RUS  ENG JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB
 General information Latest issue Archive Search papers Search references RSS Latest issue Current issues Archive issues What is RSS

 Computer Research and Modeling: Year: Volume: Issue: Page: Find

 Computer Research and Modeling, 2014, Volume 6, Issue 3, Pages 383–396 (Mi crm329)

MODELS IN PHYSICS AND TECHNOLOGY

Numerical analysis of convective-radiative heat transfer in an air enclosure with a local heat source

S. G. Martyusheva, M. A. Sheremetb

a Tomsk State University, 36 Lenin Prospekt, Tomsk, 634050, Russia
b Tomsk Polytechnic University, 30 Lenin Prospekt, Tomsk, 634050, Russia

Abstract: Mathematical simulation of natural convection and surface radiation in a square air enclosure having isothermal vertical walls with a local heat source of constant temperature has been carried out. Mathematical model has been formulated on the basis of the dimensionless variables such as stream function, vorticity and temperature by using the Boussinesq approximation and diathermancy of air. Distributions of streamlines and isotherms reflecting an effect of Rayleigh number $10^3\leq{Ra}\leq10^6$, surface emissivity $0\leq\varepsilon\leq1$, ratio between the length of heat source and the size of enclosure $0.2\leq{l/L}\leq0.6$ and dimensionless time $0\leq\tau\leq100$ on fluid flow and heat transfer have been obtained. Correlations for the average heat transfer coefficient in dependence on $Ra, \varepsilon$ and $l/L$ have been ascertained.

Keywords: natural convection, surface radiation, local heat source of constant temperature, enclosure, mathematical simulation.

DOI: https://doi.org/10.20537/2076-7633-2014-6-3-383-396

Full text: PDF file (6044 kB)
Full text: http://crm.ics.org.ru/.../2153
References: PDF file   HTML file

UDC: 534.54:536.3

Citation: S. G. Martyushev, M. A. Sheremet, “Numerical analysis of convective-radiative heat transfer in an air enclosure with a local heat source”, Computer Research and Modeling, 6:3 (2014), 383–396

Citation in format AMSBIB
\Bibitem{MarShe14} \by S.~G.~Martyushev, M.~A.~Sheremet \paper Numerical analysis of convective-radiative heat transfer in an air enclosure with a local heat source \jour Computer Research and Modeling \yr 2014 \vol 6 \issue 3 \pages 383--396 \mathnet{http://mi.mathnet.ru/crm329} \crossref{https://doi.org/10.20537/2076-7633-2014-6-3-383-396}