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fruitstreet
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"A two-dimensional structure is tested in a wind tunnel with an air density of 1 kg/m3. The wind tunnel is 1 m high, with upstream and downstream pressures of 1.5 kPa gage (i.e. above atmospheric) and 1 kPa gage respectively. If the mean velocity of the entering air is 30 m/s and the downstream velocity profile is as shown below, what is the drag per unit length of the structure? Neglect wind tunnel wall shear stress."
The object in the wind tunnel is a two-dimensional hexagon with an undefined length. I understand that Fd=Cd(rho)(V^2)A/2. I'm getting hung up on having a 1 dimensional area, and if I simply apply that equation then I'm not using the given pressures.
Any ideas? Thanks in advance.
The object in the wind tunnel is a two-dimensional hexagon with an undefined length. I understand that Fd=Cd(rho)(V^2)A/2. I'm getting hung up on having a 1 dimensional area, and if I simply apply that equation then I'm not using the given pressures.
Any ideas? Thanks in advance.