Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session X24: Flow Control: Separation and High-Speed Flows
8:00 AM–10:23 AM,
Tuesday, November 21, 2023
Room: 150A
Chair: Amy Lang, University of Alabama
Abstract: X24.00005 : Bio-inspired Fractal Parapet to Mitigate Rooftop Suction over a Low-Rise Building in High Winds*
8:52 AM–9:05 AM
Presenter:
Erick Shelley
(Cleveland State University)
Authors:
Erick Shelley
(Cleveland State University)
Wei Zhang
(Cleveland State University)
This research used a biomimetic approach to identify wind resilient strategies in nature and apply them to design a novel parapet. Fractal patterns have been used to control turbulence scales, increase turbulence intensity and reduce wind velocity. A cross-grid fractal-based porous parapet was designed to attempt further reduction in rooftop suctions. Wind tunnel tests of a 1:6 scaled low-rise building model was conducted to examine rooftop pressures of three configurations: no-parapet (control), porous parapet and fractal porous parapet. These configurations were tested at various wind directions to determine their effects on mitigating peak rooftop suctions. The results will provide insights into innovative flow control strategies by learning from nature.
*National Science Foundation (NSF); Cleveland State University Graduate Student Research Award
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