Viscosity is defined as the measurement of the resistance of a fluid to gradual deformation by shear or tensile stress. A shear stress will be developed as a fluid moves along the fluid mechanics system. There are severalcommon methods used to measure the viscosity such as viscometers or rheometers. A falling-ball viscometer as shown in Figure 1 is being used to measure the viscosity. A 0.35 cm diameter steel ball with a specific gravity of 7.7 is allowed to fall freely in a heavy fuel oil having specific gravity of 0.90. The ball is observed to fall 50 cm in 2 hours. i) Calculate the dynamic viscosity of the oil in Pa.s.
Viscosity is defined as the measurement of the resistance of a fluid to gradual deformation by shear or tensile stress. A shear stress will be developed as a fluid moves along the fluid mechanics system. There are severalcommon methods used to measure the viscosity such as viscometers or rheometers. A falling-ball viscometer as shown in Figure 1 is being used to measure the viscosity. A 0.35 cm diameter steel ball with a specific gravity of 7.7 is allowed to fall freely in a heavy fuel oil having specific gravity of 0.90. The ball is observed to fall 50 cm in 2 hours. i) Calculate the dynamic viscosity of the oil in Pa.s.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Transcribed Image Text:(c) Viscosity is defined as the measurement of the resistance of a fluid to gradual deformation
by shear or tensile stress. A shear stress will be developed as a fluid moves abng the fluid
mechanics system. There are severalcommon methods used to measure the viscosity such
as viscometers or rheometers. A falling-ball viscometer as shown in Figure 1 is being used
to measure the viscosity. A 0.35 cm diameter steel ball with a specific gravity of 7.7 is
allowed to fall freely in a heavy fuel oil having specific gravity of 0.90. The ball is
observed to fall 50 cm in 2 hours.
i) Caleulate the dynamie viscosity of the oil in Pa.s.
Fluid
sample
Falling
ball
Measured
distance
Figure 1
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