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Application of a Real-Gas-Library Multi-Fluid-Mixing Model to Supercritical Single Injector Flow

Banuti, Daniel und Hannemann, Klaus (2014) Application of a Real-Gas-Library Multi-Fluid-Mixing Model to Supercritical Single Injector Flow. American Institute of Aeronautics and Astronautics. 50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, 2014-07-28 - 2014-07-30, Cleveland, Ohio, USA. doi: 10.2514/6.2014-3791.

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Offizielle URL: http://arc.aiaa.org/doi/pdf/10.2514/6.2014-3791

Kurzfassung

In this paper we report on supercritical single injector computations using a new type of real gas CFD model. This Euler-Euler model is an extension to the DLR TAU CFD code. By storing fluid data in a library, we were able to decouple equation of state (EOS) accuracy from runtime performance. The library covers all fluid states effciently and robust, including gaseous, liquid, supercritical, and multiphase states. In our new multifluid mixing model, an EOS is solved for each species. Computations were carried out using a modifed Benedict-Webb-Rubin high fidelity equation of state for cryogenic oxygen, with negligible penalty in performance compared to a pure ideal gas computation. Additional species (H, H2, O, OH, H2O, H2O2) were treated as perfect gases. The immediate goal is to create a flow solver for industrial application, i.e. to support design by enabling a fast turnaround. Thus, we focus on 2D RANS modeling in this first step. The baseline model is applied to the canonical Mascotte A60 test case. The chamber pressure is well met, the flame dimensions are within the spread found among other CFD results. In accordance with experimental results, the reaction zone is very thin. Maximum OH* occurrences are correctly predicted in the shear layer, reducing in magnitude towards shoulder and flame tip. The fluid library allows to pinpoint the extent of the liquid oxygen core, the length is determined to 20 LOX injector diameters. It is found to be embedded in a gaseous oxygen shell. Within this RANS context, H2 and O2 do not coexist in a premixed form. Finally, we show that numerical OH* concentration differs significantly from OH mass fraction distributions, the latter are thus no appropriate data to compare to experiments.

elib-URL des Eintrags:https://elib.dlr.de/90408/
Dokumentart:Konferenzbeitrag (Vortrag)
Zusätzliche Informationen:DOI: 10.2514/6.2014-3791, eISBN: 978-1-62410-303-2
Titel:Application of a Real-Gas-Library Multi-Fluid-Mixing Model to Supercritical Single Injector Flow
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iD
Banuti, Danieldaniel.banuti (at) dlr.de
Hannemann, Klausklaus.hannemann (at) dlr.de
Datum:2014
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
DOI:10.2514/6.2014-3791
Seitenbereich:Seiten 1-12
Verlag:American Institute of Aeronautics and Astronautics
Name der Reihe:Conference Proceedings online
Status:veröffentlicht
Stichwörter:CFD, real gas, supercritical, injection, EOS
Veranstaltungstitel:50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference
Veranstaltungsort:Cleveland, Ohio, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:28 Juli 2014
Veranstaltungsende:30 Juli 2014
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Raumtransport
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R RP - Raumtransport
DLR - Teilgebiet (Projekt, Vorhaben):R - ProTAU + Prop2020 Hochleistungstriebwerke (alt)
Standort: Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Raumfahrzeuge
Hinterlegt von: Micknaus, Ilka
Hinterlegt am:15 Sep 2014 13:05
Letzte Änderung:24 Apr 2024 19:56

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