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Metamodelling-Based Optimisation Approach for Wind Interference Effect on Octagonal Tall building
https://orcid.org/http://orcid.org/0000-0002-7824-7818
An octagonal plan-shaped principal building is subjected to boundary layer wind flow in the presence of three square plan-shaped interfering buildings. A thorough numerical investigation by computational fluid dynamics is conducted to find out the interference effects on the octagonal building for 0°, 30° and 330° wind incidence angles. Different metamodels of interference factors (IF) are derived for the different faces of the building under different wind incidence angles. Interference factors determined using the metamodels are applied for calculating the interference factor for different interference cases. Response Surface Method is employed to establish the metamodels in terms of distances between buildings. These metamodels are optimised to create upstream interference zones for different wind incidence angles. The uncertainty principle is employed in the optimisation technique to incorporate the uncertain nature of the wind flow. Power spectral densities (PSD) of selected cases are presented to show the dynamic effect of wind in isolated as well as interfering cases. A notable difference in peak PSD is observed between PSDs for different wind incidence angles and in interference condition. The generated metamodels can be used to find out the interference factors for different faces of the principal buildings. This interference factors, in turn, can be used to find out the pressure coefficients for the faces at various interfering conditions without having to analyse each of the cases. The interference zone is a boundary marker for pointing out the region around the principal building inside which the interfering buildings affect wind-induced responses of the principal building. The difference in pressure spectra between isolated and interfering case is primarily observed in a higher frequency range which highlights the local disturbances on the principal building in those interfering conditions. This phenomenon has to be considered while designing the building in said interference condition.
Metamodelling-Based Optimisation Approach for Wind Interference Effect on Octagonal Tall building
https://orcid.org/http://orcid.org/0000-0002-7824-7818
An octagonal plan-shaped principal building is subjected to boundary layer wind flow in the presence of three square plan-shaped interfering buildings. A thorough numerical investigation by computational fluid dynamics is conducted to find out the interference effects on the octagonal building for 0°, 30° and 330° wind incidence angles. Different metamodels of interference factors (IF) are derived for the different faces of the building under different wind incidence angles. Interference factors determined using the metamodels are applied for calculating the interference factor for different interference cases. Response Surface Method is employed to establish the metamodels in terms of distances between buildings. These metamodels are optimised to create upstream interference zones for different wind incidence angles. The uncertainty principle is employed in the optimisation technique to incorporate the uncertain nature of the wind flow. Power spectral densities (PSD) of selected cases are presented to show the dynamic effect of wind in isolated as well as interfering cases. A notable difference in peak PSD is observed between PSDs for different wind incidence angles and in interference condition. The generated metamodels can be used to find out the interference factors for different faces of the principal buildings. This interference factors, in turn, can be used to find out the pressure coefficients for the faces at various interfering conditions without having to analyse each of the cases. The interference zone is a boundary marker for pointing out the region around the principal building inside which the interfering buildings affect wind-induced responses of the principal building. The difference in pressure spectra between isolated and interfering case is primarily observed in a higher frequency range which highlights the local disturbances on the principal building in those interfering conditions. This phenomenon has to be considered while designing the building in said interference condition.
Metamodelling-Based Optimisation Approach for Wind Interference Effect on Octagonal Tall building
https://orcid.org/http://orcid.org/0000-0002-7824-7818
An octagonal plan-shaped principal building is subjected to boundary layer wind flow in the presence of three square plan-shaped interfering buildings. A thorough numerical investigation by computational fluid dynamics is conducted to find out the interference effects on the octagonal building for 0°, 30° and 330° wind incidence angles. Different metamodels of interference factors (IF) are derived for the different faces of the building under different wind incidence angles. Interference factors determined using the metamodels are applied for calculating the interference factor for different interference cases. Response Surface Method is employed to establish the metamodels in terms of distances between buildings. These metamodels are optimised to create upstream interference zones for different wind incidence angles. The uncertainty principle is employed in the optimisation technique to incorporate the uncertain nature of the wind flow. Power spectral densities (PSD) of selected cases are presented to show the dynamic effect of wind in isolated as well as interfering cases. A notable difference in peak PSD is observed between PSDs for different wind incidence angles and in interference condition. The generated metamodels can be used to find out the interference factors for different faces of the principal buildings. This interference factors, in turn, can be used to find out the pressure coefficients for the faces at various interfering conditions without having to analyse each of the cases. The interference zone is a boundary marker for pointing out the region around the principal building inside which the interfering buildings affect wind-induced responses of the principal building. The difference in pressure spectra between isolated and interfering case is primarily observed in a higher frequency range which highlights the local disturbances on the principal building in those interfering conditions. This phenomenon has to be considered while designing the building in said interference condition.
Metamodelling-Based Optimisation Approach for Wind Interference Effect on Octagonal Tall building
Iran J Sci Technol Trans Civ Eng
Kar, Rony (author) / Dalui, Sujit K. (author)
2022-06-01
18 pages
Article (Journal)
Electronic Resource
English
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