01 Outdoor Setup

Define atmospheric boundary layer inflow conditions for Eddy3D.

Define inflow boundary conditions from a manually entered vertical profile (z/zR, U/UR, k/UR^2) instead of the parametric ABL log-law. Writes fixedProfile inlet conditions for U, k and epsilon. epsilon is derived from the profile as epsilon(z) = Cmu^0.5 * k(z) * d(U)/dz.

Create a uniform (constant velocity) inflow boundary condition for Eddy3D.

Download an EPW weather file from climate.onebuilding.org nearest to your project location. Use the Search input to filter by station name, WMO ID, or dataset year.

Translate a Ladybug analysis period to hours of the year.

Visualize a wind direction on a compass circle. Direction is meteorological degrees (0=N, 90=E, 180=S, 270=W); outputs the flow vector and the 16-point cardinal name.

Cluster annual wind directions into representative directions using k-means.

Creates a STL mesh from geometry using the gmsh application. Useful to create healthy mesh topologies for building elements.

Represents a tree as a porous zone for wind blocking (Darcy-Forchheimer). Feed into the wind case component.

Combine a multi-part building mesh into a single watertight, CFD-ready solid via the bundled Python mesh service (trimesh/manifold3d/pymeshfix). The server auto-starts locally on the first run (uv-managed Python environment; first start installs it, 1-2 minutes) and is reused afterwards.