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      https://www.ias.ac.in/article/fulltext/sadh/046/0097

    • Keywords

       

      Turbulent natural convection; surface radiation; differentially heated enclosure.

    • Abstract

       

      A numerical investigation is performed for heat transfer phenomena occurring in enclosures with different aspect ratios, emissivities and Rayleigh numbers. Interaction of surface radiation and turbulent natural convection of differentially heated enclosures with different positions of heat source and sink has been assessed systematically. The mass, momentum and energy equations have been solved in two-dimensional cartesian coordinates. The turbulence has been modeled using k - ε model. The simulations have been performed on rectangular enclosures with different aspect ratios (0.5, 1, 1.5 and 2) filled with air having Prandtl number 0.7. Surface to Surface radiation model has been incorporated to study the effect of surface radiation on the heat transfer characteristics. The results have been presented in terms of Nusselt number, isotherms and streamlines for various cases. It is concluded that the results can provide insight when designing enclosures for complex engineering applications involving turbulent conditions.

    • Author Affiliations

       

      FRRANC STEEVE I M I M1 VIDHYASAGAR JHADEJHADE2 ANIL KUMAR SHARMA3 JOSEPH DANIEL1

      1. School of Mechanical Engineering, Vellore Institute of Technology, Chennai, India
      2. 2 Indira Gandhi Centre for Atomic Research, Kalpakkam, India
      3. Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi, India
    • Dates

       
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