The stationarity test of 'unit-root' indicates that the daily wind speed for each stationis stationarity. In order to quantify the persistence at the turbine cut-in speed of 4 m/s, the wind speed duration curve (WSDC) isdrawn. The results demonstrate a decrease in the persistence in ...
The relationship between short-duration gusts and a average wind speed (the gust factor) is important in the determination of the magnitude of wind loads t... The relationship between short-duration gusts and a average wind speed (the gust factor) is important in the determination of the ...
The performance of a wind turbine is usually characterized by its power curve, which relates the wind speed at hub height with its energy production. This relation does not take streamwise inhomogeneities of the inflow – as they might be present in complex terrain – into account. In this wor...
The HURRECON model estimates wind speed, wind direction, enhanced Fujita scale wind damage, and duration of EF0 to EF5 winds as a function of hurricane location and maximum sustained wind speed. Results may be generated for a single site or an entire region. Hurricane track and intensity data...
The speed range of maximum values corresponds to the maximum frequency (excluding the artificially large value of the rightmost bin as a result of the infinite range). Then, it decreases rapidly with the increase in wind speed in accordance with the observed distribution curve. View Download ...
changing the rigid connection of the traditional wind turbine drive chain by using coupling device to realize the flexible connection of the drive chain, increasing the inertia of the unit to improve the ability to resist the impact load, and the speed regulating wind turbine emerges as the times...
Odour filament density and distribution within a plume are affected by wind speed. In slow winds, there may be insufficient directionality to assess the source of an odour, thus, bears may move independently of wind direction. Fast winds increase turbulence intensity and may disrupt odour plumes,...
but high elevation of the bridge deck causes the wind speed difference between the bridge deck and the canyon21,22, where the study of the local wind environment of the bridge deck is urgent. The approach bridge is a twin-box beam with a width of 12 m and a height of 2 m, and the...
(Section 3.2) and generate a time series line plot overlayed with a 2 × 2 contingency table. When the variable of interest iswind speedand the height level matches the specified hub height, the code derives power using a power curve, which can be selected by the user. Note that the ...
The ability for wind shear to move material off a surface can be described by a curve that relates threshold friction speed to particle diameter (Shao and Lu, 2000). The minimum in this curve represents the lowest friction speed at which particles can be mobilized; on Earth this value is ...