该文基于计算流体力学建立了有内热源的双排座椅座舱模型,分别在侧壁送风、天花板送风和侧壁-天花板共同送风三种模式下,模拟客舱内气态污染物的扩散,分析其传播规律和分布情况。通过对比,发现在侧壁-天花板共同送风情况下,乘客呼吸区域污染物浓度最小,为座舱通风的设计研究提供了理论基础和依据。 Based on computational fluid dynamics (CFD), a two-row cockpit model with internal heat source was established. The model was used to simulate the diffusion of gaseous pollutants in the cabin under three modes: side wall air supply, ceiling air supply and side wall-ceiling common air supply , Analysis of its propagation patterns and distribution. Through the comparison, it is found that the concentration of pollutants in the passenger breathing area is the smallest when the side wall and the ceiling are jointly ventilated, which provides the theoretical basis and basis for the design and study of cabin ventilation.