Oil used to lubricate the surfaces of a rotating bearing behaves such that viscous dissipation is...
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Oil used to lubricate the surfaces of a rotating bearing behaves such that viscous dissipation is not negligible. The properties of the oil are assumed to be constant. The problem can be modelled as a fluid between two infinitely long flat plates (one at position y=0 and the other at position y=H), where one is stationary and the other moves parallel to it in the x-direction at a constant velocity. The plates are both held at constant temperatures, but one plate is hotter than the other. For a developed part of the flow with negligible pressure gradients, which of the following statements are correct (there may be multiple correct answers)? The velocity of the fluid is constant. The relevant form of the energy equation is u The temperature profile is polynomial. The temperature of the fluid is a constant. The velocity profile is polynomial. The velocity of the oil varies in two dimensions. The temperature profile is linear. d The relevant form of the energy equation is + dy dt =0 du The velocity profile is linear. 2 2 + k dy k T =0 = pc u P T Oil used to lubricate the surfaces of a rotating bearing behaves such that viscous dissipation is not negligible. The properties of the oil are assumed to be constant. The problem can be modelled as a fluid between two infinitely long flat plates (one at position y=0 and the other at position y=H), where one is stationary and the other moves parallel to it in the x-direction at a constant velocity. The plates are both held at constant temperatures, but one plate is hotter than the other. For a developed part of the flow with negligible pressure gradients, which of the following statements are correct (there may be multiple correct answers)? The velocity of the fluid is constant. The relevant form of the energy equation is u The temperature profile is polynomial. The temperature of the fluid is a constant. The velocity profile is polynomial. The velocity of the oil varies in two dimensions. The temperature profile is linear. d The relevant form of the energy equation is + dy dt =0 du The velocity profile is linear. 2 2 + k dy k T =0 = pc u P T
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In the given scenario we are dealing with a case of viscous fluid flow with heat transfer between two parallel plates where one plate is stationary and the other moves with a constant velocity Here ar... View the full answer
Related Book For
Fundamentals Of Momentum Heat And Mass Transfer
ISBN: 9781118947463
6th Edition
Authors: James Welty, Gregory L. Rorrer, David G. Foster
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