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Numerical simulation and parametric analysis of wind-induced snow drift patterns on stepped roofs
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DOI：10.1016/j.coldregions.2026.104970.png)
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Abstract
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• 3D CFD of roof snowdrifts using the Eulerian–Eulerian model with dynamic mesh. • Key separations, recirculation zones and horseshoe vortices govern roof drifts. • Quantify wind speed, roughness, initial snow and fetch effects on drift profiles. • Critical wind speed threshold controls erosion–deposition near the roof step. • Wind speed–fetch synergy concentrates peak triangular deposition at the step.
Keywords:
snowdrift
stepped roofs
CFD simulation
wind speed
snow deposition
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