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A compressor is used to charge the supersonic wind tunnel air tanks at the Aerodynamics Research...
Problem 4 (15%) A supersonic wind tunnel operates with air at the total pressure Pt temperature...
Problem 4 (15%) A supersonic wind tunnel operates with air at the total pressure Pt temperature Te 420K, and Mach number M 2.0. 420kPa absolute, total a) (10%) Calculate the temperature and the pressure in the test section (where M 2.0 occurs). T1 = kPa (5%) if a normal shock wave occurs in the test section, calculate the temperature and pressure after the shock wave. b) kPa
A compressor is used to steadily compress Air which enters the compressor at a pressure of...
A compressor is used to steadily compress Air which enters the compressor at a pressure of 220 kPa, a temperature of 320 K, and a velocity of 8 m/s through an inlet with area of 0.13 m². The air exits the compressor at a pressure of 770 kPa, temperature is 490 K, and a of velocity is 4 m/s. The compressor consumes 430 kW of power. Assuming variable specific heats, find: A) The heat transfer during this process. B) The...
9) For the air wind tunnel shown above in Q8: (6 points) Assuming a circular cross...
9) For the air wind tunnel shown above in Q8: (6 points) Assuming a circular cross section, the atmospheric pressure is 101.325 kPa, density of air is 1.2 kg/m², and absolute viscosity of air is 1.825*10-Ns/m² (assume there are no losses in the wind tunnel) Contraction ratio: 7 Diffuser length: 3 m Test section diameter = test section length = 70 cm a) When a static-pitot tube placed in the test section with a manometer (manometer fluid is water with...
1. [20 pts] An indraft wind tunnel pulls air into an inlet, through a contraction, the...
1. [20 pts] An indraft wind tunnel pulls air into an inlet, through a contraction, the test section, and the diffuser, as shown below. The test section has a circular cross section and it has a diameter of 0.5 m. Assume the wind tunnel is at sea level and the temperature and pressure of the atmosphere are given by standard atmospheric conditions. (a) If the test section is designed to have a velocity of 200 m/s, determine the Mach number,...
(6) Gas Refrigeration Air is the working fluid of a Brayton refrigeration cycle with a compressor...
(6) Gas Refrigeration Air is the working fluid of a Brayton refrigeration cycle with a compressor pressure ratio of 3. At the beginning of the compression, the temperature Ti = 270 K and pressure P1 = 140 kPa. The turbine inlet temperature is T3 = 320 K. You may assume both heat exchangers operate without pressure losses. Draw a T-s diagram for this ideal cycle. If the volumetric flow rate at State 3 is 0.4 m3/s, what is the mass...
An air compressor used in a large car body shop is located in an inside equipment...
An air compressor used in a large car body shop is located in an inside equipment room. Fresh air at 5 ºC, 96 kPa is conveyed to the compressor from outside through a 30-cm circular duct that is 15-m long. The duct runs along the ceiling of the facility where the temperature is 34 ºC. If the air flow rate is 0.35 m3 /s, determine: a. the temperature of the air when it reaches the compressor (in ºC) b. the...
Air enters the compressor of a cold air-standard Brayton cycle with regeneration at 100 kPa, 300...
Air enters the compressor of a cold air-standard Brayton cycle with regeneration at 100 kPa, 300 K, with a volume flow rate of 5 m3/s. The compressor pressure ratio is 8, and the turbine inlet temperature is 1400 K. The turbine and compressor each have isentropic efficiencies of 80% and the regenerator effectiveness is 80%. For the air, k = 1.4 and the ambient temperature is T0 = 300 K. -Determine the thermal efficiency of the cycle. -determine the back...
8) (1 point) Honeycomb Flow Straightener -Anti-Turbulence Screens Silencer Diffuser Fan Test Section Inlet The wind...
8) (1 point) Honeycomb Flow Straightener -Anti-Turbulence Screens Silencer Diffuser Fan Test Section Inlet The wind tunnel shown above is; a) open circuit/suction/low speed wind tunnel b) open circuit/blow-down low speed wind tunnel c) closed circuit/suction/supersonic wind tunnel d) closed circuit/blow-down/supersonic wind tunnel 9) For the air wind tunnel shown above in Q8: (6 points) Assuming a circular cross section, the atmospheric pressure is 101.325 kPa, density of air is 1.2 kg/m², and absolute viscosity of air is 1.825*10-Ns/m² (assume...
8) (1 point) Honeycomb Flow Straightener -Anti-Turbulence Screens Silencer Fan Test Section Diffuser Inlet The wind...
