Numerical investigation of conjugate free convective heat transfer inside an enclosure with triangular heat generating source

Authors

  • Никита Сергеевич Гибанов (Nikita S. Gibanov) Tomsk State University
  • Михаил Александрович Шеремет (Mikhail A. Sheremet) Tomsk State University

DOI:

https://doi.org/10.17072/1994-3598-2018-4-52-59

Keywords:

natural convection, surface radiation, laminar flow, triangular shape of energy source, finite difference method

Abstract

Numerical investigation of unsteady laminar conjugate natural convection in a square enclosure with a triangular heat generating source located in a center of bottom wall has been carried out. Vertical walls of the cavity were isothermal and they can be considered as heat removal system. The process of heat, mass and momentum transfer inside the enclosure has been described by the system of partial differential equations using the modified variables “stream function – vorticity”. The boundary-value problem has been solved by the finite difference method using the structured grid. The special focus has been given to analysis of evolution of streamlines and isotherms, which describe the behavior of hydrodynamics and heat transfer. Also the study of impact of the surface emissivity of heater walls and cavity walls has been performed. The features of unsteady thermal plume, distributions of both local and integral characteristics at different Ra numbers have been shown.

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Published

2018-12-29

How to Cite

Гибанов (Nikita S. Gibanov) Н. С., & Шеремет (Mikhail A. Sheremet) М. А. (2018). Numerical investigation of conjugate free convective heat transfer inside an enclosure with triangular heat generating source. Bulletin of Perm University. Physics, (4(42). https://doi.org/10.17072/1994-3598-2018-4-52-59

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Section

Regular articles

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