Enhancing Thermal-Fluid Dynamics in Commercial Aircraft Cabins: Energy-Efficient Pulsed Ventilation Strategies Through Cfd Analysis

Abstract

This investigation evaluates the thermal and ventilation performance of pulsed airflow strategies in commercial aircraft cabins through computational fluid dynamics (CFD) analysis. Focusing on energy-efficient environmental control, the study compares mixing ventilation (MV) and displacement ventilation (DV) systems under periodic air supply conditions. The developed CFD model, validated against experimental measurements, reveals that pulsed ventilation induces dynamic airflow patterns that significantly influence thermal distribution and contaminant removal efficiency. Key findings demonstrate a 32% acceleration in pollutant removal rates and 30% improvement in breathing zone air quality through enhanced air mixing mechanisms. Notably, the periodic airflow strategy reduces ventilation stagnation zones by 40% while maintaining cabin temperature uniformity within ±1.5°C. The analysis quantifies energy conservation potential through optimized air exchange efficiency, showing a 15-20% reduction in required ventilation rates compared to steady-state operations. These results provide critical insights for designing adaptive ventilation systems that balance thermal comfort, air quality, and energy efficiency in confined transportation spaces. The proposed pulsed ventilation methodology offers practical solutions for improving environmental control systems in aircraft cabins while addressing growing sustainability requirements in aviation engineering.

Keywords: CFD, Mixing Ventilation, Displacement Ventilation, Air Age, Commercial Aircraft Cabin, Periodic Flow