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D.C. Venerus, J. Buongiorno, R. Christianson, J. Townsend, I.C. Bang, G. Chen, S.J. Chung, M. Chyu, H. Chen, Y. Ding, F. Dubois, G. Dzido, D. Funfschilling, Q. Galand, J. Gao, H. Hong, M. Horton, Lin-wen Hu, C.S. Iorio, A.B. Jarzebski, Y. Jiang, S. Kabelac, M.A Kedzierski, C. Kim, Ji-Hyun Kim, S. Kim, T. McKrell, R. Ni, J. Philip, N. Prabhat, P. Song, S. Van Vaerenbergh, D. Wen, S. Witharana, Xiao-Zheng Zhao, Sheng-Qi Zhou
Viscosity measurements on colloidal dispersions (nanofluids) for heat transfer applications

Appl. Rheol. 20:4 (2010) 44582 (7 pages)

This article reports viscosity data on a series of colloidal dispersions collected as part of the International Nanofluid Property Benchmark Exercise (INPBE). Data are reported for seven different fluids that include dispersions of metal-oxide nanoparticles in water, and in synthetic oil. These fluids, which are also referred to as 'nanofluids,' are currently being researched for their potential to function as heat transfer fluids. In a recently published paper from the INPBE study, thermal conductivity data from more than 30 laboratories around the world were reported and analyzed. Here, we examine the influence of particle shape and concentration on the viscosity of these same nanofluids and compare data to predictions from classical theories on suspension rheology.

Cite this publication as follows:
Venerus DC, Buongiorno J, Christianson R, Townsend J, Bang I, Chen G, Chung S, Chyu M, Chen H, Ding Y, Dubois F, Dzido G, Funfschilling D, Galand Q, Gao J, Hong H, Horton M, Hu L-W, Iorio CS, Jarzebski AB, Jiang Y, Kabelac S, Kedzierski MA, Kim C, Kim J-H, Kim S, McKrell T, Ni R, Philip J, Prabhat N, Song P, VanVaerenbergh S, Wen D, Witharana S, Zhao X-Z, Zhou S-Q: Viscosity measurements on colloidal dispersions (nanofluids) for heat transfer applications, Appl. Rheol. 20 (2010) 44582.

David C. Venerus
Free Surface Effects on Normal Stress Measurements in Cone and Plate Flow

Appl. Rheol. 17:3 (2007) 36494 (6 pages)

The effects of free surface shape on normal stress difference measurements in cone and plate flow are investigated. The analysis shows that the stress field is significantly altered by deviations of the free surface from an ideal (spherical) shape. For the cone and partitioned plate technique, it is shown how modest deviation from a spherical free surface shape can lead to errors of roughly 10% in the measured normal stress differences.

Cite this publication as follows:
Venerus DC: Free Surface Effects on Normal Stress Measurements in Cone and Plate Flow, Appl. Rheol. 17 (2007) 36494.

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