Journal ArticleDOI
Temperature Measurements by Laser-Induced Fluorescence Spectroscopy in Nonequilibrium High-Enthalpy Flow
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TLDR
In this paper, the rotational and translational temperature of NO molecules and O atoms in the freestream and behind a bow shock upstream of a blunt body is investigated by using the laser-induced fluorescence (LIF)diagnostictechnique.Abstract:
The e owe eld generated by the high-enthalpy arcjet facility L2K, simulating the stagnation conditions during shuttlereentry and mainly used for testing thermal protection materials, is investigated by using the laser-induced e uorescence (LIF)diagnostictechnique.FortheoperationconditionsoftheL2KfacilityofDLR,thee owconditions are dominated by nonequilibrium effects. In particular, translational and rotational temperatures are assumed to beinequilibrium,butlargedifferencesbetweenrotational,vibrational,and electronictemperatureoccur.Spatially resolved LIF is used to determine rotational and translational temperature of NO molecules and O atoms in the freestream and behind a bow shock upstream of a blunt body. The e ow is modeled numerically using a quasione-dimensional code and a full Navier ‐Stokes two-dimensional axisymmetric code. Good agreement is achieved between the experimental and numerical data in the freestream. The data are also compared with the coherent Stokes anti-Raman scattering measurements performed previously at the same e ow conditions in the same facility on the N2 molecules. Differences caused by the nonequilibrium aspects, in the freestream and across the shock layer, of N2, NO, and O components are evident, and the physical interpretation is discussed.read more
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Journal ArticleDOI
Heat transfer—A review of 2005 literature
Richard J Goldstein,W. E. Ibele,Suhas V. Patankar,Terrence W. Simon,Thomas H. Kuehn,Paul J Strykowski,Kumar K. Tamma,Joachim Heberlein,Jane H. Davidson,John C. Bischof,Francis A Kulacki,Uwe Kortshagen,Sean C. Garrick,Vinod Srinivasan,Kalyanjit Ghosh,Rajat Mittal +15 more
TL;DR: A review of the heat transfer literature published in 2005 can be found in this article, where the authors restrict themselves to papers published in English through a peer-review process, with selected translations from journals published in other languages.
Journal ArticleDOI
Experimental Verification of Heat-Flux Mitigation by Electromagnetic Fields in Partially-Ionized-Argon Flows
Ali Gülhan,Burkard Esser,Uwe Koch,Frank Siebe,Johannes Riehmer,Domenico Giordano,Detlev Konigorski +6 more
TL;DR: In this article, an experimental study on heat-flux mitigation within highenthalpy ionized-argon flows by application of an external magnetic-induction field was conducted using axially symmetric test models containing water-cooled magnet coils.
Journal ArticleDOI
Heat transfer - A review of 2000 literature
Richard J Goldstein,E. R. G. Eckert,W. E. Ibele,Suhas V. Patankar,Terrence W. Simon,Thomas H. Kuehn,Paul J Strykowski,Kumar K. Tamma,Avram Bar-Cohen,Joachim Heberlein,Jane H. Davidson,John C. Bischof,Francis A Kulacki,Uwe Kortshagen,Sean C. Garrick +14 more
Journal ArticleDOI
Nitric-Oxide Planar Laser-Induced Fluorescence Measurements in the Hypersonic Materials Environmental Test System
Jennifer A. Inman,Brett F. Bathel,Craig T. Johansen,Paul M. Danehy,Stephen B. Jones,Jeffrey G. Gragg,Scott C. Splinter +6 more
TL;DR: In this paper, a planar laser-induced fluorescence of naturally occurring nitric oxide has been used to provide insight into baseline flow conditions of the Hypersonic Materials Environmental Test System 400kW arc-heated wind tunnel at NASA Langley Research Center via radial and axial velocity measurements and instantaneous flow-visualization images.
Journal ArticleDOI
Applied radiation physics techniques for diagnostic evaluation of the plasma wind and thermal protection system critical parameters in aerospace re-entry
M. De Cesare,M. De Cesare,L. Savino,Giuseppe Ceglia,Davide Alfano,F. Di Carolo,F. Di Carolo,A.D. French,D. Rapagnani,S. Gravina,A. Cipullo,A. Del Vecchio,A. Di Leva,Antonio D'Onofrio,Umberto Galietti,Lucio Gialanella,Filippo Terrasi +16 more
TL;DR: In this paper, a review of the diagnostic methodologies used in hypersonic test facilities associated with the working principles, the development, the potential and the limitations of arc jet plasma wind tunnels for the evaluation of the aforementioned critical parameters is presented.
References
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Proceedings ArticleDOI
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