A Parametric Study of Wind Pressure Distribution on Façades Using Computational Fluid Dynamics
| Autor: | Jennifer Keenahan, Christopher McGuill |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Fin
0211 other engineering and technologies computational fluid dynamics 02 engineering and technology Computational fluid dynamics lcsh:Technology 01 natural sciences 010305 fluids & plasmas lcsh:Chemistry Physics::Fluid Dynamics pressure 021105 building & construction 0103 physical sciences wind General Materials Science lcsh:QH301-705.5 Instrumentation Physics::Atmospheric and Oceanic Physics Computer Science::Distributed Parallel and Cluster Computing parametric study Parametric statistics Fluid Flow and Transfer Processes lcsh:T business.industry Process Chemistry and Technology Bracket General Engineering Storm Structural engineering Wind direction lcsh:QC1-999 Computer Science Applications Computer Science::Performance Moment (mathematics) loading lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Physics::Space Physics façade Facade lcsh:Engineering (General). Civil engineering (General) business lcsh:Physics Geology |
| Zdroj: | Applied Sciences Volume 10 Issue 23 Applied Sciences, Vol 10, Iss 8627, p 8627 (2020) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app10238627 |
| Popis: | This paper uses Computational Fluid Dynamics (CFD) to determine wind pressures on faç ades for the purpose of efficient design of these elements. An outstand fin arrangement was modeled where local brackets are used to protrude the fins from the building. A parametric study, for both changes in the length of the bracket and the fin, was derived from CFD simulations with 1-in-50-year storm conditions adopted throughout. Further simulations are performed for revised wind directions that ensure all fins are equally exposed to oncoming winds. In total, 15 models are created to act as a representative sample of the total number of possible configurations. Peak values for pressure are used to calculate forces and moments on the fins. These wind loading results were then used to interpolate the values for the remaining faç ade geometries. From interpreting the trends that are apparent in the relationship of fin size and bracket length to efficient loading, a set of design criteria is established. The optimal faç ade design is defined, based on placing equal importance onto minimizing the force along the fin&rsquo s length and the moment acting at the fin-bracket connection. The performance of some faç ade elements is shown to worsen the effects of the wind, relative to other designs, with the potential for very negative consequences. Wind direction is shown to have a significant effect on loading, with the magnitude of wind pressures reduced considerably for the worst affected fin, if the sheltering effect is absent between the fins. |
| Databáze: | OpenAIRE |
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