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Creators/Authors contains: "Yi, Young R."

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  1. Hurricanes have been the most expensive and devastating natural disasters in US history. Nevertheless, our understanding of the turbulence processes in these flows is limited due to the lack of sufficient measurements and high-resolution turbulence-resolving simulations. Our objective in this study is to bridge this knowledge gap by conducting a thorough sensitivity analysis of the hurricane boundary layer using large-eddy simulations. We characterize the impacts of the radius, surface roughness, gradient wind, and sub-grid scale viscosity models on the hurricane’s mean and turbulence dynamics. Our results indicate that increasing the Rossby number (rotation) increases the hurricane’s maximum jet velocity, reduces the boundary layer height, and decreases the size of coherent turbulent structures at the same elevation. This study provides insights into the turbulence dynamics in hurricanes and can guide the development of more accurate turbulence models for rotating hurricane flows. 
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