4.1. RMS Surface Pressure Fluctuations and Features of the Velocity Field
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چکیده
The complexity of the skewed 3-D boundary layer (figure 3) necessitates the use of multiple coordinate systems. The Tunnel coordinate system is right-handed with the x-axis parallel to the tunnel centerline pointing downstream and the y-axis perpendicular to the tunnel floor pointing up. The Wall-Shear-Stress coordinate system is right-handed with the x-axis in the shear-stress direction at the wall as approximated by the measured mean-flow angle closest to the wall (Ölçmen and Simpson, 1995a; Ölçmen et al., 1996, 1999b). The y-axis is normal to the wall, pointing up.
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