Conjugate natural convection combined with surface thermal radiation in an air filled cavity with internal heat source

Semen G. Martyushev, Mikhail A. Sheremet

Результат исследований: Материалы для журналаСтатьярецензирование

65 Цитирования (Scopus)

Аннотация

A two-dimensional numerical analysis of combined heat transfer (transient natural convection, surface thermal radiation and conduction) in an air filled square enclosure having heat-conducting solid walls of finite thickness and a local heat source in conditions of convective heat exchange with an environment has been carried out. The governing equations formulated in terms of the dimensionless stream function, vorticity and temperature have been numerically solved using the finite difference method. Particular efforts have been focused on the effects of five types of influential factors such as the Rayleigh number 104 ≤ Ra ≤ 106, the internal surface emissivity 0 ≤ ε < 1, the thermal conductivity ratio 1 ≤ k1,2 ≤ 1000, the ratio of solid wall thickness to cavity spacing 0.1 ≤ l/L ≤ 0.3 and the dimensionless time 0 ≤ τ ≤ 100 on the fluid flow and heat transfer. Comprehensive Nusselt numbers data are presented as functions of the governing parameters mentioned above.

Язык оригиналаАнглийский
Страницы (с-по)51-67
Число страниц17
ЖурналInternational Journal of Thermal Sciences
Том76
DOI
СостояниеОпубликовано - 1 янв 2014

ASJC Scopus subject areas

  • Engineering(all)
  • Condensed Matter Physics

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