飞机客舱空气舒适度数值模拟研究

发布时间：2018-03-28 13:30

本文选题：飞机客舱　切入点：桥载空调　出处：《中国民航大学》2016年硕士论文

【摘要】：民航局于2011年要求全国各机场在航前、航后及停靠阶段时,逐步推广使用桥载设备替代APU。桥载空调指的是悬挂在廊桥下面的空调。近几年二氧化氮污染成为环境污染的重要话题,尤其在机场附近,当用桥载空调供气的时,乘客在座舱内会受到二氧化氮的危害。目前在使用桥载设备的时候,存在以下两个方面的问题:人体热舒适性问题、满足舒适性前提下的能耗最优问题。本文研究的主要内容是桥载空调为飞机提供送风对客舱内的空气舒适度的影响,进而得到本文数值仿真结果下,最优的桥载空调的送风速度,为将来桥载空调的控制提供基础。研究的手段采用的是计算流体力学技术,飞机客舱内的空气舒适度的评价指标是的空气分布特性指标和客舱内NO2的浓度。进行的主要工作包括:对计算流体力学的理论基础进行介绍,描述仿真需要做的前处理工作,对建立的客舱模型进行数值仿真,对得到的数值结果进行分析处理,最终为桥载空调的控制提出建议性的指导。本文的研究成果包括两个方面:建立了相对贴近实际的客舱模型和定量研究了桥载空调送风速度对客舱内部空气舒适度影响。在飞机客舱建模方面,按照波音737飞机的实际尺寸建立了飞机客舱的外形,建立桥载空调和飞机空气供气管道的真实连接形式,还建立了飞机客舱供气管道和供气管道内的回风系统,这样尽可能与实际情况贴近建模方式保证仿真结果的准确性。论文经过对仿真结果进行分析,发现桥载空调送风过大过小都会使客舱内的热舒适性降低,桥载送风速度对NO2浓度的影响是随着送风速度增加,客舱内部的NO2浓度越来越大,所以桥载空调送风速度对客舱内舒适度的影响是一个优化问题,文章最后通过建立目标评价函数的方法得到了本仿真情况下,最优的桥载空调送风速度,本文的结论可以为将来桥载空调的控制提供建议性的指导。
[Abstract]:In 2011, the Civil Aviation Administration required airports across the country to be in the pre-flight, post-voyage and docking stages. Gradually popularize the use of bridge-borne equipment instead of APU.Bridge-borne air conditioners refer to air conditioners suspended under covered bridges. In recent years, nitrogen dioxide pollution has become an important topic of environmental pollution, especially in the vicinity of airports, when air-conditioners are used to supply air. Passengers will be harmed by nitrogen dioxide in the cockpit. At present, there are two problems in the use of bridge-loaded equipment: the thermal comfort of the human body, The main content of this paper is the influence of the air supply by the bridge air conditioning on the comfort of the cabin air, and the numerical simulation results of this paper are obtained. The optimal air supply speed of the bridge air conditioning provides the basis for the control of the bridge air conditioning in the future. The research means is the computational fluid dynamics technology. The evaluation index of air comfort in the cabin of aircraft is the air distribution characteristic index and the concentration of NO2 in the cabin. The main work carried out includes: the theoretical basis of computational fluid mechanics is introduced, and the pre-processing work that needs to be done in simulation is described. Numerical simulation of the cabin model is carried out, and the numerical results obtained are analyzed and processed. The research results of this paper include two aspects: the establishment of a relatively close to the actual passenger cabin model and the quantitative study of the air supply speed of the bridge air conditioning to the cabin interior air comfort. Degree effect. In aircraft cabin modeling, According to the actual size of the Boeing 737 aircraft, the shape of the cabin of the aircraft was established, the real connection form between the bridge air conditioning and the air supply pipeline of the aircraft was established, and the air supply pipeline and the return air system in the air supply pipeline of the passenger cabin of the aircraft were also established. By analyzing the simulation results, it is found that too much air supply on the bridge air conditioning will reduce the thermal comfort of the cabin. The influence of the air supply velocity on the NO2 concentration is that the NO2 concentration in the cabin is increasing with the increase of the air supply velocity, so the influence of the air supply velocity on the comfort of the cabin is an optimization problem. In the end, by establishing the objective evaluation function, the optimal air supply speed of the bridge air conditioning is obtained. The conclusion of this paper can provide some advice for the control of the bridge air conditioning in the future.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V223.2

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