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Fast‑response temperature‑sensitive‑paint measurements on a hypersonic transition cone

Ozawa, Hiroshi and Laurence, Stuart Jon and Martinez Schramm, Jan and Wagner, Alexander and Hannemann, Klaus (2015) Fast‑response temperature‑sensitive‑paint measurements on a hypersonic transition cone. Experiments in Fluids, 56 (1), pp. 1-13. Springer. DOI: 10.1007/s00348-014-1853-y ISSN 0723-4864

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Official URL: http://link.springer.com/article/10.1007/s00348-014-1853-y/fulltext.html

Abstract

Experiments are performed using a fastresponse temperature-sensitive-paint (TSP) technique to measure the heat-flux distribution on a slender cone in a hypersonic shock tunnel under both laminar and transitional conditions. The millisecond-order test duration together with the self-luminosity of shock layers place stringent conditions on the choice of TSP luminophore and the TSP-layer thickness that can be employed. The luminosity and dimming from particulates in the free-stream cause additional problems in interpreting the obtained intensity profiles. Nevertheless, favorable agreement with thermocouple-based measurements show that it is possible to derive quantitatively accurate heat-flux distributions with the TSP technique for temperature rises of up to approximately 40 K above room temperature. The technique accuracy is adversely affected at higher temperatures, which is thought to result from non-constant thermal properties of the insulating base layer. At high unit Reynolds number conditions, time-resolved heat-flux distributions show large-scale unsteadiness in the boundary-layer transition location and reveal transient streamwise streaks developing in the transitional region.

Item URL in elib:https://elib.dlr.de/93897/
Document Type:Article
Additional Information:Published online: 07. Dec. 2014, Article: 1853
Title:Fast‑response temperature‑sensitive‑paint measurements on a hypersonic transition cone
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ozawa, Hiroshihiroshi.ozawa (at) dlr.deUNSPECIFIED
Laurence, Stuart JonDept. of Aerospace Engineering, University of MarylandUNSPECIFIED
Martinez Schramm, Janjan.martinez (at) dlr.deUNSPECIFIED
Wagner, Alexanderalexander.wagner (at) dlr.deUNSPECIFIED
Hannemann, Klausklaus.hannemann (at) dlr.deUNSPECIFIED
Date:2015
Journal or Publication Title:Experiments in Fluids
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:56
DOI :10.1007/s00348-014-1853-y
Page Range:pp. 1-13
Publisher:Springer
ISSN:0723-4864
Status:Published
Keywords:temperature-sensitive-paint (TSP), hypersonic shock tunnel, boundary-layer transition, streamwise streaks
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 - Raumfahrzeugsysteme - Anlagen u. Messtechnik
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Micknaus, Ilka
Deposited On:19 Dec 2014 16:17
Last Modified:06 Sep 2019 15:25

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