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On parameters influencing the wake flow instabilities behind a discrete roughness element on a generic re-entry capsule

Theiß, Alexander and Hein, Stefan (2016) On parameters influencing the wake flow instabilities behind a discrete roughness element on a generic re-entry capsule. 11th European Fluid Mechanics Conference, 12. Sep. 2016, Sevilla, Spanien.

Full text not available from this repository.

Official URL: http://www.efmc11.org/

Abstract

During the re-entry into Earth’s atmosphere the thermal protection system (TPS) of a re-entry capsule has to withstand very high heat loads. Due to a lack of understanding of the physics of laminar-turbulent transition on such blunt vehicles, the design philosophy so far assumed a fully turbulent flow in flight at all times. This conservative design should be replaced by considering the transition onset location for future returning space vehicles, supported by methods based on stability theory and transient growth considerations. Discrete surface inhomogeneities such as attachment-point cavities, compression pads, gaps or steps between heat shield tiles or unevenly ablated TPS material can lead to premature laminar-turbulent transition downstream of the protuberance element (the type of transition investigated in the present study).

Item URL in elib:https://elib.dlr.de/104053/
Document Type:Conference or Workshop Item (Speech)
Title:On parameters influencing the wake flow instabilities behind a discrete roughness element on a generic re-entry capsule
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Theiß, Alexanderalexander.theiss (at) dlr.deUNSPECIFIED
Hein, Stefanstefan.hein (at) dlr.deUNSPECIFIED
Date:2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:laminar-turbulent transition, two-dimensional spatial stability theory, discrete surface roughness, re-entry capsule
Event Title:11th European Fluid Mechanics Conference
Event Location:Sevilla, Spanien
Event Type:international Conference
Event Dates:12. Sep. 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Military Technologies
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > High Speed Configurations
Deposited By: Bachmann, Barbara
Deposited On:06 Jan 2017 13:45
Last Modified:12 Jan 2017 16:12

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