Experimental and Numerical Study of Multiple Free Jet Impingement Arrays with Al2O3-Water Nanofluid

Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
Volume 65, No. 2, January 2020, Pages 230-252

Amr Mostafa Darwish1,*, Abdel-Fattah Mohamed El-Kersh2, Ibrahim Mahmoud El-Moghazy2, Mohamed Naguib Elsheikh3
1 Department of Mechanical Power Engineering, Faculty of Engineering, Beni-Suef University, Egypt
2 Department of Mechanical Power Engineering, Faculty of Engineering, Minia University, Egypt
3 Department of Mechanical Power Engineering, Faculty of Industrial Educational, Beni-Suef University, Egypt
*Corresponding author: amr011309@eng.bsu.edu.eg

KEYWORDS

Nanofluid; jet impingement cooling; free surface flow; heat transfer enhancement

ABSTRACT

Nanofluid jet impingement cooling is commonly used in many industrial applications due to its capability to dissipate large amounts of heat fluxes from surfaces. In this paper, an experimental and numerical investigation on heat transfer enhancement and fluid flow characteristics of multiple free surface jet impingement using water and Al2O3-water nanofluid as coolants were described. The effects of changing holes arrangement, nanofluid concentration and target to plate distance were investigated. Two jet arrays were employed; inline and staggered. A 3-D numerical calculations using Ansys CFX with standard k-? turbulence model were presented. Results are obtained in terms of average Nusselt numbers, also the velocity, pressure, volume fraction and surface temperature contours were presented. The results show that, the best heat transfer enhancement was obtained at H/Djet=20 using staggered jet arrangement. From experimental results, about 48% and 57% increase in average Nusselt number were obtained for inline and staggered jet arrays respectively at 6 m/s velocity and 10% nanofluid volume fraction. The numerical results presented good agreement with experimental results at low Reynolds numbers. Correlation equations were created to calculate Nusselt number for both inline and staggered jets cooling systems.

CITE THIS ARTICLE

MLA
Amr Mostafa, Darwish, et al. “Experimental and Numerical Study of Multiple Free Jet Impingement Arrays with Al2O3-Water Nanofluid.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 65.2 (2020): 230-252.

APA
Amr Mostafa, D., Abdel-Fattah, M. E., Ibrahim Mahmoud, E., & Mohamed Naguib, E.(2020). Experimental and Numerical Study of Multiple Free Jet Impingement Arrays with Al2O3-Water Nanofluid. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 65(2), 230-252.

Chicago
Amr Mostafa Darwish, Abdel-Fattah Mohamed El-Kersh, Ibrahim Mahmoud El-Moghazy, and Mohamed Naguib Elsheikh. “Experimental and Numerical Study of Multiple Free Jet Impingement Arrays with Al2O3-Water Nanofluid.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 65, no. 2 (2020): 230-252.

Harvard
Amr Mostafa, D., Abdel-Fattah, M.E., Ibrahim Mahmoud, E., and Mohamed Naguib, E., 2020. Experimental and Numerical Study of Multiple Free Jet Impingement Arrays with Al2O3-Water Nanofluid. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 65(2), pp. 230-252.

Vancouver
Amr Mostafa D, Abdel-Fattah ME, Ibrahim Mahmoud E, Mohamed Naguib E. Experimental and Numerical Study of Multiple Free Jet Impingement Arrays with Al2O3-Water Nanofluid. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 2020;65(2): 230-252.

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