8) (1 point) Honeycomb Flow Straightener -Anti-Turbulence Screens Silencer Fan Test Section Diffuser Inlet The wind tunnel shown above is; a) open circuit/suction/low speed wind tunnel b) open circuit/blow-down/low speed wind tunnel c) closed circuit/suction/supersonic wind tunnel d) closed circuit/blow-down/supersonic wind tunnel 9) For the air wind tunnel shown above in Q8: (6 points) Assuming a circular cross section, the atmospheric pressure is 101.325 kPa, density of air is 1.2 kg/m°, and absolute viscosity of air is 1.825*10-5 Ns/m² (assume...
A blow down supersonic wind tunnel has a test section area of 0.2 m2 and a design Mach number of 2.5. The pressure and temperature in the high pressure air tank is 50 MPa and 400 K. Ignore all losses...
A blow down supersonic wind tunnel has a test section area of 0.2 m2 and a design Mach number of 2.5. The pressure and temperature in the high pressure air tank is 50 MPa and 400 K. Ignore all losses between the high pressure tank and the test section. a) Estimate the throat area of the nozzle. b) Estimate the static pressure and static temperature in the test section. c) Estimate the required gas temperature in the high pressure tank...
Problem 4 (15%) A supersonic wind tunnel operates with air at the total pressure Pt temperature Te 420K, and Mach number M 2.0. 420kPa absolute, total a) (10%) Calculate the temperature and the pressure in the test section (where M 2.0 occurs). T1 = kPa (5%) if a normal shock wave occurs in the test section, calculate the temperature and pressure after the shock wave. b) kPa
A compressor is used to steadily compress Air which enters the compressor at a pressure of 220 kPa, a temperature of 320 K, and a velocity of 8 m/s through an inlet with area of 0.13 m². The air exits the compressor at a pressure of 770 kPa, temperature is 490 K, and a of velocity is 4 m/s. The compressor consumes 430 kW of power. Assuming variable specific heats, find: A) The heat transfer during this process. B) The...
9) For the air wind tunnel shown above in Q8: (6 points) Assuming a circular cross section, the atmospheric pressure is 101.325 kPa, density of air is 1.2 kg/m², and absolute viscosity of air is 1.825*10-Ns/m² (assume there are no losses in the wind tunnel) Contraction ratio: 7 Diffuser length: 3 m Test section diameter = test section length = 70 cm a) When a static-pitot tube placed in the test section with a manometer (manometer fluid is water with...
1. [20 pts] An indraft wind tunnel pulls air into an inlet, through a contraction, the test section, and the diffuser, as shown below. The test section has a circular cross section and it has a diameter of 0.5 m. Assume the wind tunnel is at sea level and the temperature and pressure of the atmosphere are given by standard atmospheric conditions. (a) If the test section is designed to have a velocity of 200 m/s, determine the Mach number,...
(6) Gas Refrigeration Air is the working fluid of a Brayton refrigeration cycle with a compressor pressure ratio of 3. At the beginning of the compression, the temperature Ti = 270 K and pressure P1 = 140 kPa. The turbine inlet temperature is T3 = 320 K. You may assume both heat exchangers operate without pressure losses. Draw a T-s diagram for this ideal cycle. If the volumetric flow rate at State 3 is 0.4 m3/s, what is the mass...
8) (1 point) Honeycomb Flow Straightener -Anti-Turbulence Screens Silencer Diffuser Fan Test Section Inlet The wind tunnel shown above is; a) open circuit/suction/low speed wind tunnel b) open circuit/blow-down low speed wind tunnel c) closed circuit/suction/supersonic wind tunnel d) closed circuit/blow-down/supersonic wind tunnel 9) For the air wind tunnel shown above in Q8: (6 points) Assuming a circular cross section, the atmospheric pressure is 101.325 kPa, density of air is 1.2 kg/m², and absolute viscosity of air is 1.825*10-Ns/m² (assume...
8) (1 point) Honeycomb Flow Straightener -Anti-Turbulence Screens Silencer Fan Test Section Diffuser Inlet The wind tunnel shown above is; a) open circuit/suction/low speed wind tunnel b) open circuit/blow-down/low speed wind tunnel c) closed circuit/suction/supersonic wind tunnel d) closed circuit/blow-down/supersonic wind tunnel 9) For the air wind tunnel shown above in Q8: (6 points) Assuming a circular cross section, the atmospheric pressure is 101.325 kPa, density of air is 1.2 kg/m°, and absolute viscosity of air is 1.825*10-5 Ns/m² (assume...
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