Question

An open-circuit wind tunnel draws in air from the atmosphere through a well-contoured
nozzle. In the test section, where the flow is straight and nearly uniform, a static pressure tap
is drilled into the tunnel wall. A manometer connected to the tap shows that static pressure
within the tunnel is 45mm of water below atmospheric. Assume that the air is incompressible,
and at 25C, 100kPa (abs). Calculate the air speed in the wind-tunnel test section.

Answer 1

Answer:

Answer

An open-circuit wind tunnel draws in air from the atmosphere through a well-contoured nozzle. In the test section, where the flow is straight and nearly uniform, a static pressure tap is drilled into the tunnel wall. A manometer connected to the tap shows that static pressure within the tunnel is 45mm of water below atmospheric. Assume that the air is incompressible, and at 25°C 100 kPa (abs). Calculate the air speed in the wind-tunnel test section.

Answer 2

Answer:

the air speed in the wind- tunnel test section is 27.45m/s