口喉边界传热下吸湿性颗粒物运动与沉积模拟

发布时间：2018-02-26 15:11

本文关键词： 边界传热呼吸道可吸入颗粒物吸湿性多组分　出处：《工程热物理学报》2017年09期 　论文类型：期刊论文

【摘要】：本文构建了含呼吸道周边黏液层和组织的口喉呼吸道模型,实现了黏液层上水蒸气组分输运和对流传热、黏液层内汽化潜热和黏液层及呼吸道周边组织内的导热模拟,在27.6°C,相对湿度34.7%空气入口条件下分别模拟了在1)考虑呼吸道、黏液层及组织导热、对流和汽化潜热和2)呼吸道壁面恒定37°C两种边界条件下的理想口喉模型中多组分吸湿性颗粒物的运动和沉积。结果表明,条件1平均相对湿度较条件2高2.3%,但颗粒物沉积率比条件2小,最大差异可达9%;颗粒物沉积形式类似,但条件1下沉积的颗粒物平均直径比条件2小40.7%,逃逸颗粒物平均直径小14.3%。
[Abstract]:In this paper, an oral and laryngeal respiratory tract model containing the mucus layer and tissue around the respiratory tract is constructed. The transport and convection heat transfer of water vapor components on the mucus layer, the latent heat of vaporization in the mucus layer and the heat conduction in the mucus layer and the surrounding tissues of the respiratory tract are simulated. At 27.6 掳C and relative humidity of 34.7% air inlet, respectively, at 1) respiratory tract, mucus layer and tissue heat conduction were taken into account. Movement and deposition of multi-component hygroscopic particles in an ideal mouth-throat model with convection and vaporization latent heat and 2) respiratory tract wall constant at 37 掳C boundary conditions. The average relative humidity of condition 1 was 2.3 higher than that of condition 2, but the deposition rate of particulate matter was smaller than that of condition 2, and the biggest difference could be as high as 9, but the average diameter of particles deposited under condition 1 was 40.7 smaller than that of condition 2, and the average diameter of escaping particles was 14.3cm.
【作者单位】：东南大学能源热转换及其过程测控教育部重点实验室;
【基金】：国家自然科学基金青年基金项目(No.51606041) 江苏省自然科学基金青年基金项目(No.BK20160688)
【分类号】：R318

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