Narrow-band κ-distribution database for atomic radiation in hypersonic nonequilibrium flows

Ankit Bansal, Michael F. Modest, Deborah Levin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Full-spectrum κ-distribution (FSK) and multi-group FSK approaches make it possible to evaluate radiative fluxes at a fraction of the cost needed for line-by-line calculations. However, the required κ-distributions need to be assembled from accurate absorption coefficient data for each flow condition, which is computationally expensive. An accurate and compact narrow-band κ-distribution database has been developed for the most important species encountered in hypersonic nonequilibrium flow. The database allows users to calculate desired full-spectrum k-distributions through look-up and interpolation. Strategies for κ-distribution data generation are outlined. The accuracy of the database is tested by comparing narrow-band mean absorption coefficients and narrow-band emissivities with those obtained from line-by-line calculations. Application of the database to construct full-spectrum κ-distributions accurately and efficiently is discussed, and results from a number of heat transfer calculations and cpu-time studies are presented.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME Summer Heat Transfer Conference 2009, HT2009
Pages93-103
Number of pages11
DOIs
StatePublished - Dec 1 2009
Externally publishedYes
Event2009 ASME Summer Heat Transfer Conference, HT2009 - San Francisco, CA, United States
Duration: Jul 19 2009Jul 23 2009

Publication series

NameProceedings of the ASME Summer Heat Transfer Conference 2009, HT2009
Volume1

Other

Other2009 ASME Summer Heat Transfer Conference, HT2009
CountryUnited States
CitySan Francisco, CA
Period7/19/097/23/09

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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    Bansal, A., Modest, M. F., & Levin, D. (2009). Narrow-band κ-distribution database for atomic radiation in hypersonic nonequilibrium flows. In Proceedings of the ASME Summer Heat Transfer Conference 2009, HT2009 (pp. 93-103). (Proceedings of the ASME Summer Heat Transfer Conference 2009, HT2009; Vol. 1). https://doi.org/10.1115/HT2009-88120