Convective heat transfer characteristics of magnetic nanofluids under vertical magnetic field

被引：0

作者：

Wang S. ^{[1
]}

Luo Z. ^{[1
]}

Qing S. ^{[1
]}

Yang Z. ^{[1
]}

Jia Z. ^{[1
]}

Lei J. ^{[1
]}

机构：

[1] College of Metallurgy and Energy Engineering, Kunming University of Technology, Kunming

来源：

Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2021年 / 42卷 / 10期

关键词：

Heat trausfer; Magnetic effect; Nanofluids; Turbulence;

D O I：

10.19912/j.0254-0096.tynxb.2019-0996

中图分类号：

学科分类号：

摘要：

The convective heat transfer characteristics of magnetic nanofluids under vertical magnetic field were studied by setting up convective heat transfer test system. Fe3O4-H2O nanofluids with volume concentrations of 0.5%, 1.0%, 1.5% and 2.0% were prepared by two-step method. The relationship between convective heat transfer coefficient and Reynolds number was studied under the conditions of changing magnetic field intensity, concentration and temperature of nanofluids, including with and without the magnetic field. The results show that the convective heat transfer coefficient increases with the increase of magnetic field intensity; When the magnetic field intensity B≥600 G, the convective heat transfer coefficient increases. When the magnetic field intensity B=800 G and B=1000 G, the convective heat transfer coefficient increases by 23.89% and 26.12% on average; The enhancement of convective heat transfer coefficient under the influence of constant magnetic field is affected by the concentration and temperature of nanoparticles. © 2021, Solar Energy Periodical Office Co., Ltd. All right reserved.

引用

页码：111 / 115

页数：4

共 17 条

[1] ZHANG Q, WANG J H., Three dimensional Monte Carlo simulation of magnetic fluids, Progress in natural science, 1, pp. 105-113, (1995)
[2] TENG A, DENGHAI M I, PEDIATRICS D O., The progress of magnetic nanomaterials in application of biomedicine, Journal of biomedical engineering, 31, 2, (2014)
[3] DU L, ZHOU J M, WANG X W, Et al., Effect of local hyperthermia induced by nanometer magnetic fluid on the rabbit VX2 liver tumor model, Progress in natural science: materials international, 19, 12, pp. 1705-1712, (2009)
[4] MOTOZAWA M, SEKINE T, SAWADA T, Et al., Variation of forced convective heat transfer in rectangular duct flow of a magnetic fluid under magnetic field, Journal of physics: conference series, 412, (2013)
[5] GHASEMIAN M, NAJAFIAN ASHRAFI Z, GOHARKHAH M, Et al., Heat transfer characteristics of Fe3O4 ferrofluid flowing in a mini channel under constant and alternating magnetic fields, Journal of magnetism and magnetic materials, 381, pp. 158-167, (2015)
[6] MOHSEN SHEIKHOLESLAMI K., Effect of spatially variable magnetic field on ferrofluid flow and heat transfer considering constant heat flux boundary condition, European physical journal plus, 129, 11, pp. 248-259, (2014)
[7] JAVED T, MEHMOOD Z, ABBAS Z., Natural convection in square cavity filled with ferrofluid saturated porous medium in the presence of uniform magnetic field, Physica B: condensed matter, 506, pp. 122-132, (2016)
[8] MOHAMMADPOURFARD M., Numerical study of ferrofluid flow and heat transfer in the presence of a non-uniform magnetic field in rectangular microchannels, Heat transfer-Asian research, 41, 4, pp. 302-317, (2012)
[9] BAHIRAEI M, HANGI M, RAHBARI A., A two-phase simulation of convective heat transfer characteristics of water-Fe3O4 ferrofluid in a square channel under the effect of permanent magnet, Applied thermal engineering, 147, pp. 991-997, (2018)
[10] AZIZIAN R, DOROODCHI E, MCKRELL T, Et al., Effect of magnetic field on laminar convective heat transfer of magnetite nanofluids, International journal of heat and mass transfer, 68, pp. 94-109, (2014)

← 1 2 →