Gülhan, Ali and Esser, Burkard and Koch, Uwe and Siebe, Frank and Riehmer, Johannes and Giordano, Domenico and 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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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.
|Document Type:||Conference or Workshop Item (Speech)|
|Title:||An Experimental Study on Heat-Flux Reduction by Electromagnetic Fields in Ionized Flows|
|Journal or Publication Title:||Proceedings of CEAS 2009 European Air and Space Conference|
|Keywords:||Experimental study, Heat-flux reduction, Electromagnetic fields, Ionized flows, Arc heated facility L2K|
|Event Title:||CEAS 2009 European Air and Space Conference|
|Event Location:||Manchester, England|
|Event Type:||international Conference|
|Event Dates:||26.-29. Oktober 2009|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Space (old)|
|HGF - Program Themes:||W RP - Raumtransport|
|DLR - Research area:||Space|
|DLR - Program:||W RP - Raumtransport|
|DLR - Research theme (Project):||W - Zukünftige Raumtransporter - Entwurf und Simulationsmethoden für Raumtransporter (old)|
|Location:||Köln-Porz , Braunschweig , Göttingen|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology|
|Deposited By:||Christine Adams|
|Deposited On:||25 Jan 2010 15:48|
|Last Modified:||07 Nov 2012 11:11|
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