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目前,系统仿真以及计算流体力学(CFD)仿真是研究飞机环控系统以及座舱流场的主要手段。通过系统建模仿真可以获得飞机环控各个子系统及各个部件的主要工作参数;通过计算流体力学仿真计算可获得飞机座舱内详细流场参数。飞机环控系统与座舱作为一个连续的整体系统,在实际工作中相互依存、相互影响,然而在研究中却往往被割裂开,顾此失彼。通过AMESim与Fluent耦合仿真,研究了在考虑环控系统再循环风影响下,飞机环控系统——座舱整体模型中污染物的进入、扩散以及排除。通过对比有回风、无回风工况的差异,证明了耦合仿真方法在环控系统——座舱研究上的适用性。由计算结果可知,考虑再循环系统与不考虑再循环系统导致的座舱内CO污染物的扩散及排除规律完全不同。
At present, system simulation and computational fluid dynamics (CFD) simulation are the main means to study the airborne control system and cockpit flow field. Through the system modeling and simulation, the main working parameters of each subsystem and each component can be obtained. Through the computational fluid dynamics simulation, the detailed flow field parameters can be obtained. As a continuous whole system, aircraft control system and cockpit interdependence and influence each other in actual work. However, in the research, they are often cut apart and ignored. Through the coupling simulation of AMESim and Fluent, the entry, diffusion and elimination of pollutants in the aircraft environment control system - cockpit overall model are studied under the influence of the recirculation wind of the control system. By comparing the difference between the return air and the return air without wind conditions, the applicability of the coupled simulation method to the control system-cockpit research is proved. From the calculation results, we can see that considering the recirculation system and not considering the recirculation system caused by cockpit CO pollutant diffusion and elimination of law completely different.