Experimental and Theoretical Investigations on the Oscillating Cylinder Viscometer for Non-Elastic Liquids

概要

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A new and exact theory of the oscillating cylinder viscometer is gjven for non-elastic liquids. By introducing into the final solution adimensionless parameter defined by: √<2>Ba=x where the symbols have their usual significance and x may take any value, the following expression is obtained. │<θ_0>/<φ_0>│=<A´n^4>/<B´+C´n^2+D´n^4> where A´, B´, C´ and D´are constants and whose values depend on: - i-The density of the liquid under study. ii-The constants of the apparatus used. iii-The numerical value of x chosen. The theoretical curve representing the previous expression satisfies the experimental curve in one point(n_δ, ψ_ε) at which they intersect. Hence, by substituting the value of x chosen and the value of n_δ obtained in the following equation, η=<2πa^2>/x^2>・ρn_δ the value of η is determined. Experiments have been carried out on shell motor oil X-100-60, shell motor oil X-100-50, shell motor oil X-100-40, glycerine, caster oil, pump oil, and paraffin oil. The results obtained confirm the vailidity of the theory and method.
社団法人日本物理学会の論文
1957-11-05