Computational Fluid Dynamics Analysis of Impingement Heat Transfer in an Inline Array of Multiple Jets
Singh P. Grover N.K. Agarwal V. Sharma S. Singh J. Sadeghzadeh M. Issakhov A.
2021Hindawi Limited
Mathematical Problems in Engineering
2021#2021
Amid all convective heat transfer augmentation methods employing single phase, jet impingement heat transfer delivers significantly higher coefficient of local heat transfer. The arrangement leading to nine jets in square array has been used to cool a plate maintained at constant heat flux. Numerical study has been carried out using RANS-based turbulence modeling in commercial CFD Fluent software. The turbulent models used for the study are three different k-ϵmodels (STD, RNG, and realizable) and SST k-ωmodel. The numerical simulation output is equated with the experimental results to find out the most accurate turbulence model. The impact of variation of Reynolds number, inter-jet spacing, and separation distance has been considered for the geometry considered. These parameters affect the coefficient of heat transfer, temperature, and turbulent kinetic energy related to flow. The local hvalues have been noticed to decline with the rise in separation distance H/D.The SST k-ωmodel has been noticed to be in maximum agreement with the experimental results. The average value of heat transfer coefficient hreduces from 210 to 193 W/m2K with increase in H/Dfrom 6 to 10 at Re= 9000 and S/D of 3. As per numerical results, inter-jet spacing S/Dof 3 has been determined to be the most optimum value.
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Department of Mechanical Engineering, Dr. BR Ambedkar National Institute of Technology, Jalandhar, India
Department of Mechanical Engineering, IK Gujral Punjab Technical University, Main Campus-Kapurthala, Kapurthala, India
Department of Renewable Energy and Environmental Engineering, University of Tehran, Tehran, Iran
Faculty of Mechanics and Mathematics, Department of Mathematical and Computer Modelling, Al-Farabi Kazakh National University, Almaty, Kazakhstan
Department of Mechanical Engineering
Department of Mechanical Engineering
Department of Renewable Energy and Environmental Engineering
Faculty of Mechanics and Mathematics
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