Civil Engineering Reference
In-Depth Information
Figure 4.15
Mean pressure coefficients on a
tall prism in turbulent boundary-layer flow
(Baines, 1963).
For a given height,
h,
greater values of roughness length,
z
0
,
and lower values of Jensen
number imply rougher ground surface and hence greater turbulence intensities at the
height of the body. Thus, fluctuating pressure coefficients also depend on Jensen
number—decreasing Jensen number generally giving increasing root-mean-square
(r.m.s.) pressure coefficients.
