Answered: Determine the kinematic viscosity…

Determine the kinematic viscosity (Stokes) of oil having the relative density as 0.87. The shear stress at a point in oil is 1.72 N/m2 and the velocity gradient at that point is 0.28 per second.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.

Question

Determine the kinematic viscosity (Stokes)
of oil having the relative density as 0.87.
The shear stress at a point in oil is 1.72
N/m2 and the velocity gradient at that point
is 0.28 per second.
Solution:
(i) Viscosity (in Ns/m²) =
%3D
(ii) Dynamic Viscosity (in poise) =
(iii) Mass density of oil (in kg/m³) =
%3D
iv) Kinematic viscosity (in stokes) =
%3D

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