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An engineer is designing a subsonic wind tunnel. The testsection is to have a cross-sectional area of 4m2 and anairspeed of 60m/s. The air density is 1.2kg/m3. the areaof the tunnel exit is 10m2. The head loss through thetunnel is given by hL =(0.025)*(VT2/2g), whereVT is the airspeed in the test section.Calculate the power needed to operate the wind tunnel.Hint: assume negligible energy loss for the flowapproaching the tunnel, and assume atmospheric pressure at theoutlet section of the tunnel. Assume α=1.0 at alllocations.
Also, the propellor is situated at the end of the tunnel wherethe area is 10 m2 (rigth before the tunnelis opened to the atmosphere). So I used the energyequation, but I have two unknows: pressure P of thetest section, and the shaft work hT orhP (I am not sure if it is a pump or aturbine).
Setam with a quality of 95% is present at 200 degrees F. What are the pressure and enthalpy values for this point
A truck is designed to measure concrete roughness. During a typical test the driver will bring the vehicle to a constant test velocity, v, and then suddenly lock the brakes bringing the vehicle to a complete stop.
A tank is divided into two equal chambers by an internal diaphragm. One chamber containes methane at a pressure of 500 bar and a temperature of 20 C, and the other chamber is evacuated.
What is the capacity of the pump required to supply maximum required discharge to the model, in CFS The length of time the model must be operated to check the equivalent of 36 hours of operation for the prototype operation, in decimal format hours..
Explain how the presence of the collimation error, e, can be detected in a "Two Peg Test" operation.
The stream from a gas well is a mixture containing 50 mol % methane, 10 mol % ethane, 20 mol % propane, and 20 mol % n-butane. This stream is fed into a partial conderser maintained at a pressure of 250 psia
Water at 120 celcius with a quality of 25 % has its temperature raised 20 celcius in a constant volume process. What is the new quality and pressure? Draw P-v and T-s diagrams.
It has been determined that the steady-state diffusion flux of a gas molecule through a solid metal plate is 5*10^-8 kg/m^2*s at a temperature of 1000K, and a concentration gradient of -300 kg/m^4.
Design a 300 + sl m long variable graded terrace for a land having an average slope of 2 %. Maximum permissible velocity of water in the terrace channel is 60 cm/sec.
The following wind conditions are expected: V = 10 i - 5 j mph for 0 10 hr. Draw to scale the expected streakline of the stream for t = 3, 10, and 15 hr.
identical bricks 0.1m wide and weighting 2kg are placed on a plate assume the plate has neligible weight. calculate the
a 1 1.8 4.5 mix has a watercement ratio of 0.6 and a cement content of 300 kgm3. the temperature of the ingredients
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