Numerical analysis of the thermal conduction of a triangular solid region on the flow and free convection heat transfer in a two-dimensional cavity containing nanofluid

Document Type : Original Article

Authors

1 velayat uni

2 دانشگاه ستاری

10.22034/joae.2023.355188.1122

Abstract

In this article, the correlated free convection heat transfer in a rectangular cavity containing nanofluid and with a triangular solid area was investigated numerically.The governing equations written in terms of the primitive variables were solved numerically using the finite volume method while the velocity and pressure fields were coupled using the SIMPLER algorithm. Correlated characteristics such as the thickness of the triangular solid area (dimensions of the triangular solid area) and the ratio of the thermal conductivity coefficient of the triangular solid area to the nanofluid on the flow and free convection heat transfer cavity were investigated. Studies have been carried out for the Rayleigh number Ra  105, and constant volume fraction ϕ=0.02 for the ratio of thermal conductivity coefficients Kr = 0.1, Kr = 1 and Kr = 10,as well as for different dimensions of the triangular solid area.The results showed that with the increase in the ratio of the dimensions and thickness of the triangular solid region, as well as the ratio of the conductivity coefficient in a constant Rayleigh number, the temperature and velocity of the nanofluid increase. Also, with the increase in the ratio of the dimensions of the triangular solid area and the ratio of the conductivity coefficient, the values of the average Nusselt numbers increase along the walls, and more heat transfer passes through the solid-fluid interface.

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Journal of Aeronautical Engineering
Volume 25, Issue 2
September 2023
Pages 1-11

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History

  • Receive Date: 07 August 2022
  • Revise Date: 13 September 2022
  • Accept Date: 30 September 2023

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