Using pulsed air supply to reduce CO₂ concentration level in an aircraft cabin

Study of aircraft cabin flowfield is important for improving the cabin air quality and air delivery efficiency, but a challenging task. Numerical methods are efficient in evaluating different test conditions and concepts once properly validated. This study examines the effect of pulsed air supply on the transient cabin flowfield by modeling a cabin section with Ansys Fluent. Specifically, the CO2 concentration level at the passenger area is used as the performance indicator. The model is validated with published experimental data and results show that pulsed air supply improves CO2 concentration compared with continuous supply for the same amount of air supplied and has the potential to improve cabin air quality.