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Showing papers by "Thomas F. Irvine published in 1997"


Journal ArticleDOI
TL;DR: In this article, a coaxial cylinder apparatus with a rotating outer cylinder was used to establish the velocity field in the test fluid, and the experimental water data agreed within 1% of literature values, and there was no effect of outer cylinder rotation.

44 citations


Journal ArticleDOI
TL;DR: In this article, the viscosity measurements of four Carbopol solutions at various temperatures and concentrations show shear thinning effects, however, an unexpected viscoity-temperature behavior according to the concentrations of carbopol solutions has been found.
Abstract: The viscosity measurements of four Carbopol solutions at various temperatures and concentrations show shear thinning effects. However, an unexpected viscosity-temperature behavior according to the concentrations of Carbopol solutions has been found. The viscosities of 3500 and 5000 wppm of Carbopol solutions decreased with increasing temperature. However, the viscosities of the 7500 and 10 000 wppm solutions increased with increasing temperature.

13 citations


Journal ArticleDOI
TL;DR: The falling needle density meter/viscometer (FNDV) as mentioned in this paper consists of a vertical cylinder which is filled with the test sample, using a needle launcher at the top of the cylinder, the first needle having a known density is allowed to fall through the liquid in the cylinder.

9 citations