developed a new model taking advantage of this: When real fluid behavior only occurs in the cryogenic oxygen stream, this is the only place where a real gas equation of state (EOS) is required. All other species and the thermodynamic mixing can be treated as ideal. Real fluid properties of oxygen are stored in a library; the evaluation of the EOS is moved to a preprocessing step. Thus decoupling the EOS from the runtime performance, the method allows the application of accurate high quality EOS or tabulated data without runtime penalty. It provides fast and robust iteration even near the critical point and in the multiphase coexistence region. The model has been validated and successfully applied to the computation of 0D phase change with heat addition, and a supercritical reactive coaxial LOX/GH 2 single injector.

Item URL in elib:https://elib.dlr.de/114160/
Document Type:Article
Additional Information:Volume 168- selected pp. 1-436 (June 2016) Available online 5 May 2016
Title:An efficient multi-fluid-mixing model for real gas reacting flows in liquid propellant rocket engines
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Banuti, Danieldaniel.banuti (at) dlr.deUNSPECIFIED
Hannemann, Volkervolker.hannemann (at) dlr.deUNSPECIFIED
Hannemann, Klausklaus.hannemann (at) dlr.deUNSPECIFIED
Weigand, B.bernhard.weigand (at) itlr.uni-stuttgart.deUNSPECIFIED
Date:2016
Journal or Publication Title:Combustion and Flame
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Publisher:Elsevier
ISSN:0010-2180
Status:Published
Keywords:Real-fluid, Cryogenic, Injection, Rocket, Injection, Supercritical
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Systemanalyse Raumtransport
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Deposited By: Bachmann, Barbara
Deposited On:18 Sep 2017 15:35
Last Modified:10 Jan 2019 15:46

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