Maximum temperature in a lubricant, oil is acting as a lubricant for a pair of cylindrical surfaces
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Maximum temperature in a lubricant, oil is acting as a lubricant for a pair of cylindrical surfaces such as those shown in Fig. 10.4-1. The angular velocity of the outer cylinder is 7908 rpm. The outer cylinder has a radius of 5.06 cm, and the clearance between the cylinders is 0.027 cm. What is the maximum temperature in the oil if both wall temperatures are known to be 158°F? The physical properties of the oil are assumed constant at the following values:
Viscosity 92.3 cp
Density 1.22 g/cm3
Thermal conductivity 0.055 cal/s ∙ cm ∙ C
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