Experimental measurements for gaseous transport within an aircraft cabin
Experimental measurements for gaseous transport within an aircraft cabin
复制标题
DOI：
10.1016/j.buildenv.2015.03.011
复制
发表时间：
2015-07-01
影响因子：
7.4
通讯作者：
Beneke, J. M.
中科院分区：
文献类型：
--
作者：
Keshavarz, A.;Jones, B. W.;Beneke, J. M.
鉴于飞机作业的巨大航线结构和乘坐飞机的人的多样性，飞机受到危险病原体的污染是一个令人担忧的问题。本文报道的这项研究是一个更大的项目的一部分，该项目旨在调查可能用于解决此类病原体的气体净化剂的使用情况。计算流体动力学(CFD)模型被用来评估在各种条件下飞机驾驶舱内此类介质的分布情况。这样的模型需要实验数据来验证和调整。11排宽体飞机客舱模型和实际飞机的空气分配部件被用来收集这样的数据。用二氧化碳作为示踪气体来模拟气态净化器。在使用和不使用辅助风扇的情况下，收集了机舱内气体传输的详细数据。还测量或记录了几何、热和气流边界条件。尽管机舱和边界条件是对称的，但由于机舱内自然形成的水平空气循环，机舱内的气体传输显示为非对称。这种水平环流对纵向气体输送有很大的影响。这也会导致正常模式运行的环境控制系统(ECS)流量和辅助风扇之间从左到右的显著差异。收集的数据捕捉到了这种不对称性对正常模式运行和辅助风扇运行的影响，并提供了应该为验证所需的CFD模型提供足够挑战的数据集。(C)2015爱思唯尔有限公司。保留所有权利。
Given the vast route structures for aircraft operations and the diversity of people who fly on aircraft, the contamination of aircraft by dangerous pathogens is a concern. The research reported in this paper was part of a larger project to investigate the use of gaseous decontamination agents that may potentially be used to address such pathogens. Computational fluid dynamics (CFD) models are used to evaluate the distribution of such agents in an aircraft cabin under a variety of conditions. Such models required experimental data for validation and tuning. An 11-row wide-body aircraft cabin mockup with air distribution components from an actual aircraft was used to collect such data. Carbon dioxide was used as a tracer gas to simulate a gaseous decontamination agent. Detailed data for gaseous transport in the cabin were collected both with and without the use of supplementary fans. Geometric, thermal, and airflow boundary conditions were also measured or documented. Even though the cabin and boundary conditions are symmetrical, the gaseous transport in the cabin was shown to be non-symmetrical due to a horizontal circulation of air that naturally forms in the cabin. This horizontal circulation has a substantial impact on longitudinal gaseous transport. It also results in substantial left-to-right differences between normal-mode operation Environmental Control System (ECS) flows and the supplementary fans. The data collected captures the impact of this asymmetry both for normal-mode operation and supplementary fan operation and provide sets of data that should provide adequate challenges to CFD models needed for validation. (C) 2015 Elsevier Ltd. All rights reserved.