Abstract
Affected by the large-scale boundary layer wind, thunderstorm clouds are often accompanied by a horizontal movement while producing downdrafts. However, previous studies mainly focused on the stationary downburst. Hence, the understanding of the wind field characteristics of moving downbursts is still insufficient. To study the influence of a storm's movement on the downburst wind field, based on the impinging jet test device with a movable nozzle, the stationary and moving downburst are simulated. Firstly, the moving average method is used to process the wind speed time history, and according to various existing criteria, a reasonable moving average time is determined. Afterwards, the vertical, radial, and lateral wind profiles are respectively given, and the influence of the parameter η – which represents the ratio of the storm translating speed (Vtr) to the jet velocity (Vjet) – on the wind profile is studied. Moreover, the applicability of the vector sum method is verified. Finally, turbulence properties including turbulence intensity, power spectral density function (PSD), and probability density distribution function (PDF) are furthermore analyzed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Wind Engineering and Industrial Aerodynamics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
