K-distributions for gas mixtures in hypersonic nonequilibrium flows

Ankit Bansal; Michael Modest; Deborah Levin

K-distributions for gas mixtures in hypersonic nonequilibrium flows

Ankit Bansal, Michael Modest, Deborah Levin

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A k-distributionmodel is presented for gas mixtures in thermodynamic nonequilibrium, containing strongly radiating atomic species N and O together with molecular species of N₂, N⁺₂, NO and O₂. In the VUV range of the spectrum there is strong absorption of atomic radiation by bands of N₂. For this spectral range, a multi-scale model is presented, where RTEs are solved separately for each emitting species and overlap with other species is treated in an approximate way. Methodology for splitting the gas mixture into scales and evaluation of the overlap parameter between different scales is presented. Accuracy of the new model is demonstrated by solving the radiative transfer equation along the stagnation line flow field of the Crew Exploration Vehicle (CEV).

Original language	English (US)
Title of host publication	48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
State	Published - Dec 14 2010
Externally published	Yes
Event	48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States Duration: Jan 4 2010 → Jan 7 2010

Publication series

Name	48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

Other

Other	48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
Country	United States
City	Orlando, FL
Period	1/4/10 → 1/7/10

ASJC Scopus subject areas

Aerospace Engineering

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K-distributions for gas mixtures in hypersonic nonequilibrium flows. / Bansal, Ankit; Modest, Michael; Levin, Deborah.

48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. 2010. 2010-0234 (48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Bansal, A, Modest, M & Levin, D 2010, K-distributions for gas mixtures in hypersonic nonequilibrium flows. in 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition., 2010-0234, 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Orlando, FL, United States, 1/4/10.

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abstract = "A k-distributionmodel is presented for gas mixtures in thermodynamic nonequilibrium, containing strongly radiating atomic species N and O together with molecular species of N2, N+2, NO and O2. In the VUV range of the spectrum there is strong absorption of atomic radiation by bands of N2. For this spectral range, a multi-scale model is presented, where RTEs are solved separately for each emitting species and overlap with other species is treated in an approximate way. Methodology for splitting the gas mixture into scales and evaluation of the overlap parameter between different scales is presented. Accuracy of the new model is demonstrated by solving the radiative transfer equation along the stagnation line flow field of the Crew Exploration Vehicle (CEV).",

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N2 - A k-distributionmodel is presented for gas mixtures in thermodynamic nonequilibrium, containing strongly radiating atomic species N and O together with molecular species of N2, N+2, NO and O2. In the VUV range of the spectrum there is strong absorption of atomic radiation by bands of N2. For this spectral range, a multi-scale model is presented, where RTEs are solved separately for each emitting species and overlap with other species is treated in an approximate way. Methodology for splitting the gas mixture into scales and evaluation of the overlap parameter between different scales is presented. Accuracy of the new model is demonstrated by solving the radiative transfer equation along the stagnation line flow field of the Crew Exploration Vehicle (CEV).

AB - A k-distributionmodel is presented for gas mixtures in thermodynamic nonequilibrium, containing strongly radiating atomic species N and O together with molecular species of N2, N+2, NO and O2. In the VUV range of the spectrum there is strong absorption of atomic radiation by bands of N2. For this spectral range, a multi-scale model is presented, where RTEs are solved separately for each emitting species and overlap with other species is treated in an approximate way. Methodology for splitting the gas mixture into scales and evaluation of the overlap parameter between different scales is presented. Accuracy of the new model is demonstrated by solving the radiative transfer equation along the stagnation line flow field of the Crew Exploration Vehicle (CEV).

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