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ISBN: 978-1-56700-537-0

ISBN Online: 978-1-56700-538-7

ISSN Online: 2377-424X

International Heat Transfer Conference 17
August, 14-18, 2023, Cape Town, South Africa
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ESTIMATING OF THE GAS PROPERTIES BY MEASURING THE ABSORBED HEAT FLUX

Get access (open in a dialog) DOI: 10.1615/IHTC17.230-70
10 pages
Aleksey V. Nenarokomov
Department of Space System Engineering, Moscow Aviation Institute (Aerospace University), Volokolamskoe Shosse 4, Moscow 125993, Russia
Dmitry L. Reviznikov
Moscow Aviation Institute, Volokolamskoe Shosse 4, 125993 Moscow, Russia; Dorodnicyn Computing Centre, Federal Research Center "Computer Science and Control" of Russian Academy of Sciences, 44, b. 2, Vavilov st., Moscow, 119333, Russia
Daria A. Neverova
Moscow Aviation Institute, 4 Volokolamskoe Hgw., Moscow, 125993, Russia
Alena V. Morzhukhina
Space systems department, Moscow Aviation Institute (National Research University)
Sergey S. Budnik
Moscow Aviation Institute, 4 Volokolamskoe Hgw., Moscow, 125993, Russia
Dmitry M. Titov
Moscow Aviation Institute, 4 Volokolamskoe Hgw., Moscow, 125993, Russia

Abstract

We consider numerical solutions to the problem of identification of the gas properties by measuring the heat flux near the critical point of the axisymmetric blunt body that is streamlined supersonic flow of a perfect gas. The transport properties of the gaseous medium are studied as an object of identification. The identification problem is formulated in an extreme setting. It has been shown that the set of points, for which value of the objective function is lower than the value specified by the noise level of the heat flux measuring, has specific structure. This fact allows us to obtain a fairly accurate estimation of the identified parameters by averaging.