LES vs RANS for wind engineering
Understand when to use LES versus RANS for wind loads and pedestrian-level winds, and how DynaWind supports consulting-grade workflows.
Quick rule-of-thumb
- LES is typically used when you need time-resolved flow physics and robust wind-load estimation for complex tall-building aerodynamics.
- RANS is typically used when you need fast, steady-state estimates — especially for pedestrian-level wind (PLW) screening and scenario studies.
What you get from each
- LES: coherent vortices, transient pressures, better load statistics for challenging geometries — at higher computational cost.
- RANS: mean flow fields and faster turnaround — useful for comfort/safety mapping, early design iteration, and multi-option comparisons.
How DynaWind supports both
- Geometry-aware meshing that snaps to building details.
- Boundary-layer inflow generation that respects key turbulence statistics used in wind engineering.
- Clean outputs aligned with the consulting “Davenport Chain” workflow (climate → exposure → aerodynamics → loads → response → decisions).
LES vs RANS
Model choice for wind loads and PLW.
CFD + wind tunnel validation
Defensible workflow and benchmarking.
AI-assisted workflows
Where AI helps in consulting delivery.
Why DynaWind is different
Integrated suite vs scattered tools.
Want a project walkthrough? Contact us and we’ll suggest a defensible setup (including Davenport Chain mapping) for your building.