Apparatus and method for viscosity measurements for Newtonian an

Details Apparatus and method for viscosity measurements for Newtonian an Apparatus and method for viscosity measurements for Newtonian an

1985-01-25

1987-01-20

Levy, Stewart J.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

73 54, G01N 1112

Patent

active

046372504

ABSTRACT:
The present invention relates to an apparatus and method for determining the viscosity of Newtonian and non-Newtonian fluids. More particularly, the present invention relates to an apparatus and method for determining the viscosity of a fluid by measuring the time of fall of a needle through a predetermined distance of the fluid held in a container. The method further provides exact equations according to a modified power law model and Ellis model for the calculation of viscosity, shear stress and shear rate.

REFERENCES:
patent: 2778220 (1957-01-01), Kuhlmann et al.
patent: 3231738 (1966-01-01), Danforth et al.
patent: 4388823 (1983-06-01), Garnaud et al.
patent: 4466275 (1984-08-01), Thone
patent: 4517830 (1985-05-01), Gunn et al.
J. B. Irving et al, An Automatic High Pressure Viscometer, J. Phys. E (GB), vol. 4, Mar. 1971.
Lohrenz, Swift and Kurata "The Experimentally Verified Theoretical Study of the Falling Cylinder Viscometer", A.I. Ch. E. Journal, vol. 6, No. 4, p. 547, (Dec. 1960).
Smith, "The Plunger Rheometer-Low of Flow for a Newtonian Fluid", J. of Inst. of Petrol., vol. 43, No. 404, pp. 227-230, (Aug. 1957).
F. J. Eichstadt and G. W. Swift "Theoretical Analysis of the Falling Cylinder Viscometer for Power Law and Bingham Plastic Fluids", A.I.Ch.E, vol. 12, No. 6, pp. 1179-1183, (1966).

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