Numerical analysis of thermogravitational turbulent convection in a closed rec-tangular region with radiation source of energy
G.V. Kuznetsov and A.E. Nee
Tomsk National Research Polytechnic University, Tomsk, Russia
E-mail: nee_alexander@mail.ru
Keywords: conjugate heat transfer, numerical modeling, natural convection, turbulence, Baldwin-Lomax model, gaseous infrared radiator
Pages: 393–401
Abstract
The mathematical modeling
of the conjugate heat transfer in a closed rectangular region has been carried
out under the conditions of the radiation supply of energy. The temperature and stream function fields
obtained by the modeling illustrate a substantially unsteady nature of
the conjugate heat exchange process under study. An analysis of temperature distributions in typical cross sections of
the solution domain has shown a considerable inhomogeneity of the temperature field. It is found that an increase
in the Rayleigh number leads to substantial modifications of the temperature
and stream function fields. The influence of the distribution of radiation
fluxes over the internal interfaces on the temperature fields and the airflow
character is shown. The influence of the turbulization on the heat transfer intensity near the interfaces between media has
been estimated. Comparisons of the obtained numerical results with experimental
data have shown their good agreement
DOI: 10.1134/S0869864316030094
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