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Studies from University of Bologna Have Provided New Data on Heat Transfer Research (Natural convection of Al2O3/water nanofluid in a square cavity:...

July 1, 2014



Studies from University of Bologna Have Provided New Data on Heat Transfer Research (Natural convection of Al2O3/water nanofluid in a square cavity: Effects of heterogeneous heating)

By a News Reporter-Staff News Editor at Journal of Technology -- Investigators discuss new findings in Heat Transfer Research. According to news reporting out of Bologna, Italy, by VerticalNews editors, research stated, "In this paper, the natural convection in a square cavity filled with Al2O3/water nanofluid has been investigated. The flow and heat transfer characteristics of the nanofluid in the cavity are documented when bottom wall is under heterogeneous heating, the right wall is considered cold while the top and left walls are adiabatic."

Our news journalists obtained a quote from the research from the University of Bologna, "Nine different cases are considered for the non-uniform heat flux where the total heat flux applied to the cavity is the same for all the cases in magnitude but the profile is different. For different values of Rayleigh numbers (10(3)-10(6)), nanoparticle volume fractions (0-9%), and aspect ratios, the optimal profile of heat flux is determined in which Nusselt number is maximized. It is found that the trend of Nusselt number is different for the nine cases at Ra = 10(3) where the conduction is the dominant phenomenon."

According to the news editors, the research concluded: "The results also reveal that for high values of Rayleigh number, i.e. 10(6), the Nusselt number is minimized where the heat flux in the vicinity of adiabatic wall is smallest while the heat flux near the cold wall is biggest."

For more information on this research see: Natural convection of Al2O3/water nanofluid in a square cavity: Effects of heterogeneous heating. International Journal of Heat and Mass Transfer, 2014;74():391-402. International Journal of Heat and Mass Transfer can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; International Journal of Heat and Mass Transfer - www.elsevier.com/wps/product/cws_home/210)

Our news journalists report that additional information may be obtained by contacting I. Rashidi, University of Bologna, Dept. of Ind Engn, I-40136 Bologna, Italy. Additional authors for this research include O. Mahian, G. Lorenzini, C. Biserni and S. Wongwises.

Keywords for this news article include: Italy, Europe, Bologna, Heat Transfer Research

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Journal of Technology


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