# 2 - ChE 311 | Assignment#1 | Joey Heraldez 1 1.2 Units...

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ChE 311 | Assignment #1 | Joey Heraldez 1) 1.2 Units conversion—E . The viscosity μ of an oil is 10 cP and its specific gravity s is 0.8. Reexpress both of these (the latter as density ρ ) in both the lbm, ft, s system and in SI units. 2) 1.5 Reynolds number—E . What is the mean velocity um (ft/s) and the Reynolds number Re = ρumD/ μ for 35 gpm (gallons per minute) of water flowing in a 1.05-in. I.D. pipe if its density is ρ = 62.3 lbm/ft3 and its viscosity is μ = 1.2 cP? What are the units of the Reynolds number? 3) 1.7 Reservoir waterflooding—E. If the water and oil are just starting to move, what water inlet pressure pw is needed if the oil exit pressure is to be po ? Assume that the oil completely wets the pore ( not always the case), that the water/oil interfacial tension is σ, and that the densities of the water and oil are ρω and ρo , respectively.

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4) 1.10 Differential manometer—E If an additional small volume υ 2 of the second liquid is added to the right-hand leg, derive an expression—in terms of ρ 1, ρ 2, υ 2, d 1, and d
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