Question

(1) Medium lubricating oil, spgr 0.860, is pumped through 300 m of horizontal 50. J0-min pipe at the rate of 0.00140 m/s. If the drop in pressure is 200 kPa, what is the coefficient of viscosity of the oil? (2) A wide moving belt passes through a container of a viscous liquid. The belt moves vertically upward with a constant velocity, Vo, as illustrated in Fig: [. Because of viscous forces, the belt picks up a film of fluid of thickness h. Gravity tends to make the fluid drain down on the belt. Determine an expression for the average velocity of the fluid film as it is dragged up the belt. Assume that the flow is laminar, steady, and uniform.

          (1) Medium lubricating oil, spgr 0.860, is pumped through 300 m of horizontal 50. J0-min pipe at the rate of 0.00140 m/s. If the drop in pressure is 200 kPa, what is the coefficient of viscosity of the oil?
(2) A wide moving belt passes through a container of a viscous liquid. The belt moves vertically upward with a constant velocity, Vo, as illustrated in Fig: [. Because of viscous forces, the belt picks up a film of fluid of thickness h. Gravity tends to make the fluid drain down on the belt. Determine an expression for the average velocity of the fluid film as it is dragged up the belt. Assume that the flow is laminar, steady, and uniform.

Added by Montserrat M.

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