Computer Simulation Investigation on the Effect of Channelled and Unchannelled Screens on Smoke Contamination in Atriums Upper BalconiesMohammad Shakir Nasif, Syed Ali Hasnain, William Pao and Rafat Al-WakedMATEC Web of Conferences, 13 (2014) 02007DOI: https://doi.org/10.1051/matecconf/20141302007