Experimental and numerical aerodynamic analysis of an elevated beachfront house

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dc.contributor.authorTownsend, Jamie F.
dc.contributor.authorTeschner, Tom-Robin
dc.contributor.authorXu, Guoji
dc.contributor.authorZou, Lianghao
dc.contributor.authorHan, Yan
dc.contributor.authorCai, C. S.
dc.date.accessioned2022-12-13T13:50:23Z
dc.date.available2022-12-13T13:50:23Z
dc.date.issued2022-11-23
dc.description.abstractElevating coastal houses enables residential communities to reduce the risk of flooding due to tropical cyclones. However, wind-induced damage during such events requires an understanding of the inherent wind forces to improve damage mitigation techniques and assessment of climate-related risk in insurance models. In this study, wind-tunnel experiments and computational fluid dynamics (CFD) simulations are conducted for a typical elevated 1:25 scale beachfront house, possessing a 5:12 pitched gable roof with overhanging eave. An atmospheric boundary layer (ABL) wind field is generated in a low-speed wind-tunnel to replicate conditions experienced during tropical cyclones. Testing is performed for a range of incident wind angles to understand the full aerodynamic consequences of strong winds. Measured pressure coefficient (Cp) distributions are compared with CFD simulations using steady-state and transient Delayed Detached-Eddy Simulation (DDES) within ANSYS Fluent 2021 R1. Net Cp values surrounding the overhanging eave are considered to evaluate the role of this typical geometrical feature. It was found that larger uplift suction occurred at incident wind angles of 45°and above, after which the suction remained stable. The roof panels are subjected to the greatest upward suction, where critical regions occur at the roof ridge. The size of the low-pressure regions is determined by the incident wind angle and ensuing flow separation wherein DDES is found to reproduce additional aerodynamic features arising from unsteady turbulent flow. DDES offers improved predictive capability when mean pressure forces are considered but falls short as an accurate means to efficiently evaluate peak distributions.en_UK
dc.identifier.citationTownsend JF, Tescher T-R, Xu G, et al., (2022) Experimental and numerical aerodynamic analysis of an elevated beachfront house. Journal of Wind Engineering and Industrial Aerodynamics, Volume 231, December 2022, Article number 105234en_UK
dc.identifier.issn0167-6105
dc.identifier.urihttps://doi.org/10.1016/j.jweia.2022.105234
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/18793
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectWind tunnel experimenten_UK
dc.subjectComputational Fluid Dynamics (CFD)en_UK
dc.subjectSteady-state RANSen_UK
dc.subjectDDES simulationen_UK
dc.subjectCoastal residential houseen_UK
dc.subjectOverhanging eaveen_UK
dc.titleExperimental and numerical aerodynamic analysis of an elevated beachfront houseen_UK
dc.typeArticleen_UK

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