Discussion
Consider the following statements about wind-tunnel corrections:
1. Solid blockage arises from the volume the model occupies.
2. Wake blockage arises from the velocity deficit behind the model.
3. Horizontal buoyancy arises from the weight of the model.
Which of the statements given above is or are correct?
Answer: C
The first two are correct. The third confuses the name with the mechanism: horizontal buoyancy has nothing to do with weight and comes from the streamwise pressure gradient that the tunnel's own thickening wall boundary layers produce.
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