Essam E Khalil
Cairo University, Egypt
Title: Numerical analysis for smoke spread in an aircraft hangar
Biography
Biography: Essam E Khalil
Abstract
Smoke is one of the most dangerous factors in an aircraft hangar in case of fi re. As it causes the reduction in visibility and fatality due to high temperature or toxicity also prevents applying evacuation plan for workers. Th is paper presents a numerical analysis for improving the traditional system of the ventilation system to manage smoke produced due to push-back vehicle on fi re at an aircraft hangar. Th rough studying the eff ect of changing extraction and supply fl ow rates, the number of extraction and supply fans, as well as the eff ects of extraction and supply fans arrangement on the visibility, temperature and air velocity at the human level to ensure not to exceed limits stated by NFPA to apply evacuation plan for workers. The present investigation is performed using fi re dynamic simulator to simulate 16 case studies in the hangar of airports in Brandenburg. Th e hangar has the outer dimensions of 83.40m width and 77.60m depth and thus an inner area of approx. 6,472m2. Th e hangar has a medium interior height of approximately 18.20m. Th e present results demonstrate that using extraction fans with rate (ACH) double the supply rate for the traditional ventilation system yields very good results in controlling the smoke behavior and spread. As well as, decreasing the number of supply fans will result in reduced smoke spread rate inside the hangar, which
would help to control the smoke spread of fi re in less time. Th e hangar has a medium interior height of approximately 18.10m. Th e hangar has one large wide aircraft (Airbus A330-300). Th e following are the main conclusions.