Indoor airflow CFD dataset: 193 steady simulations of one room with varying ceiling-diffuser layouts

193 steady-state CFD simulations of a single furnished room (8.80 × 6.10 × 3.20 m) in which the positions of six ceiling vent panels (three supply, three return) are the only variable. Geometry, furniture, flow rate, supply temperature, wall boundary conditions, solver settings and mesh are identical across all cases. Solver. OpenFOAM v2412, buoyantSimpleFoam, Boussinesq approximation, k–ε turbulence model, about 5.7 × 105 cells per case, one identical deterministic solution protocol for every case. Contents. One directory per case, 21 CSV files each: Fluid_data.csv (all interior cell centres, about 566,000 rows: temperature, velocity magnitude and components, pressure, x/y/z), New_HVAC.csv (the six vent panels), Leak.csv, and 18 wall and furniture boundary patches (velocity, pressure, x/y/z). Units are SI. Layouts. Five design tiers: a reference grid (9), the reference grid translated (18), a Sobol sample over a continuous design box (80), the same with independent per-vent jitter (20), and a Sobol sample over the full feasible layout space (66). Use. Extract into cfd/dataset/ of the accompanying code repository, which also contains the committed train/validation/test split assignments and the pipeline that generated these cases. Checksums are provided in SHA256SUMS and MD5SUMS.