LBM Run - [source code]
Prepare and launch a container-based OpenLB wind simulation (Smagorinsky LES, time-averaged pedestrian wind field). Uses the same ABL inflow object as the OpenFOAM and FluidX3D engines. Needs Docker Desktop or podman; the solver image is pulled on first run.
Input
| Name | Nickname | Description | Type |
|---|---|---|---|
| Working Directory | Dir | Parent directory for named LBM cases (optional; default ~/Eddy3D/Cases/LBM). Must not contain spaces because the case is mounted into the container. | Text |
| Case Name | Case | Case folder name below Working Directory. Letters, numbers, hyphens, and underscores only. | Text |
| ABL | ABL inflow from the 'ABL Flow' component — the SAME boundary condition the OpenFOAM engines use (reference speed, reference height, roughness length, direction). Uses the first wind direction (one direction per case). | Generic Data | |
| Domain | Simulation domain (optional). Accepts the Box Domain component's output — its Front/Back/Side/Top extensions override the auto margins (Cell Size and refinement are OpenFOAM meshing concepts and are ignored; lattice spacing comes from the LBM settings) — or a plain Box, used verbatim as the domain extents. | Generic Data | |
| Probes | Pts | Probe points, OpenFOAM-style (optional): the solver samples the time-averaged wind at EXACTLY these world-frame locations, in this order, instead of the default grid (the full domain at Probe Height). Wire the same sensor points you would probe an OpenFOAM case with; LBM Field returns them in the same order. | Point |
| Buildings | B | Building geometry. | Mesh |
| Terrain | T | Terrain / ground context meshes (optional; merged with the buildings). | Mesh |
| Settings | S | LBM run settings (optional; defaults used otherwise). | Generic Data |
| Clear | Delete this named case folder and all of its contents. | Boolean | |
| Prepare | P | Write the case (STL + case.xml + launch script) without running. | Boolean |
| Run | R | Prepare (if needed) and launch the solver container in a terminal window. | Boolean |
Output
| Name | Nickname | Description | Type |
|---|---|---|---|
| Logs | L | Run log / status. | Text |
| Case | C | LBM case directory — plug into the 'LBM Field' component to read results. | Text |
| Domain | D | Resolved simulation domain in world coordinates (wind-aligned, matching how the lattice actually sits around the buildings). Updates live with the inputs — no Prepare needed; the standard preview renders it in the viewport. | Box |