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THERMAL NONEQUILIBRIUM MODELING OF UNSTEADY NATURAL CONVECTION IN TRAPEZOIDAL ENCLOSURES IN THE PRESENCE OF THERMAL RADIATION: EFFECT OF EXPONENTIAL VARIATION OF BOUNDARY CONDITIONS

Volume 2, Edição 4, 2011, pp. 323-333
DOI: 10.1615/SpecialTopicsRevPorousMedia.v2.i4.70
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RESUMO

Continuum equations governing thermal nonequilibrium modeling of unsteady natural convection inside trapezoidal enclosures with the effects of thermal radiation and exponential variation of boundary conditions are developed. These equations account for such effects as interphase heat transfer coefficient effect, thermal radiation effect, modified conductivity ratio effect, and dimensionless time parameter effect. Finite difference method is employed to solve these equations, and comparisons with previous published works are presented. Numerical results for the flow and heat transfer for fluid and solid phases are obtained for various combinations of the physical parameters. Graphical and tabular results illustrating interesting features of the physics of the problem are presented and discussed.

CITADO POR
  1. Al-Mudhaf Ali F., Rashad A.M., Ahmed Sameh E., Chamkha Ali J., EL-Kabeir S.M.M., Soret and Dufour effects on unsteady double diffusive natural convection in porous trapezoidal enclosures, International Journal of Mechanical Sciences, 140, 2018. Crossref

  2. Kushawaha Durgesh, Yadav Sushil, Singh Dwesh K., Magnetic field effect on double-diffusion with magnetic and non-magnetic nanofluids, International Journal of Mechanical Sciences, 191, 2021. Crossref

  3. Almuhtady Ahmad, Alhazmi Muflih, Al-Kouz Wael, Raizah Zehba A. S., Ahmed Sameh E., Entropy Generation and MHD Convection within an Inclined Trapezoidal Heated by Triangular Fin and Filled by a Variable Porous Media, Applied Sciences, 11, 4, 2021. Crossref

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