Aircraft cabin comfort analysis with human thermoregulation model
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摘要: 民机座舱热舒适性研究对我国研制的大型飞机市场竞争力具有重要意义.在舒适性研究中人体热模型的合理性是影响舒适性分析与评价的关键.在开展的有限空间人员热特性实验测试基础上,建立了一种具有热调节行为的人体热模型,将人体复杂传热过程抽象为高温核心区、血液灌注区和等效组织区三者间热传递,很好地克服了常规定壁温或定热流密度人体模型的局限性,计算结果与实验结果吻合较好.将该模型结合文中提出的无迭代PMV(Predicted Mean Vote)热舒适性方程,在保证计算速度的前提下,可实现高人员密度的民机座舱舒适性分析.仿真结果表明:该方法既能够满足复杂空间的计算速度要求,又能较准确地体现人体生理热调节过程,仿真结果可靠性高.Abstract: The studies about cabin thermal comfort are of great significance in the large aircraft market competition. A reasonable human thermal model is the key to analyze and evaluate the thermal comfort. Based on thermal characteristics experiment of human in the limited space, a human thermal model with the behavior of thermal regulation was established. The complex heat transfer was simplified into the heat transfer among three areas of high temperature core, blood perfusion and the equivalent organization. This model will not only overcome the limitation of the constant wall temperature or constant heat flux density, but in good agreement with the experimental results. Combined with a predicted mean vote(PMV) thermal comfort evaluation method without iterative equation proposed, the comfort in crowded space can be analyzed under the premise of ensuring the calculation speed. Simulation results show that the method can meet the speed requirement when the simulation is for a complex space environment, but also more accurately reflects the human physiological thermal regulation process.
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Key words:
- aircraft cabin /
- thermal comfort analysis /
- thermal model of human /
- CFD simulation
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[1] Yildirim E D,Ozerdem B.A numerical simulation study for the human passive thermal system[J].Energy and Buildings,2008,40(7):1117-1123 [2] Zolfaghari A,Maerefat M.A new predictive index for evaluating both thermal sensation and thermal response of the human body [J].Building and Environment,2011,46(4):855-862 [3] Zhang H,Arens E,Huizenga C,et al.Thermal sensation and comfort models for 30 non-uniform and transient environments,part I:local sensation of individual body 31 parts[J].Building and Environment,2010,45(2):380-388 [4] Hwang R L,Lin T P,Liang H H,et al.Additive model for thermal 12 comfort generated by matrix experiment using orthogonal array[J].Building and Environment,2009,44(8):1730-1739 [5] Ferreira M S, Yanagihara J I.A transient three-dimensional heat transfer model of the human body[J].International Communications in Heat and Mass Transfer,2009,36(7):718-724 [6] Shitzer A, Eberhart R C.Heat transfer in medicine and biology analysis and Applications[M].New York:Plenum Press,2005 [7] Al-Othmani M,Ghaddar N,Ghali K.A multi-segmented human bioheat model for transient and asymmetric radiative environments[J].International Journal of Heat and Mass Transfer,2008,51(23/24):5522-5533 [8] 王黎静,王昭鑫,何雪丽.大型客机加强舱气流热仿真及舒适性评价[J].北京航空航天大学学报,2010,36(12):1436-1438
Wang Lijing,Wang Zhaoxin,He Xueli.Airflow thermal simulation and comfort evaluation of commercial airliner[J].Beijing University of Aeranautics and Astronautics,2010,36(12):1436-1438(in Chinese)[9] Alireza Zolfaghari,Mehdi Maerefat.A new simplified model for evaluating non-uniform thermal sensation caused by wearing clothing[J].Building and Environment,2010,45(3):776-783 -
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