Research Article

Further Analysis of Non-Gaussian Wind Pressure Peak Factor Calculation

Table 4

Comparison of frequency-domain characteristics of fluctuating wind pressure in typical regions.

RegionVortex scaleFrequency of energy concentrationEnergyFluctuating wind pressureReduction frequency corresponding to energy peak

Front edge of separation zoneLarge-scale vortexLow frequencyThe energy is highLarge amplitude fluctuationAbout 0.1

Reattachment zoneSmall-scale vortexHigh frequencyThe energy is lowStable pulsationNear 1
Wake areaNear 1

The area between the separation point and the reattachment pointCoexistence of large-scale and small-scale vortexesIntermediate bandThe energy is mainly concentrated in two main frequencies, showing two peaksIntermediate amplitude pulsationThe corresponding reduction frequencies are around 0.1 and 1, respectively