Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/17749
Title: Advanced radiation calculations of hypersonic reentry flows using efficient databasing schemes
Authors: Sohn I.
Bansal, Ankit
Levin D.A.
Modest M.F.
Published in: Journal of Thermophysics and Heat Transfer
Abstract: Efficient schemes for databasing emission and absorption coefficients are developed to model radiation from hypersonic nonequilibrium flows. For bound-bound transitions, spectral information including the line-center wavelength and emission and absorption coefficients is stored for typical air plasma species. Since the flow is nonequilibrium, a rate equation approach including both collisional and radiatively induced transitions is used to calculate the electronic state populations, assuming quasi steady state. The general Voigt line-shape function is assumed for modeling the line-broadening. The accuracy and efficiency of the databasing scheme was examined by comparing results of the databasing scheme with those of NEQAIR for the Stardust flowfield. An accuracy of approximately 1% was achieved with an efficiency about three times faster than the NEQAIR code. Copyright © 2010 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
Citation: Journal of Thermophysics and Heat Transfer, (2010), 623- 637
URI: https://doi.org/10.2514/1.45085
http://repository.iitr.ac.in/handle/123456789/17749
Issue Date: 2010
Keywords: Absorption coefficients
Air plasmas
Center wavelength
Hypersonic re-entry
Non equilibrium
Non-equilibrium flows
Quasi-steady state
Rate equation approach
Shape functions
Spectral information
State population
Absorption
Function evaluation
Reentry
Equations of state
ISSN: 8878722
Author Scopus IDs: 36495694800
56650604800
7202969166
7006681520
Author Affiliations: Sohn, I., Pennsylvania State University, University Park, PA 16802, United States, Department of Aerospace Engineering, United States
Bansal, A., Pennsylvania State University, University Park, PA 16802, United States, Department of Aerospace Engineering, United States
Levin, D.A., Pennsylvania State University, University Park, PA 16802, United States, Department of Aerospace Engineering, United States
Modest, M.F., University of California, Merced, CA 95343, United States, Department of Mechanical Engineering, United States
Funding Details: The research performed at the Pennsylvania State University was supported through the NASA grant no. NNX07AC47A.
Corresponding Author: Sohn, I.; Department of Aerospace EngineeringUnited States
Appears in Collections:Conference Publications [ME]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.