Experimental investigation on the thermal conductivity and shear viscosity of viscoelastic-fluid-based nanofluids

Yang, Juan-Cheng; Li, Feng-Chen; Zhou, Wenwu; He, Yurong; Jiang, Baocheng

doi:10.1016/j.ijheatmasstransfer.2012.02.052

Cited by 116 publications

(51 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At least five types of viscometers with different principles of operations have been used in viscosity measurements, viz. capillary tube viscometer [42,94], vibro-viscometer [17,182], rotating viscometer which includes cone-plate, flat plate and concentric geometries [18,32,43,44,68,76,81,82,85,86,[183][184][185][186][187], falling ball/falling piston viscometer [87] and cup-type viscometer.…”

Section: Experimental Set-upsmentioning

confidence: 99%

The Viscosity of Nanofluids: A Review of the Theoretical, Empirical, and Numerical Models

Meyer

Adio

Sharifpur

et al. 2015

Heat Transfer Engineering

198

View full text Add to dashboard Cite

The enhanced thermal characteristics of nanofluids have made it one of the fastest-growing research areas in the last decade. Numerous researches have shown the merits of nanofluids in heat transfer equipment. However, one of the problems is the increase in viscosity due to the suspension of nanoparticles. This viscosity increase is not desirable in the industry, especially when it involves flow, such as in heat exchanger or micro-channel applications INTRODUCTIONColloidal suspension dates back to Maxwell's study in 1873 [1]. Though the idea behind his study was vivid, the imposed problems were too enormous for profitable engineering solutions [2]. In 1995, Choi [3] came up with a pioneering idea based on Maxwell's study and suspended ultrafine particles (nanoparticles) in conventional heat transfer fluids. His invention has opened up a myriad of opportunities in research and development. Nanofluids descriptively are colloidal suspensions containing metallic (Ag, Au, Al, Cu, Ni, etc.), non-metallic (single-and multi-wall carbon nanotube (SWCNT and MWCNT), Si, Graphene, etc.), metallic oxide (Al2O3, CuO, NiO2,TiO2, etc.) and oxides of non-metals (SiO2, SiC, MgO, CaCO3, etc.) nanoparticles suspended in conventional heat transfer fluids such as water, engine oil, ethylene glycol, transformer oil, gear oil or mixture of two or more heat transfer fluids [2,3]. When compared with previous microparticle suspensions in conventional heat transfer fluids, it is a special type of fluid with numerous applications potentials because of its enhanced thermal conductivity, stability and homogeneity [3,4]. Microscale particles in suspensions lead to abrasion, clogging of flow paths, pressure drop and high pumping power requirements, therefore, its sustainability was impossible. Besides, nanofluids can reduce the pumping power in engineering equipment significantly and do not pose the problem of clogging and abrasion of equipment flow paths [5][6][7][8]. Therefore, the design and engineering of physical systems are now being tailored towards using nanofluid as working fluid.The impact of colloidal suspension cuts across the fields of science, biological science, medical, pharmaceutical and engineering. In the context of sustainable energy development and thermal management, nanofluids are becoming more and more significant as the need for efficient thermal management is of paramount importance. Moreover, the level of miniaturisation of devices today as technology advances is overwhelming. Devices such as microprocessors, microelectromechanical systems (MEMS), nanoelectromechanical systems (NEMS), microchannels and lab-on-chips come with high-density heat flux that needs quick heat removal for 3 efficient performance, stability and durability, which, from all indications, could be provided by nanofluids for now [9][10][11][12]. The following are also emerging areas of applications of nanoparticles and nanofluids: (i) they could be useful in medicine in the targeted treatment of malignant cells without damaging healthy tis...

show abstract

Section: Experimental Set-upsmentioning

confidence: 99%

The Viscosity of Nanofluids: A Review of the Theoretical, Empirical, and Numerical Models

Meyer

Adio

Sharifpur

et al. 2015

Heat Transfer Engineering

198

View full text Add to dashboard Cite

show abstract

“…Most of the viscosity data of nanofluids in the literature exhibited the trend that as t h e v o l u m e c o n c e n t r a t i o n o f t h e p a r t i c l e s i n c r e a s e d , t h e e f f e c t i v e v i s c o s i t y a l s o increased [1,7,17,18,[20][21][22]. Chevalier et al [23] measured the relative viscosity of nanofluids containing three different sizes of silicon dioxide nanoparticles with diameters of 35±3, 94±5 and 190±8 nm at different volume concentrations up to 7%.…”

Section: Effect Of Volume Concentrationmentioning

confidence: 99%

“…Changes in viscosity properties in industrial applications influence the pumping power required as well as the convective heat transfer coefficients. Therefore, accurate information on the viscosity properties of nanofluids is essential [1]. Although the heat capacity and density of nanofluids can be predicted accurately it is challenging to determine with great accuracy, the viscosity of nanofluids due to hydrodynamic interactions and particle-particle interactions of nanoparticles in dispersions [2].…”

Section: Introductionmentioning

confidence: 99%

Viscosity of nanofluids based on an artificial intelligence model

Mehrabi

Sharifpur

Meyer

2013

International Communications in Heat and Mass Transfer

View full text Add to dashboard Cite

“…The relationship between convective heat transfer behavior of nanofluids and their rheological behavior has been extensively studied (Kwak and Kim 2005;Prasher et al 2006a, b;Ding et al 2006;He et al 2007;Namburu et al 2007;Chen et al 2007Chen et al , 2009aSaeedinia et al 2012;Yang et al 2012;Hachey et al 2014). In these studies, nanofluids exhibited either Newtonian or both Newtonian and non-Newtonian behavior depending on particle size and shape, particle concentration, base liquid viscosity, solution chemistry-related surface layer and electro-viscous effects.…”

Section: Inertial Forces Viscous Forces ð2:9þmentioning

confidence: 99%