Low Reynolds number viscous flow in an alveolated duct

被引:45
作者
Karl, A
Henry, FS
Tsuda, A
机构
[1] Harvard Univ, Sch Publ Hlth, Dept Environm Hlth, Physiol Program, Boston, MA 02115 USA
[2] City Univ London, Sch Engn & Math Sci, London EC1 V0HB, England
[3] Univ Stuttgart, Inst Thermodynam Luft & Raumfahrt, D-70550 Stuttgart, Germany
来源
JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME | 2004年 / 126卷 / 04期
关键词
D O I
10.1115/1.1784476
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
Flow visualization studies and supplementary numerical simulations are carried out on slow flow through a model alveolated duct. The results reveal that the type of flow that develops in the alveoli, or cavities, is controlled by the ratio of the depth to the width of the cavity and by the ratio of cavity volume to duct volume. While weak, the slowly rotating flow in the cavity is thought to be important to the convective transport of heat and mass transfer to, or from, the walls of the cavity. The relevance of these finding to particle transport and deposition deep in the lung is discussed.
引用
收藏
页码:420 / 429
页数:10
相关论文
共 23 条
[1]  
ANDERSON DA, 1984, COMPUTATIONAL FLUID, P130
[2]  
Batchelor David., 2000, An Introduction to Fluid Dynamics
[3]  
BRIAN JD, 1989, PROVOCATIVE CHALLENG, P1
[4]  
BURRI PH, 1985, PHYSL HDB RESP SYSTE, V1, P1
[5]  
DARQUENNE C, 1996, J APPL PHYSIOL, V80, P2889
[6]  
FREDERSPIEL WJ, 1988, J APPL PHYSIOL, V64, P2414
[7]  
Friedlander S. K., 1977, Smoke, Dust and Haze: Fundamentals of Aerosol Behavior
[8]   Gravitational deposition in a rhythmically expanding and contracting alveolus [J].
Haber, S ;
Yitzhak, D ;
Tsuda, A .
JOURNAL OF APPLIED PHYSIOLOGY, 2003, 95 (02) :657-671
[9]  
HAEFLIBLEUER B, 1988, ANAT REC, V220, P440
[10]   Kinematically irreversible acinar flow: A departure from classical dispersive aerosol transport theories [J].
Henry, FS ;
Butler, JP ;
Tsuda, A .
JOURNAL OF APPLIED PHYSIOLOGY, 2002, 92 (02) :835-845