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5 years ago

Airports

Airports

PedestRian COmfORt

PedestRian COmfORt analysis fOR PtB design generating controlled external and internal microclimate by purposeful development of wind mitigation schemes that protect from the unfavourable action of downdrafts and ground level wind funnelling is key to the useability of the external spaces in the pedestrian arrival and departure zones of PtB. Bmt operates multiple channel wind speed sensing systems that allow the wind speed up to be quantified in severity and spatial extent in key pedestrian areas and for pedestrian wind comfort to be assessed. Bmt’s interactive approach to pedestrian wind comfort studies allows designers to develop wind mitigation schemes and validate these for effectiveness through time and cost-efficient iterative wind tunnel test workshop days. Bmt’s technical and interpretative reporting is compatible with environmental impact assessment formats required by planning authorities. Pedestrian Comfort Assessment Wind dRiven snOW & sand dRift / aCCumulatiOn analysis fOR PtB ROOf stRuCtuRe design depending on local climate, wind driven sand or snow accumulation and drift can cause significant loading on the large span roof structures of a PtB. codified methodology available to designers is often rather simplistic and when applied to complex roof arrangements can lead to overly conservative structural design solutions. Bmt have purposely developed number of sophisticated physical and numerical modelling techniques including aeolian transport and particle tracking models to provide designers with the opportunity to study the effects in greater detail and to derive more bespoke quantification of key loading scenarios. CFD Simulation Sand Drift analysis Of Building Wake imPaCt On aiRCRaft OPeRatiOns the analysis of wind shear and turbulence over airport runways that can arise due to unsteady wakes emanating from PtB or aircraft hangars can be reliably quantified through model scale boundary layer testing using hot-wire equipment, which can scan wind conditions on aircraft approach paths. these measurements can be combined with long-term wind statistics for the site to define the significance of potentially critical impacts on aircraft operations. in this type of assessment it is critical to take dues cognisance of aircraft type and size because this controls the band of turbulence length scales that determine impact aircraft response. Bmt has been involved in research including review of reported bad landing conditions. this has led to a good understanding of the turbulence criteria that govern large passenger aircraft response during landing to turbulence and wind shear, which can be applied in project specific studies. Montserrat Airstrip Tel: +44 20 8614 4400 Fax: +44 20 8943 3224 Email: enquiries@bmtfm.com Website: www.bmtfm.com Site Layout Turbulence Specra Wind Tunnel Model

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