Gas Dynamics

Questions & Answers

(10 marks)Steam flows steadily through a turbine. The inlet conditions of the steam are 1000 kPa, 900 °C, 5 m/s, and 1.0 m, andthe exit conditions are 100 kPa, 88% steam quality, 650 m/s, and 180 m. The mass flow rate of the steam is 10 kg/s and is losing heat at a rate of 680 kJ/s. Determine the power output in MW.Problem 2:


(10 marks)A 0.040612 m3 tank contains 3.0 kg of water vapors at 373.95 °C. Determine the pressure of the water vapors in MPa,using: (a) The ideal-gas equation, (b) The generalized compressibility chart


3. This energy given to convert a liquid into a gas is called isheat.


If M2=2.5, then the range of M3 is greater than 1 and less than2.5 O TrueO False


a- For the Figure shown. Write Mach numbers in ascending order (5 points) b- Sketch T-S diagram to indicate all static and total properties at all sectionsshown in Figure. (10 points)


When the flow direction has slightly deflected the attached shock-wave is formed O TrueO False


An oil pump is drawing 35 kW of electric power while pumping oil with p= 860 kg/m³ at a rate of 0.1 m³/s. The inlet and outlet diameters of the pipe are 8 cm and 12 cm, respectively. If the pressure rise of oil in the pump is measured to be 400 kPa and the motor efficiency is 90 percent,determine the mechanical efficiency of the pump.


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