Consider weather conditions for which the prevailing wind blows past the penthouse tower on a tall building. The tower length in
the wind direction is 10 m and there are 10 window panels.a. Calculate the average convection coefficent for the 1st, 3rd, and 10th window panels when the wind speed is 5 m/s. Use a film temperature of 300K to evaluate the thermophysical properties required of the correlation. Would this be a suitable value of the film temperature for ambient air temperatures in the range of -15°C <_ T[infinity] <_ 38°C?b. For the 1st, 3rd, and 10th windows, on one graph, plot the variation of the average convection coefficients with wind speeds in the range of 5 <_ u[infinity] <_ 100 km/h. Explain the major features of each curve and their relative magnitudes.
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Answer:
The angular velocity is 7.56 rad/s
the maximum water height is 2 ft
Explanation:
The z-position as a function of r is equal to
(eq. 1)
where
h0 = initial height = 1 ft
w = angular velocity
R = radius of the cylinder = 1.5 ft
zs(r) = 0 when the free surface is lowest at the centre
Replacing and clearing w
if you consider the equation 1 for the free surface at the edge is equal to