numerical simulation of heat transfer in a cavity with discrete heat source using lattice Boltzmann method

Authors

1 assistant professor

2 Golpayegan university

Abstract

In this paper, square cavitywith air inside, two heaters situated at its lower wall, its upper wall insulated, and its two side walls kept at a constant temperature. The Lattice Boltzmann method has been used for simulation in this study; and the overall goals of this research are to optimize the installation length of heaters and to explore the effects of the amplitude and wavelength of thermal flux fluctuation and Riley’s number. The findings indicate that the flow within the cavity stabilizes more quickly by increasing the difference between the oscillation amplitude and period of thermal flux in heaters.In this paper, square cavitywith air inside, two heaters situated at its lower wall, its upper wall insulated, and its two side walls kept at a constant temperature. The Lattice Boltzmann method has been used for simulation in this study; and the overall goals of this research are to optimize the installation length of heaters and to explore the effects of the amplitude and wavelength of thermal flux fluctuation and Riley’s number. The findings indicate that the flow within the cavity stabilizes more quickly by increasing the difference between the oscillation amplitude and period of thermal flux in heaters

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Main Subjects

References

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Iranian Journal of Mechanical Engineering Transactions of ISME
Volume 19, Issue 4 - Serial Number 49
Fluid Mechanics and Heat Transfer
February 2017
Pages 75-100

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History

  • Receive Date: 04 April 2017
  • Revise Date: 20 August 2017
  • Accept Date: 26 February 2018

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