Find the initial mass flow rate out of the tank

Reference no: EM131238441

(Adv.) Develop a program that will track the process in time as described in Problems 15.51 and 15.53. Investigate the time it takes to bring the tank pressure to 125 kPa as a function of the size of the nozzle exit area. Plot several of the key variables as functions of time.

Problems 15.51

A 1-m³ insulated tank contains air at 1 MPa, 560 K. The air in the tank is now discharged through a small convergent nozzle to the atmosphere at 100 kPa. The nozzle has an exit area of 2 × 10^-5 m².

a. Find the initial mass flow rate out of the tank.

b. Find the mass flow rate when half of the mass has been discharged.

Problems 15.53

Air flows into a convergent-divergent nozzle with an exit area 2.0 times the throat area of 0.005 m². The inlet stagnation state is 1.2 MPa, 600 K. Find the back pressure that will cause a reversible supersonic exit flow with M = 1 at the throat. What is the mass flow rate?

Reference no: EM131238441

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