CFD modeling for natural ventilation in a lightwell connected to outdoor through horizontal voids

- 3D steady RANS CFD simulations for natural convection flow in lightwell.
- Validation results of RANS models reasonably agree with experimental data.
- Sensitivity analysis of impact computational parameters for more accuracy results.
- Voids in cross-ventilation configurations and double-level more effective than others.
- Wind direction is an important parameter which determines air flow patterns and velocity.