Wind tunnel testing of the concrete reef balls used in artificial reefs is proposed. A typical reef ball (e.g. Figure 1.2) has a diameter of 6 ft, and is immersed in sea water. A scale model is prepared with diameter of 6 in.
a. At what range of velocities should wind tunnel tests be performed to ensure that the experimental data are relevant to the real reef balls?
b. What effect do you believe that the holes in the reef ball will have on the flow, if any?
