Notice of RetractionStudy on turbulent characteristics of downburst winds using computational simulation method

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

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Thunderstorm downbursts, which are sources of extreme wind loadings in nature, have caused numerous structural failures, especially collapses of transmission tower around the world. It is important to study flow characteristics of downburst winds from the perspective of wind-resistant design for downburst-induced high intensity winds. In this paper, the turbulent characteristics of downburst winds were studied using computational simulation method. Firstly, the wind field of downburst was computational simulated using time-filtered Reynolds Averaged Navier-Stokes (RANS) numerical computational method. Then, the turbulent characteristics of downburst winds during the outbreak stage, development stage and diffusion stage, especially impinging ground stage of the whole formation and diffusion process were studied in detail. The results indicate that the turbulent characteristics of downburst winds present quite different characteristics at different time during the whole formation and diffusion process.