CFD & FEA Analysis of a Hurricane Evacuation Information Sign

This study examines the functionality of a hurricane evacuation information sign under a pair of wind hurricane category conditions utilizing Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) simulations. It identifies and assesses drag forces, lift forces, and moments on the sign at varying orientations and wind speeds. Because the CFD analysis confirmed a good boundary layer resolution, the results are closer to theoretical prediction. Also, mesh independence study guaranteed the reliability of data.

In structural analysis, FEA simulations included determining stresses, displacement and flow-induced vibration risk. The analysis shows high-stress portions found significantly near the supports, resulting in design modifications such as modifying the sign design and selecting some better materials. It reduced displacement significantly and raised the Factor of Safety up to 14. The project also examined harmonic resonance by analyzing the natural frequency of the sign and comparing it with the frequencies related to vortex shedding. While some of these issues arise at high wind speeds, the measures proposed were mostly increasing the stiffness of the supports to overcome this.

Thus, this project could give an insight into understanding and optimizing the design of the hurricane evacuation information sign so that safety, stability, and functionality are guaranteed under the most extreme conditions of a hurricane.

CFD Simulations

FEA Results

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Final Report - MSA217540832.pdf

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