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Experimental Verification of Heat-Flux Mitigation by Electromagnetic Fields in Partially-Ionized-Argon Flows
Gülhan, Ali and Esser, Burkard and Koch, Uwe and Siebe, Frank and Riehmer, Johannes and Giordano, Domenico and Konigorski, Detlev (2009) Experimental Verification of Heat-Flux Mitigation by Electromagnetic Fields in Partially-Ionized-Argon Flows. Journal of Spacecraft and Rockets, 46 (2), pp. 274-283. ISSN 0022-4650.
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Abstract
This paper describes an experimental study 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 have been investigated. The models have been made of a material with low thermal conductivity 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 temperatures, taking into account temperature-dependent material characteristics and considering radiative-cooling exchange to the environment. Flowfield properties have been quantitatively characterized by laser-induced fluorescence, microwave interferometry, emission spectroscopy, electrostatic probes, and pitot probes. In addition, high-quality video recordings and photographs have been taken for shock-layer visualization. Remarkable measured surface-temperature reductions (16 and 44%) and derived heat-flux mitigations (46 and 85%) have been observed in the presence of an externally applied magnetic-induction field.
| Document Type: | Article | ||||||||||||||||
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| Title: | Experimental Verification of Heat-Flux Mitigation by Electromagnetic Fields in Partially-Ionized-Argon Flows | ||||||||||||||||
| Authors: |
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| Date: | March 2009 | ||||||||||||||||
| Journal or Publication Title: | Journal of Spacecraft and Rockets | ||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||
| In Open Access: | No | ||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||||
| Volume: | 46 | ||||||||||||||||
| Page Range: | pp. 274-283 | ||||||||||||||||
| ISSN: | 0022-4650 | ||||||||||||||||
| Status: | Published | ||||||||||||||||
| Keywords: | Ionized flows, heat flux mitigation, electro dynamic effects, arc heated facility L2K | ||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||
| HGF - Program: | Space | ||||||||||||||||
| HGF - Program Themes: | W RP - Raumtransport | ||||||||||||||||
| DLR - Research area: | Space | ||||||||||||||||
| DLR - Program: | W RP - Raumtransport | ||||||||||||||||
| DLR - Research theme (Project): | W - Grundlagen Raumtransport - Anlagen und Messtechnik (old) | ||||||||||||||||
| Location: | Köln-Porz , Braunschweig , Göttingen | ||||||||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology | ||||||||||||||||
| Deposited By: | Christine Adams | ||||||||||||||||
| Deposited On: | 06 Oct 2008 | ||||||||||||||||
| Last Modified: | 07 Feb 2013 20:35 |
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