Abstract
To investigate fluctuating wind pressures induced by seperating and reattaching flow, pressures on the surfaces of the two-dimensional models having a rectangular section of the ratio 1 : 7.5 were measured. Power spectra of the fluctuations at the several points on the surface parallel to the flow and rms values distributions along the cross section were obtained. As the result, it was confirmed that two nondimensional parameters √<P^^-n^2/q> (Pf; fluctuating pressure, q; dynamic pressure) and nd/U (n; frequency, d; typical length of the model, U; wind speed) have more effects on the flow characteristics than the Reynolds number between 1.4×10^4 and 2.3×10^5.
