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  3. bime2223 applied fluid mechanics qnestion 4 a in figure q4...

Question: bime2223 applied fluid mechanics qnestion 4 a in figure q4...

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BIME2223 APPLIED FLUID MECHANICS Qnestion 4 a) In Figure Q4, air enters a Laval nozzle at 1.0 MPa of absolute pressure and 800 K with a negligible velocity. The flow is steady one-dimensional, and isentropic with γ = 1.4. If the Mach number at exit and throat area are 2.0 and 20 cm, respectively, determine: = 1 MPa 70 800 K R 287 J/kgK Ma,-2.0 γ= 1.4 20 cm2 Figure Q4 i) the throat properties (pressure, density, temperature and velocity), ii) the exit plane properties (pressure, density, temperature and velocity), and ili) the mass flow rate through the nozzle. 6 marks) 4 marks) (3 marks) b) If the Laval nozzle in Question 4 a) experiences a normal shock wave at the exit plane, determine the following after the shock wave: i) the pressure, temperature, and density, i) the velocity, and ii) the mass flow rate through the nozzle. 5 marks) (2 marks) (1 marks) c) Compare and comment the results in Question 4 a) and b). (4 marks) Total: 25 marks] The following equations may be used where appropriate without proof Y-1 γ+1 P2 Y+ 1 T, +1)2Mai ท่า Pi Ma2 = Ma2)-1) This question paper consists of 4 questions on 6 printed pages

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