Experimental Investigation of Heat Transfer of Single Jet Impingement on a Aluminium Block

Abstract:

Jet Impingement is used in many applications where extensive heating (or) cooling is necessary to produce high heat transfer rate in a localized region. Those applications include glass production, drying of papers, annealing of metals and cooling of electronic equipments. Present work is involved with the experimental investigation of single jet impingement on Aluminium block. The effect of Reynolds number and the distance between the jet and block (H/d ratio) are considered as the interesting variable parameters. The heat transfer rate and reattachment length are reported in detailed for the various Reynolds number and various jet to block ratio. The flow physics revealed that when the Reynolds number increases the reattachment length also increases. The heat transfer rate increases with increase in Reynolds number up to critical heat flux and then further increase of Reynolds number leads to decrease in heat transfer.

• Periodical: Advanced Materials Research (Volumes 984-985)
• Pages: 1115-1124
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.984-985.1115
• Online since: July 2014
• Authors: M. Muthukannan*, M. Brajesh, P. Rajeshkanna, S. Jeyakuma, N. Vikneswaran
• Keywords: Jet Impingement, Reattachment Length, Reynolds Number, Turbulent Flow

References

[1] Ihsan Dagtekin, Hakan F. Oztop, Heat transfer due to double laminar slot jets impingement onto an isothermal wall within one side closed long duct, International Communication in Heat and Mass Transfer 3 (2008) 65-75.

DOI: 10.1016/j.icheatmasstransfer.2007.05.013

[2] M Fenot, E Dorignac, JJ Vullierme, An experimental study on hot round jets impinging a concave surface, International Journal of Heat and Fluid Flow 29 (2008) 945–956.

DOI: 10.1016/j.ijheatfluidflow.2008.03.015

[3] Ravi Yakkatelli, Qianhong Wu , S. Fleischer A Visualization Study of the Flow Dynamics of a Single Round Jet Impinging on Porous Media, Experimental Thermal and Fluid Science 34 (2010) 1008-1015.

DOI: 10.1016/j.expthermflusci.2010.03.004

[4] Wu-Shung Fu, CC Tseng, CP Huang, KN Wang, An experimental investigation of a block moving back and forth on a heat plate under a slot jet, International Journal of Heat and Mass Transfer 50(2007) 3224–3233.

DOI: 10.1016/j.ijheatmasstransfer.2005.05.005

[5] Tzer-Ming Jeng , Sheng-Chung Tzeng, Numerical study of confined slot jet impinging on porous metallic foam heat sink, International Journal of Heat and Mass Transfer 48 (2005) 4685–4694.

DOI: 10.1016/j.ijheatmasstransfer.2005.06.032