In: Mechanical Engineering
A sheet of metal of 2 m ´ 2 m and 1.5 mm thickness is being tested in a wind tunnel.
a. Calculate the critical velocity, in m/s, at which the boundary layer will remain laminar.
b. For an upstream velocity of 35 m/s, what percentage of the metal sheet surface will have a laminar boundary layer.
c. For each of the previous cases (all laminar B.L and mixed laminar/turbulent B.L), calculate the drag force on the plate, in N. Use Table 9.3 to calculate the appropriate drag coefficients.