Practice Exam 1-1 - Name_ #1 (10 points) Blood enters the...

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Name_________________________________________________ #1 (10 points) Blood enters the lungs from the pulmonary artery with a mean pressure of 15 mm Hg. After passage through the lungs, the blood returns to the left atrium through the pulmonary vein with a mean pressure of 2 mm Hg. Cardiac output is 5 L/min, and the diameters of the pulmonary artery and pulmonary vein are 2.5 cm and 3.0 cm, respectively. The density of blood is 1.056 g/cm 3 and the viscosity of blood is 3.0 cP. Calculate: A) (2 pts) The mass flow rate of blood, m = ___________________________ g/min B) (5 pts) The dimensionless Reynolds number ( μ ρ vD = Re ) in the pulmonary artery Re PA = _____________________________________________ and in the pulmonary vein Re PV =______________________________________________ Hint: The velocity, v , can be found using the definition of volumetric flow rate, Av V = , where the area, 2 4 D A π = . C) (3 pts) Consider the blood entering and leaving the lungs similar to fluid flowing through a cylindrical pipe. What must the height, h , of the column of fluid be if the pressure of the blood entering the lungs is defined as the hydrostatic pressure? h = ______________________________________________________ cm Additional information: 1 cP = 0.01 g/cm·s g = 980.66 cm/s 2 1 N = 10 5 g·cm/s 2 1 mm Hg = 0.0133 N/cm 2
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Name_________________________________________________ #2 (10 points) Solid calcium fluoride (CaF 2 ) reacts with sulfuric acid to form solid calcium sulfate and
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This note was uploaded on 05/01/2011 for the course CHBE 2100 taught by Professor Staff during the Fall '08 term at Georgia Institute of Technology.

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Practice Exam 1-1 - Name_ #1 (10 points) Blood enters the...

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