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Flow Separation Study in Stiff Ovalized Rocket Nozzles, Part II: Numerical Approach

Jack, Sebastian and Génin, Chloé (2015) Flow Separation Study in Stiff Ovalized Rocket Nozzles, Part II: Numerical Approach. In: 51st AIAA/SAE/ASEE Joint Propulsion Conference. 51st AIAA/SAE/ASEE Joint Propulsion Conference, 27.-29. Jul. 2015, Orlando, USA. DOI: 10.2514/6.2015-4154

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Abstract

During the transient startup and shutdown process of a rocket engine high side loads occur, due to unsymmetrical flow patterns. The resulting deformation, and its retroactive effect onto the internal flow, excite the nozzle structure and can lead to its fatal damage. Flow separation at the nozzle wall amplifies the deformation. To investigate and predict the effects as well as the underlying mechanism that cause these phenomena, the flow characteristics in ovalized nozzles are investigated in the DLR project ProTAU. In this paper CFD results of ovalized TIC nozzles are presented and compared to experimental data, to validate the used numerical method. The presented results show good overall agreement for the relevant regimes, with a tendency to slightly overpredict the separation position. In the consecutive step the method will be extended to simulate the coupled problem of flow structure interaction.

Item URL in elib:https://elib.dlr.de/98160/
Document Type:Conference or Workshop Item (Speech)
Title:Flow Separation Study in Stiff Ovalized Rocket Nozzles, Part II: Numerical Approach
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jack, SebastianSebastian.Jack (at) dlr.deUNSPECIFIED
Génin, Chloéchloe.genin (at) dlr.deUNSPECIFIED
Date:2015
Journal or Publication Title:51st AIAA/SAE/ASEE Joint Propulsion Conference
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2015-4154
Status:Published
Keywords:Flow Separation, Nozzle, Cold Gas, CFD, Experiment, TIC
Event Title:51st AIAA/SAE/ASEE Joint Propulsion Conference
Event Location:Orlando, USA
Event Type:international Conference
Event Dates:27.-29. Jul. 2015
Organizer:AIAA
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 - ProTAU + Prop2020 Hochleistungstriebwerke
Location: Braunschweig , Lampoldshausen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Institute of Space Propulsion > Rocket Propulsion
Deposited By: Jack, Sebastian
Deposited On:14 Sep 2015 08:29
Last Modified:31 Jul 2019 19:55

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