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An oil of viscosity 5 poise is used for lubrication between a shaft and sleeve. The diameter of the shaft is 0.5 m and it rotates at 200 rpm. Calculate the kW power lost in the oil for a sleeve length of 100 mm. The thickness of the oil film is 1.0 mm.

Question-Answer › Category: Fluid Mechanics › An oil of viscosity 5 poise is used for lubrication between a shaft and sleeve. The diameter of the shaft is 0.5 m and it rotates at 200 rpm. Calculate the kW power lost in the oil for a sleeve length of 100 mm. The thickness of the oil film is 1.0 mm.
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S gill asked 1 year ago

An oil of viscosity 5 poise is used for lubrication between a shaft and sleeve. The diameter of the shaft is 0.5 m and it rotates at 200 rpm. Calculate the kW power lost in the oil for a sleeve length of 100 mm. The thickness of the oil film is 1.0 mm.

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Sazid Ahmad answered 1 year ago

Given data:
Mechanical Engineering homework question answer, step 1, image 1

The shear stress can be determined as,
Mechanical Engineering homework question answer, step 2, image 1

The frictional torque can be determined as,
Mechanical Engineering homework question answer, step 3, image 1

The power lost can be determined as,
Mechanical Engineering homework question answer, step 4, image 1

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