TURBULENT HEAT TRANSFER IN A CHANNEL WITH A BUILT-IN SQUARE CYLINDER: THE EFFECT OF REYNOLDS NUMBER

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HASHEMIAN S.M.; RAHNAMA M.; FARHADI M.

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Journal: SCIENTIA IRANICA Year:2008 | Volume:15 | Issue:1 Page(s): 57-64

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Title

TURBULENT HEAT TRANSFER IN A CHANNEL WITH A BUILT-IN SQUARE CYLINDER: THE EFFECT OF REYNOLDS NUMBER

Author(s)

HASHEMIAN S.M. | RAHNAMA M. | FARHADI M. | Issue Writer Certificate

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Abstract

Turbulent heat transfer, in a three dimensional channel ow, in the presence of a square cylinder, was investigated numerically. The existence of a square cylinder in a channel, compared to a plain one, changes the heat transfer rate from the walls of the channel. A Large Eddy Simulation (LES) of a turbulent flow was performed to simulate flow behavior in a channel for Reynolds numbers in the range of 1000 to 15000. The results obtained for the Nusselt number distribution along the wall of the channel, at Re = 3000, followed those of experimental data with good accuracy. It was observed that the existence of a square cylinder makes the attached wall boundary layer separate, with a subsequent recirculation zone downstream of the cylinder. The Nusselt number distribution along the wall of the channel shows an increase, with a relative maximum, slightly downstream of the reattachment point. Heat transfer from the wall of the channel increases with increasing Reynolds number. A correlation was obtained for the variation of the mean total Nusselt number with the Reynolds number.

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APA: Copy

HASHEMIAN, S.M., RAHNAMA, M., & FARHADI, M.. (2008). TURBULENT HEAT TRANSFER IN A CHANNEL WITH A BUILT-IN SQUARE CYLINDER: THE EFFECT OF REYNOLDS NUMBER. SCIENTIA IRANICA, 15(1), 57-64. SID. https://sid.ir/paper/289586/en

Vancouver: Copy

HASHEMIAN S.M., RAHNAMA M., FARHADI M.. TURBULENT HEAT TRANSFER IN A CHANNEL WITH A BUILT-IN SQUARE CYLINDER: THE EFFECT OF REYNOLDS NUMBER. SCIENTIA IRANICA[Internet]. 2008;15(1):57-64. Available from: https://sid.ir/paper/289586/en

IEEE: Copy

S.M. HASHEMIAN, M. RAHNAMA, and M. FARHADI, “TURBULENT HEAT TRANSFER IN A CHANNEL WITH A BUILT-IN SQUARE CYLINDER: THE EFFECT OF REYNOLDS NUMBER,” SCIENTIA IRANICA, vol. 15, no. 1, pp. 57–64, 2008, [Online]. Available: https://sid.ir/paper/289586/en

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