Flow And Heat Transfer Characteristics Of Inclined Jet Impingement On A Flat Plate

Year 2020, Volume: 23 Issue: 3, 697 - 706, 01.09.2020

Amir Lak Tamer Çalışır Şenol Başkaya

https://doi.org/10.2339/politeknik.543267

Cited By: 2

Abstract

The
effects of a turbulent inclined jet impinging on a horizontal flat surface were
investigated numerically with respect to the flow field and heat transfer
characteristics. Main purpose of the study was to show the effects of inclined
jet impingement on flow characteristics, which affects the heat transfer on a
surface with a constant heat flux. Simulations were performed for different
dimensionless jet-to-plate distances (2 < H/D < 8), inclination angle of
the jet (45° < α < 90°), and Reynolds number (1500 < Re < 30000).
The heat transfer and fluid flow characteristics have been discussed using
temperature contours and velocity vectors. Initial simulation results have been
validated with experimental data from the literature, and a fairly good agreement
has been achieved. Results showed that by decreasing the inclination angle, a
decrease in the maximum heat transfer occurs. The ratio of the maximum Nusselt
number to the stagnation Nusselt number increases as the jet angle is
increased. 

Keywords

Heat transfer, inclined impinging jet, computational fluid dynamics (CFD), turbulence

Flow and Heat Transfer Characteristics of Inclined Jet Impingement on a Flat Plate

Abstract

The
effects of a turbulent inclined jet impinging on a horizontal flat surface were
investigated numerically with respect to the flow field and heat transfer
characteristics. Main purpose of the study was to show the effects of inclined
jet impingement on flow characteristics, which affects the heat transfer on a
surface with a constant heat flux. Simulations were performed for different
dimensionless jet-to-plate distances (2 < H/D < 8), inclination angle of
the jet (45° < α < 90°), and Reynolds number (1500 < Re < 30000).
The heat transfer and fluid flow characteristics have been discussed using
temperature contours and velocity vectors. Initial simulation results have been
validated with experimental data from the literature, and a fairly good agreement
has been achieved. Results showed that by decreasing the inclination angle, a
decrease in the maximum heat transfer occurs. The ratio of the maximum Nusselt
number to the stagnation Nusselt number increases as the jet angle is
increased. 

Keywords

Heat transfer, inclined impinging jet, Computational Fluid Dynamics(CFD), turbulence

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