Question

In: Civil Engineering

Air is flowing in a 1.5 m2 wind tunnel at 200 m/s at a pressure of...

Air is flowing in a 1.5 m2 wind tunnel at 200 m/s at a pressure of 250kPa, and temperature of 20°C at the entrance. Calculate:

(i) Mach number

(ii) Total Temperature

(iii) Total Pressure

(iv) Mass flow rate of air.

Solutions

Expert Solution

i) Mach number- It is the ratio of local flow velocity to speed of sound in given number.

theredore, M(mach number)=v/c

M=200/340 ; c= velocity of sound (at 20 degrees)= 340m/s

M=0.588

#answers of question ii), iii) and iv) are given in following images:

---

P.S> If you liked my answer then please give me an upvote. Thank you in advance :)


Related Solutions

A sheet of metal of 2 m ´ 2 m and 1.5 mm thickness is being tested in a wind tunnel.
A sheet of metal of 2 m ´ 2 m and 1.5 mm thickness is being tested in a wind tunnel. a. Calculate the critical velocity, in m/s, at which the boundary layer will remain laminar. b. For an upstream velocity of 35 m/s, what percentage of the metal sheet surface will have a laminar boundary layer. c. For each of the previous cases (all laminar B.L and mixed laminar/turbulent B.L), calculate the drag force on the plate, in N....
A wing-body model is tested in a wind tunnel with a flow of 100 m/s at...
A wing-body model is tested in a wind tunnel with a flow of 100 m/s at standard sea-level conditions. The wing area is 1.5 m^2 and the mean aerodynamic chord length is 0.45 m. Measurements of lift force, L, and moment about the center of gravity, MCG are made using the wind tunnel force balance. The lead mass is removed and a horizontal tail without an elevator is added to the model. The distance from the airplane center of gravity...
Fluid (air) enters a nozzle at 150 m/s, 26.85 oC, and at a pressure of 200...
Fluid (air) enters a nozzle at 150 m/s, 26.85 oC, and at a pressure of 200 kPa. Assuming isentropic flow, evaluate the temperature and pressure of the fluid at a location where the speed of fluid equals the speed of sound. What is the ratio of the area at this location to the entrance area?
Consider an airfoil in a high-­?speed wind tunnel. At the minimum-­?pressure point on the wing, the...
Consider an airfoil in a high-­?speed wind tunnel. At the minimum-­?pressure point on the wing, the velocity is 900 ft/s. If the test section flow velocity is 750 ft/s at standard sea-­? level conditions: a) Calculate the pressure coefficient at this point on the wing. b) Calculate the critical pressure coefficient corresponding to this flight condition. c) Comparing your answers from parts (a) and (b), what conclusion can you make as to the nature of the flow over the wing?...
Consider an airfoil in a high-­?speed wind tunnel. At the minimum-­?pressure point on the wing, the...
Consider an airfoil in a high-­?speed wind tunnel. At the minimum-­?pressure point on the wing, the velocity is 900 ft/s. If the test section flow velocity is 750 ft/s at standard sea-­? level conditions: a) Calculate the pressure coefficient at this point on the wing. b) Calculate the critical pressure coefficient corresponding to this flight condition. c) Comparing your answers from parts (a) and (b), what conclusion can you make as to the nature of the flow over the wing?...
Water flowing along a horizontal pipe has a speed of 2.31 m/s and a pressure of...
Water flowing along a horizontal pipe has a speed of 2.31 m/s and a pressure of 4.25 atm. Further along, the pipe narrows so that the cross-sectional area decreases by a factor of 6.17. What is the pressure in the narrow section?
Assume that we wish to design a Mach 10 hypersonic wind tunnel using air as the...
Assume that we wish to design a Mach 10 hypersonic wind tunnel using air as the test medium. We want the static pressure and temperature in the test stream to be that for a standard altitude of 55 km. Calculate (a) the exit-to-throat area ratio, (b) the required reservoir pressure (in atm), (c) the required reservoir temperature, and (d) the exit velocity. What do these results tell you about the special (and sometimes severe) operating requirements for a hypersonic wind...
If a gas is flowing at 300m/s and has a pressure and temperature of 90kPa and...
If a gas is flowing at 300m/s and has a pressure and temperature of 90kPa and 20°C, find the maximum possible velocity that could be generated by expansion of this gas if the gas is air and if it is helium
Air at 1 atm flowing at a rate of 0.1 kg / s has to be...
Air at 1 atm flowing at a rate of 0.1 kg / s has to be cooled from 400 to 300K in a tube of 10 cm in diameter with a uniform wall temperature of 250 K. Determine the length of the tube.
A water tunnel is mined through a mudstone rock mass at a depth of 200 m....
A water tunnel is mined through a mudstone rock mass at a depth of 200 m. The rock mass consists of three fracture sets. One set is the bedding planes; these are highly weathered, slightly rough surfaces and are continuous with an orientation of 180/10. The first number is the dip direction which is an azimuth measure from the North. Dip direction is measured 90° clockwise from the strike. The second number is the dip. The second set of fractures...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT