Modeling and Simulation of Transient Winds: Downbursts/Hurricane

Abstract eng:
The non-stationarity and localization of energetics in the transient wind fields have posed difficulty in proper modeling and simulation of these events. Utilizing recent developments in time-frequency analysis framework, i.e., the wavelet and Hilbert transforms and empirical mode decomposition, this paper seeks to highlight the evolutionary features of these wind fields by offering schemes for their modeling and simulation. With the help of time-frequency analysis tools, hurricane winds are characterized as a summation of time-varying mean and fluctuating components. A simulation approach based on a time-frequency framework is proposed for generating winds at different locations during the passage of a downburst. Numerical examples are presented to demonstrate the efficiency and effectiveness of the proposed modeling and simulation schemes.

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