| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Dependence of Nanofluid Viscosity on Particle Size and pH Value |
| ZHAO Jia-Fei, LUO Zhong-Yang, NI Ming-Jiang, CEN Ke-Fa |
| Institute for Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027 |
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| Cite this article: |
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ZHAO Jia-Fei, LUO Zhong-Yang, NI Ming-Jiang et al 2009 Chin. Phys. Lett. 26 066202 |
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Abstract We investigate the viscosity of silicon dioxide nanofluid at different particle sizes and pH values considering nanoparticle aggregation. The experimental and simulation results indicate that nanoparticle size is of crucial importance to the viscosity of the nanofluid due to aggregation. As the nanoparticle size decreases, the viscosity becomes much more dependent on the volume fraction. Moreover, when the nanoparticle diameter is smaller than 20nm, the viscosity is closely related to the pH of the nanofluid, and fluctuates with pH values from 5 and 7.
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| Keywords:
62.10.+s
83.85.Jn
51.20.+d
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Received: 14 January 2009
Published: 01 June 2009
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| PACS: |
62.10.+s
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(Mechanical properties of liquids)
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83.85.Jn
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(Viscosity measurements)
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51.20.+d
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(Viscosity, diffusion, and thermal conductivity)
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[1] Nguyen C T, Desgranges F, Roy G, Galanis N, Mare T,Boucher S and Mintsa H A 2007 Int. J. Heat Fluid Flow 281492
[2] Chon C H, Kilm K D, Lee S P and Choi 2005 Appl. Phys.Lett. 87 153107
[3] Putra N, Roetzel W and Das S K 2003 Heat MassTransfer 39 775
[4] Yang Y, Zhang Z G, Grulke E A, Andersen W B and Wu G 2005 Int. J. Heat Mass Transfer 48 1107
[5]. Prasher R, Song D and Wang J L 2006 Appl. Phys.Lett. 89 133108
[6] Buongiorno J 2006 J. Heat Transfer 128 240
[7] Mansour R B, Galanis N and Nguyen C T 2007 Appl.Therm. Eng. 27 240
[8] Degussa 2007 http://www.degussa.com/degussa/en/
[9] Potanin A A, Rooij De R, Ende D V D and Mellema J 1993 J. Chem. Phys. 99 9213
[10] Prasher R, Phelan P E and Bhattacharya P 2006 Nano.Lett. 6 1529
[11] Chow T S 1993 Phys. Rev. E 48 1977
[12] Rubio-hernandez F J, Ayucar-Rubio M F, Velazquez-NavarroJ F and Galindo-Rosales F J 2006 J. Colloid Interface Sci. 298 967 |
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