Question

Consider a low-speed wind tunnel as shown in the figure with a constant width of 2 m throughout its length, i.e., each cross section of the tunnel is a rectangle of width 2 m). The airflow velocity in the test section is 140 mph. The wind tunnel has a diffuser that is slightly rounded at the inlet to avoid undesirable flow separation caused by a sharp corner at the inlet in subsonic flow. It then diverges with straight upper and lower walls, each at a certain angle relative to the horizontal. The entrance and exit heights of the diffuser are 0.5 and 3.5 m, respectively. What are the flow velocities at the entrance and exit of the diffuser? (Round the final answers to two decimal places.)

          Consider a low-speed wind tunnel as shown in the figure with a constant width of 2 m throughout its length, i.e., each cross section of the tunnel is a rectangle of width 2 m). The airflow velocity in the test section is 140 mph. The wind tunnel has a diffuser that is slightly rounded at the inlet to avoid undesirable flow separation caused by a sharp corner at the inlet in subsonic flow. It then diverges with straight upper and lower walls, each at a certain angle relative to the horizontal. The entrance and exit heights of the diffuser are 0.5 and 3.5 m, respectively. What are the flow velocities at the entrance and exit of the diffuser? (Round the final answers to two decimal places.)

Consider a low-speed wind tunnel as shown in the figure with a constant width of 2 m throughout its length, i.e., each cross section of the tunnel is a rectangle of width 2 m). The airflow velocity in the test section is 140 mph. The wind tunnel has a diffuser that is slightly rounded at the inlet to avoid undesirable flow separation caused by a sharp corner at the inlet in subsonic flow. It then diverges with straight upper and lower walls, each at a certain angle relative to the horizontal. The entrance and exit heights of the diffuser are 0.5 and 3.5 m, respectively. What are the flow velocities at the entrance and exit of the diffuser? (Round the final answers to two decimal places.)

Added by Alexander S.

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