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Proceedings of the 8th International Symposium on Radiative Transfer RAD-16
June, 6-10, 2016, Cappadocia, Turkey

DOI: 10.1615/RAD-16


ISBN Print: 978-1-56700-458-8

ISSN Online: 2642-5629

ISSN Flash Drive: 2642-5661

OPTICAL DETERMINATION OF TEMPERATURE AND CONCENTRATIONS FOR LAMINAR AND TURBULENT GAS MIXTURES

pages 168-177
DOI: 10.1615/RAD-16.210
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In this study, we present inverse radiation calculation models to reconstruct temperature and species concentrations for laminar gas mixtures and time-averaged temperature, species concentrations and their root mean square (rms) values for turbulent mixtures, based on line-of-sight spectral transmissivity measurements. For turbulent gas mixtures, time-averaged transmissivities and their rms values are successfully related to time-averaged temperatures, species concentrations and their rms values by considering interactions between turbulence and radiation (TRI). The turbulence length scale is retrieved simultaneously with the turbulent scalars. Optimal wavenumber ranges for retrieving temperature and species concentrations of the gas mixtures are discussed. To validate the models, measured spectra are synthesized through calculations from HITEMP 2010 for laminar and turbulent gas mixtures of C02, H20 and CO with N2.

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