# Sheet2.pdf - Assignment#2 Isentropic Flow 1 What will the...

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Assignment #2 - Isentropic Flow 1) What will the pressure and the temperature that air attains be if it is stagnated isentropically from M = 4, T = 50C and P = 0.1 atm.? 2) An air stream, having a pressure of 40 MPa and Mach number of 0.5, is isentropically decelerated to a Mach number of 0.2. Determine the change in static pressure and area ratio required to achieve this. 3) Air with a stagnation pressure of 1000 kPa and a stagnation temperature of 360 K enters a convergent nozzle having an exit area of 500 mm2. Determine the mass flow rate for back pressures of 800 kPa, 528 kPa and 300 kPa. Assume isentropic flow. 4) The pressure and the temperature at entry of a nozzle are 143 kPa and 60C, the exit pressure is 107 kPawhen the entry Mach number is 0.4. Determine the following: a- The velocity and temperature at exit. b- Rate of flow per unit area exit. c- Rate of flow as percentage of choked flow. 5) A perfect gas (k = 1.4, R = 284 J/kg K) is supplied to a converging nozzle at low velocity and 707 kPa and 300
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