Civil Engineering Reference
In-Depth Information
leak tube. For multiple pressure tap measurements with this system, it is normally
necessary to connect all the leaks to a common reference pressure, usually that
inside a closed chamber, or plenum, to which the reference static pressure is also
connected.
The general arrangement of the three types of single-point measurements are shown in
Figure 7.7.
7.5.2 Measurement of area-averaged pressures
Systems which average the pressure fluctuations from a number of measurement points,
so that area-averaged wind loads on finite areas of a structure can be obtained, are now in
common use. Averaging manifolds were first used in wind tunnels by Surry and
Stathopoulos (1977). Gumley (1981, 1983) developed a theoretical model for their
response.
Figure 7.7
Tubing arrangements for
measurement of point pressures.
