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Lateral Wall Pressure Effects in a Transpiration Cooled Scramjet Model Combustor with Shock-Boundary Layer Interaction

Strauss, Friedolin and General, Stephan and Cragg, Patrick and Schlechtriem, Stefan (2020) Lateral Wall Pressure Effects in a Transpiration Cooled Scramjet Model Combustor with Shock-Boundary Layer Interaction. In: AIAA Propulsion and Energy 2020 Forum Conference Proceedings. AIAA Propulsion and Energy 2020 Forum, 24.-28. Aug. 2020, New Orleans, USA (Virtuelle Veranstaltung). ISSN 10.2514/6.2020-3719.

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Official URL: https://arc.aiaa.org/doi/10.2514/6.2020-3719

Abstract

Cooling experiments are performed by the DLR Institute of Space Propulsion, applying a transpiration cooling system to a scramjet model combustion chamber. Nitrogen and hydrogen coolants are injected through different porous wall samples made of sintered stainless steel into a Mach 2.5 hot gas main flow. Different inlet conditions as well as the response of the static pressure distribution to them at the lateral wall are investigated for the uncooled case and for the maximum blowing ratio for each material together with a shock impingement caused by a 9.3° half wedge. Measurement results obtained by optical (Schlieren, Background Oriented Schlieren) and in-situ measurement systems are compared. Results show a strong independence of the lateral static pressure distribution from the choice of coolant, but not from the coolant intrusion depth and flow path shock pattern. Results show a good agreement with previous results gained for the coolant wake region. Pressure fluctuation phenomena and further research requirements are discussed.

Item URL in elib:https://elib.dlr.de/140055/
Document Type:Conference or Workshop Item (Speech)
Title:Lateral Wall Pressure Effects in a Transpiration Cooled Scramjet Model Combustor with Shock-Boundary Layer Interaction
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Strauss, FriedolinFriedolin.Strauss (at) dlr.dehttps://orcid.org/0000-0002-1385-4326
General, StephanStephan.General (at) dlr.dehttps://orcid.org/0000-0001-5606-882X
Cragg, PatrickPatrick.Cragg (at) dlr.deUNSPECIFIED
Schlechtriem, StefanStefan.Schlechtriem (at) dlr.dehttps://orcid.org/0000-0002-3714-9664
Date:17 August 2020
Journal or Publication Title:AIAA Propulsion and Energy 2020 Forum Conference Proceedings
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
ISSN:10.2514/6.2020-3719
Status:Published
Keywords:Transpiration Cooling, Fluid Dynamics, Thermodynamics, Scramjet, Hypersonics, High-Speed Air Breathing Propulsion, Ground Testing
Event Title:AIAA Propulsion and Energy 2020 Forum
Event Location:New Orleans, USA (Virtuelle Veranstaltung)
Event Type:international Conference
Event Dates:24.-28. Aug. 2020
Organizer:AIAA - American Institute of Aeronautics and Astronautics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Propellants
Institute of Space Propulsion > Engineering
Institute of Space Propulsion > Leitungsbereich RA
Deposited By: Strauss, Friedolin
Deposited On:05 Jan 2021 08:44
Last Modified:05 Jan 2021 08:44

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