Exam3-Fall2008-Spring2010-Combined

Exam3-Fall2008-Spring2010-Combined - EGN3353C Fluid...

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NAME:__________________________________ SECTION:_________ UFID:________-________ INSTRUCTIONS: Closed book, closed notes, calculator and provided formula table allowed Clearly state any assumptions and show derivations 1. (10 points) Air with a static pressure of 0.9 MPa, a static temperature of 400 K, and a velocity of 100 m/s enters a converging nozzle whose minimum area is 0.001 m 2 . Assuming isentropic flow and a back pressure of 0.1 MPa, calculate (a) the mass flow rate, (b) the exit velocity, (c) and the exit Mach number. Continue with your answer on the back of this page if necessary. EGN3353C Fluid Mechanics Fall 2008 Exam 3 1 of 3
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100 °C. If the exit area of the nozzle is 3.5 times the throat area, what must the back pressure be to produce a normal shock wave at the exit plane of the nozzle? Continue with your answer on the back of this page if necessary.
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Exam3-Fall2008-Spring2010-Combined - EGN3353C Fluid...

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