Determination of Viscosity of Liquids

Authors(1) :-Mohammed Nasiru Bello

Viscosity of fluid plays an important roles in fluid characterization, fluid transfer and quality control. This study aim at determination of viscosity of two Newtonian fluids (Glycerine and Engine oil) using falling sphere viscometer. In this method, two steels balls (small and big steels balls) and two Newtonian fluids (Glycerine and Engine oil) were used to analysed the results of the study. The density of both fluids, density of both steels balls, acceleration due to gravity, radius of the steel balls and the velocity of both steels balls are essential in the determination of the dynamic and the kinematic viscosity of both fluids. The density of each steel balls was calculated using the formula, density=mass/volume, the mass of each balls was determined with the aids of a weighing balance and the volume of each steel balls was determined using the formula, V=πr3, where r is the radius of the balls which is half of the diameter. The diameters of each steels balls was determined using a vernier caliper. The density of the fluids was also determined using the relation, density=mass/volume. The mass and the volume of each fluid were also determined using the weighing balance and a graduated measuring cylinders respectively. The velocity of each steel ball was calculated using the formula, velocity= distance travel by the steel ball through their respective fluid columns per unit travelled time. The acceleration due to gravity is 9.8m/s2. The results of the study show that the Glycerine is more viscous with viscosity of 14.572 and 33.265poise than the Engine oil with viscosity of 7.24 and 18.629poise. The Reynolds numbers were also computed and were found to be less than unity which shows the validity of the experimental results. This method of viscosity measurement is only suitable for Newtonian fluids.

Authors and Affiliations

Mohammed Nasiru Bello
Petroleum Engineering Department, Abubakar Tafawa Balewa University Bauchi, Bauchi State, Nigeria

Newtonian Fluids, Dynamic Viscosity, Kinematic Viscosity, Falling Sphere Viscometer, Reynolds Number, Fluid Velocity, Density, Steel Ball.

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Publication Details

Published in : Volume 4 | Issue 10 | September-October 2018
Date of Publication : 2018-10-30
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 379-384
Manuscript Number : IJSRST1841062
Publisher : Technoscience Academy

Print ISSN : 2395-6011, Online ISSN : 2395-602X

Cite This Article :

Mohammed Nasiru Bello, " Determination of Viscosity of Liquids", International Journal of Scientific Research in Science and Technology(IJSRST), Print ISSN : 2395-6011, Online ISSN : 2395-602X, Volume 4, Issue 10, pp.379-384, September-October-2018.
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