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Unformatted text preview: Q R(t) U P(t P o Lubricant film Lubricant reservoir L H 3. Liquid is being pumped from a reservoir through a cylindrical pipe of radius R by maintaining a pressure gradient of ( P 1-P 2 ) across the pipe ( P 1 > P 2 ). Derive expressions for conditions that will describe, on an order of magnitude scale, whether the flow is limited by gravity or viscosity. For each case, derive expressions that will describe the magnitude of ( P 1-P 2 ), on an order of magnitude scale, necessary for the liquid to flow in each case. Neglect surface tension. P 1 P 2 H...
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- Fall '10