Rheological Property and Thermal Conductivity of Multi-walled Carbon Nano-tubes-dispersed Non-Newtonian Nano-fluids Based on an Aqueous Solution of Carboxymethyl Cellulose

Tian, Jingyang; He, Zhiguo; Xu, Tao; Fang, Xiaoming; Zhang, Z.

doi:10.1080/08916152.2014.1001919

Cited by 7 publications

(2 citation statements)

References 44 publications

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“…The flow behavior index for fluid has been obtained using intercepts and slopes of the fitted lines (Shakouri et al 2015;Tian et al 2016) as displayed in Fig. 2 and the consistency index is calculated by Brinkman equation (Brinkman 1952) as shown in Fig.…”

Section: Physical Properties Of Nanofluidmentioning

confidence: 99%

Interaction of aluminum oxide nanoparticles with flow of polyvinyl alcohol solutions base nanofluids over a wedge

Hassan¹,

Faisal

Bhatti

2018

Appl Nanosci

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Polyvinyl alcohol (PVA) is an important industrial chemical, which is used in numerous chemical engineering applications. It is important to study and predict the flow behavior of PVA solutions and the role of nanoparticles in heat transfer applications to be used in chemical processes on industrial scale. Therefore, the present study deals with the PVA solution-based non-Newtonian Al 2 O 3 -nanofluid flow along with heat transfer over wedge. The power-law model is used for this nonNewtonian nanofluid which exhibited shear-thinning behavior. The influences of PVA and nanoparticles concentrations on the characteristics of velocity and temperature profiles are examined graphically. The impacts of these parameters on wall shear stress and convective heat transfer coefficient are also studied through tabular form. During the numerical computations, the impacts of these parameters on flow index and consistency index along with other physical properties of nanofluid are also considered. In this study, we found an improvement in heat transfer and temperature profile of fluid by distribution of Al 2 O 3 nanoparticles. It is also noticed that resistance between adjacent layers of moving fluid is enhanced due to these nanoparticles which leads to decline in velocity profile and increases in shear stress at wall.

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Section: Physical Properties Of Nanofluidmentioning

confidence: 99%

Interaction of aluminum oxide nanoparticles with flow of polyvinyl alcohol solutions base nanofluids over a wedge

Hassan¹,

Faisal

Bhatti

2018

Appl Nanosci

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show abstract

“…To overcome the aforementioned disadvantages existing in non-Newtonian fluids, nanoparticles are added and form non-Newtonian nanofluids, whose thermophysical properties are improved. Tian et al [22] dispersed MWCNTs into an aqueous solution of carboxymethyl cellulose at a weight fraction of 3 wt % and obtained non-Newtonian nanofluids with 0.1 wt %, 0.5 wt %, 1 wt %, and 2 wt % MWCNTs. Results indicated that the thermal conductivity of all the nanofluids is higher than that of the base liquid and the thermal conductivity enhancement is as high as 14.6% for the nanofluid containing 2 wt % MWCNTs.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation on Non-Newtonian Nanofluids Flowing in Shell Side of Helical Baffled Heat Exchanger Combined with Elliptic Tubes

Ling

et al. 2017

Applied Sciences

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Abstract:In this paper, an aqueous solution of xanthan gum (XG) at a weight fraction as high as 0.2% was elected as the non-Newtonian base liquid, the multi-walled carbon nanotubes (MWCNTs) dispersed into non-Newtonian XG aqueous at different weight factions of MWCNTs was prepared. Convection heat transfer of non-Newtonian nanofluids in the shell side of helical baffled heat exchanger combined with elliptic tubes has been investigated experimentally and numerically using single-phase flow model. Results showed that the enhancement of the convective heat transfer coefficient increases with an increase in the Reynolds number and the nanoparticle concentration. For nanofluids with 0.2 wt %, 0.5 wt % and 1.0 wt % MWCNTs, the Nusselt number, respectively, increases by 11%, 21% and 35% on average at the same Reynolds number, while the comprehensive thermal performance factors are 3%-5%, 15%-17% and 24%-26% higher than that of base fluid at the same volume rate. A remarkable heat transfer enhancement can be obtained by adding MWCNTs into XG aqueous solution based on thermal resistance analysis. Correlations have been suggested for the shell-side Nusselt number and friction factor of non-Newtonian nanofluids in the helical baffled heat exchanger with elliptic tubes. Good agreements existed between corrections and experimental data.

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Experimental investigation of heat transfer and pressure drop characteristics of non-Newtonian nanofluids flowing in the shell-side of a helical baffle heat exchanger with low-finned tubes

Tan

et al. 2017

Heat Mass Transfer

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Rheological Property and Thermal Conductivity of Multi-walled Carbon Nano-tubes-dispersed Non-Newtonian Nano-fluids Based on an Aqueous Solution of Carboxymethyl Cellulose

Cited by 7 publications

References 44 publications

Interaction of aluminum oxide nanoparticles with flow of polyvinyl alcohol solutions base nanofluids over a wedge

Interaction of aluminum oxide nanoparticles with flow of polyvinyl alcohol solutions base nanofluids over a wedge

Experimental and Numerical Investigation on Non-Newtonian Nanofluids Flowing in Shell Side of Helical Baffled Heat Exchanger Combined with Elliptic Tubes

Experimental investigation of heat transfer and pressure drop characteristics of non-Newtonian nanofluids flowing in the shell-side of a helical baffle heat exchanger with low-finned tubes

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