Simulated site wind availability across Hong Kong for air ventilation assessment
Simulation
Territory-wide modelled wind climate on a 500 m grid: annual, summer and winter directional wind frequencies and speeds at several heights, used to set inflow conditions for Hong Kong's statutory wind-tunnel and CFD air ventilation assessments.
Planning Department, HKSAR Government. (2019). Simulated site wind availability across Hong Kong for air ventilation assessment [Data set]. https://www.pland.gov.hk/pland_en/resources/site_wind/open_data/site_wind_open_data.csv
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720 time-mean lattice-Boltzmann LES cases at 10 m resolution, 144 per city, spanning 16 wind directions, 3 reference speeds and 3 seasonal profiles, with 3D mean velocity and TKE plus building, terrain and footprint geometry. Very large (about 25 TB).
Input geometries and wind pressure coefficient results from CpSimulator, a cloud-based platform for predicting Cp on buildings. Useful for natural ventilation and wind-load studies.
Stereo PIV and surface pressure measurements around an idealised cubic building with and without vertical openings, under high- and low-shear boundary-layer inflow. Useful for validating near-building flow and ventilation simulations.
LOD1 building and podium blocks for all of Hong Kong (plus textured landmarks), roads, bridges and a terrain model, updated every two months: realistic geometry for the dense high-rise city.
Tools & geometryGeometry
Hong Kong, China · 2025 · HKSAR open data terms (free use with attribution)
Data and scripts for a resistance-network model of near-surface winds, ventilation and pollutant transport in Yixing. Useful for urban ventilation studies.