Computational fluid dynamics modelling for indoor radioactive pollutant study

The present case study focuses on indoor radon dispersion in an experimental room made of unfired mud brick by employing CFD modeling, active measurement, and passive measurement in closed and open room conditions. Radon flux for walls and floor surfaces of the room was measured experimentally. A CFD model was designed to simulate spatial distribution pattern of indoor radon. The CFD simulation results are validated through a newly developed RnDuo monitor and single-entry pinhole-based twin-cup dosimeter. The mean indoor radon concentration decreases by approximately one-fourth level in an open room as compared to a closed room.