Research on the Numerical Simulation of Aircraft Cabin Smoke

The aircraft cabin environment smoke accident can threaten the flight safety seriously. According to the incomplete statistics, the cabin smoke accident happens one time in every 5,000 flights. As a result, more attention is paid on the airworthiness validation of the cabin smoke to ensure the aircraft safety. However, lacking the knowledge of the diffusion law of cabin smoke sometimes makes the validation experiment of the cabin smoke dangerous and expensive. With the rapid progress of computer technology, computational fluid dynamics (CFD) is widely used. In addition, utilizing computer modeling and simulation before the validation experiment can significantly improve the operability and feasibility of the experiment. This paper analyzes the flow regularity of smoke in the aircraft cabin and the influence of ventilation on cabin smoke diffusion by Fluent, which could prove analysis/calculation to be one of airworthiness compliance validation methods and decrease the costs of ground test and flight test which is able to reduce cost and increase efficiency.