Experimental Study of Forced Convective Heat Transfer in a Copper Tube Using Three Types of Nanofluids  

作　　者：Zahraa N.Hussain Jamal M.Ali Hasan S.Majdi Abbas J.Sultan H.Al-Naseri 

机构地区：[1]Department of Chemical Engineering,University of Technology-Iraq,Baghdad,10066,Iraq [2]Department of Chemical Engineering and Petroleum Industries,Al-Mustaqbal University,Babylon,51001,Iraq [3]Chemical Engineering Department,College of Engineering,Tikrit University,Tikrit,34001,Iraq

出　　处：《Fluid Dynamics & Materials Processing》2025年第2期351-370,共20页流体力学与材料加工(英文)

摘　　要：The use of nanofluids as heat transfer media represents an innovative strategy to enhance heat transfer performances.This study investigates experimentally the turbulent convective heat transfer characteristics of waterbased nanofluids containing TiO_(2),CuO,and graphene nanoplatelet(GNP)nanoparticles as they flow through a copper tube.Both the dynamic viscosity and thermal conductivity of these nanofluids were modeled and experimentally measured across varying nanoparticle concentrations(0.01,0.02,and 0.03 vol.%)and temperatures(25℃,35℃,and 45℃).The findings indicate that the behavior of nanofluids depends on the parameter used for comparison with the base fluid.Notably,both the friction factor and heat transfer coefficient increase with higher nanoparticle volume concentrations at a constant Reynolds number.The results further reveal that the GNP/water nanofluid,with a volume concentration of 0.03%at 45℃,exhibit the highest Nusselt number,followed by the CuO/water and TiO_(2)/water nanofluids,with respective increases of 17.8%,11.09%,and 8.11%.

关 键 词：NANOFLUID heat transfer coefficient thermal conductivity heat transfer enhancement 

分 类 号：TK12[动力工程及工程热物理—工程热物理]