Wind and Structures
Volume 35, Number 2, 2022, pages 131-146
DOI: 10.12989/was.2022.35.2.131
Influence of turbulence modeling on CFD simulation results of tornado-structure interaction
Ryan Honerkamp , Zhi Li , Kakkattukuzhy M. Isaac , Guirong Yan
Abstract
Tornadic wind flow is inherently turbulent. A turbulent wind flow is characterized by fluctuation of the velocity in
the flow field with time, and it is a dynamic process that consists of eddy formation, eddy transportation, and eddy dissipation
due to viscosity. Properly modeling turbulence significantly increases the accuracy of numerical simulations. The lack of a clear
and detailed comparison between turbulence models used in tornadic wind flows and their effects on tornado induced pressure
demonstrates a significant research gap. To bridge this research gap, in this study, two representative turbulence modeling
approaches are applied in simulating real-world tornadoes to investigate how the selection of turbulence models affects the
simulated tornadic wind flow and the induced pressure on structural surface. To be specific, LES with Smagorinsky-Lilly
Subgrid and k-
Key Words
CFD; civil engineering; pressure; turbulence models; tornado; velocity
Address
- Ryan Honerkamp — Department of Civil, Architectural and Environmental Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA
- Zhi Li — Department of Civil, Architectural and Environmental Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA
- Kakkattukuzhy M. Isaac — Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA
- Guirong Yan — Department of Civil, Architectural and Environmental Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA
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