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An Experimental Study on Heat-Flux Reduction by Electromagnetic Fields in Ionized Flows

Gülhan, Ali und Esser, Burkard und Koch, Uwe und Siebe, Frank und Riehmer, Johannes und Giordano, Domenico und Konigorski, Detlev (2009) An Experimental Study on Heat-Flux Reduction by Electromagnetic Fields in Ionized Flows. In: Proceedings of CEAS 2009 European Air and Space Conference. CEAS 2009 European Air and Space Conference, 26.-29. Oktober 2009, Manchester, England.

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Kurzfassung

In the frame of this work an experimental study has been performed on heat-flux mitigation within high-enthalpy ionized-argon flows by application of an external magnetic-induction field. Two different axially symmetric test models, containing water-cooled magnet coils, were investigated. The models were made of a material with low thermal conductivity, in order to visualize surface-temperature distribution. The latter has been measured by infrared thermography. Heat-flux rates have been derived from measured front and rear surface temperature taking into account temperature-dependent material characteristics and considering radiative-cooling exchange to the environment. Flow-field properties have been quantitatively characterized by laser induced fluorescence, microwave interferometry, diode laser absorption spectroscopy, electrostatic probes and Pitot probes. Remarkable measured surface-temperature reductions up to 44%, and derived heat-flux mitigation up to 85%, have been observed in the presence of an externally applied magnetic-induction field. The influence of change in the polarity of the electromagnetic coils has also been measured and showed in contrast to some former studies comparable effects for both polarities.

Dokumentart:Konferenzbeitrag (Vortrag)
Titel:An Experimental Study on Heat-Flux Reduction by Electromagnetic Fields in Ionized Flows
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Gülhan, AliDLR
Esser, BurkardDLR
Koch, UweDLR
Siebe, FrankDLR
Riehmer, JohannesDLR
Giordano, DomenicoESA
Konigorski, DetlevEADS Astrium
Datum:2009
Erschienen in:Proceedings of CEAS 2009 European Air and Space Conference
Status:veröffentlicht
Stichwörter:Experimental study, Heat-flux reduction, Electromagnetic fields, Ionized flows, Arc heated facility L2K
Veranstaltungstitel:CEAS 2009 European Air and Space Conference
Veranstaltungsort:Manchester, England
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:26.-29. Oktober 2009
Veranstalter :CEAS
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W RP - Raumtransport
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W RP - Raumtransport
DLR - Teilgebiet (Projekt, Vorhaben):W - Zukünftige Raumtransporter - Entwurf und Simulationsmethoden für Raumtransporter (alt)
Standort: Köln-Porz , Braunschweig , Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Über- und Hyperschalltechnologien
Hinterlegt von: Christine Adams
Hinterlegt am:25 Jan 2010 15:48
Letzte Änderung:07 Nov 2012 11:11

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