期刊文献+

人体上呼吸道模型内气流和颗粒沉积的大涡模拟 被引量:5

Large-eddy simulation of airflow and particle deposition in a human upper airway model
下载PDF
导出
摘要 为探索人体呼吸道内的气体流动和颗粒的运动沉积规律,建立了一个从口腔到前三级支气管的三维几何模型,采用大涡模拟方法计算了此复杂几何结构内的气体流动,并在拉格朗日框架下研究了颗粒的运动现象.讨论了在呼气和吸气过程中不同横截面的流动分布规律,统计了在不同工况下颗粒在呼吸道模型内各部位的沉积率.分析结果表明,不同级气管横截面的流动结构存在很大差异,颗粒沉积率主要受到呼吸强度与颗粒惯性的影响.为验证模型和模拟结果的正确性,将模拟得到的沉积率和文献中的实验数据进行了比较,两者吻合良好. A three-dimensional geometry model from mouth to fore-three-generation bronchi was built to investigate the airflow and particle deposition in human respiratory tract. Large-eddy simulation of airflow in this complex geometry model which representing human upper airway was conducted, and the particle transport was studied under Lagrange frame. Then the airflow distributions at the cross sections of different generation trachea during inhalation and exhalation were discussed, and the particle deposition efficiency in various regions under different cases was predicted and analyzed. The results showed very different airflow structure at the cross sections of different generation trachea during inhalation and exhalation, and the particle deposition efficiency was impacted by the inflow velocity and particle inertia. The particle deposition efficiency from model prediction and experimental data agreed well, which validated the correctness of the mathematical model and simulation.
出处 《浙江大学学报(工学版)》 EI CAS CSCD 北大核心 2007年第9期1582-1586,共5页 Journal of Zhejiang University:Engineering Science
基金 国家自然科学基金资助项目(50776082) 浙江省自然科学基金重点资助项目(Z505050) 中国博士后科学基金资助项目(20060391043)
关键词 气流 颗粒沉积 人体上呼吸道模型 大涡模拟 airflow particle deposition human upper airway model large-eddy simulation
  • 引文网络
  • 相关文献

参考文献7

  • 1ZHANG Z,KLEINSTREUER C,KIM C S.Micro-particle transport and deposition in a human oral airway model[J].Journal of Aerosol Science,2002,33(12):1635-1652.
  • 2ZHANG Z,KLEINSTREUER C,KIM C S.Gas-solid two-phase flow in a triple bifurcation lung airway model[J].International Journal of Multiphase Flow,2002,28(6):1021-1046.
  • 3MOSKAL A,GRADON L.Temporary and spatial deposition of aerosol particles in the upper human airways during breathing cycle[J].Journal of Aerosol Science,2002,33(11):1525-1539.
  • 4NOWAK N,KAKADE P,ANNAPRAGADA A.Computational fluid dynamics simulation of airflow and aerosol deposition in human lungs[J].Annals of Biomedical Engineering,2003,31(4):374-390.
  • 5MATIDA E A,FINLAY W H,LANGE C F.Improved numerical simulation of aerosol deposition in an idealized mouth-throat[J].Journal of Aerosol Science,2004,35(1):1-19.
  • 6曾敏捷,胡桂林,郑峰,樊建人.电厂排放烟气中的小颗粒在呼吸道内运动沉积的数值模拟[J].能源工程,2005,25(3):36-41. 被引量:6
  • 7GRGIC C,FINLAY W H,HEENAN A F.Regional aerosol deposition and flow measurements in an idealized mouth and throat[J].Journal of Aerosol Science,2004,35(1):21-32.

二级参考文献5

  • 1Z Zhang, C Kleinstreuer, C S Kim. Micro-particle transport and deposition in a human oral airway model[J]. Journal of Aerosol Science, 2002, 33: 1635-1652.
  • 2Z Zhang , C Kleinstreuer, C S Kim. Gas- solid twophase flow in a triple bifurcation lung airway mode [J]. International Journal of Multiphase Flow, 2002,28:1021-1046.
  • 3K W Stapleton, E Guentsch, M K Hoskinson, et al.On the suitability of κ - ε turbulence modeling for aerosol deposition in the mouth and throat: A comparison with experiment [ J ]. Journal of Aerosol Science,2000, 31(6): 739-749.
  • 4B Grgic, W H Finlay, A F Heenan. Regional aerosol deposition and flow measurements in an idealized mouth and throat [ J]. Journal of Aerosol Science,2004, 35: 21-32.
  • 5黄伟,骆仲泱,徐鸿,王涛,王鹏,方梦祥,高翔,岑可法.电厂排放烟气中的小颗粒分布及多环芳烃研究[J].能源工程,2003,23(2):29-32. 被引量:9

共引文献5

同被引文献65

引证文献5

二级引证文献18

;
使用帮助 返回顶部