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Evaluation of the grid convergence for a rocket combustion chamber with a porous injector

Zhukov, Victor / V. P. and Heinrich, Klaus P. (2019) Evaluation of the grid convergence for a rocket combustion chamber with a porous injector. Acta Astronautica, 158, pp. 438-443. Elsevier. DOI: 10.1016/j.actaastro.2018.08.002 ISSN 0094-5765

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Official URL: http://dx.doi.org/10.1016/j.actaastro.2018.08.002

Abstract

A study of the grid convergence was carried out in order to quantify the mesh impact on simulations of rocket combustion chambers performed using the averaged Navier-Stokes equations. The present work is a continuation of previous studies on simulations of rocket combustion chambers with the porous injector head API-68. Turbulence is modelled by the SST turbulence model; turbulent combustion is modelled using the extended eddy-dissipation model. The grid convergence study is carried out for two injector configurations (one injector in the middle of the injector head and one injector near the sidewall) on five meshes for each configuration. Results of the work show that the dependences of the flame length and wall heat flux on mesh spacing are described well by a parabola. Using the found dependence on mesh spacing, spatial discretization errors have been evaluated. Analysis of the results shows that a reasonable accuracy of modelling can be reached using the current computational fluid dynamic model at a mesh spacing of around 30 µm in the flame area.

Item URL in elib:https://elib.dlr.de/125452/
Document Type:Article
Title:Evaluation of the grid convergence for a rocket combustion chamber with a porous injector
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zhukov, Victor / V. P.victor.zhukov (at) dlr.dehttps://orcid.org/0000-0003-0110-7419
Heinrich, Klaus P.klaus.heinrich (at) dlr.deUNSPECIFIED
Date:2019
Journal or Publication Title:Acta Astronautica
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:158
DOI :10.1016/j.actaastro.2018.08.002
Page Range:pp. 438-443
Publisher:Elsevier
ISSN:0094-5765
Status:Published
Keywords:Computational fluid dynamics, Grid convergence, Porous injector, Liquid rocket engine, Cryogenic fuels
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 - Wiederverwendbare Raumfahrtsysteme und Antriebstechnologie
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Deposited By: Zhukov, Dr Victor / V. P.
Deposited On:29 Mar 2019 09:12
Last Modified:08 Jul 2019 11:34

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