SIMULTANEOUS SEDIMENTATION AND IMPACTION OF AEROSOLS IN 2-DIMENSIONAL CHANNEL BENDS

被引:9
作者
BALASHAZY, I
MARTONEN, TB
HOFMANN, W
机构
[1] US EPA,HLTH EFFECTS RES LAB,TOXICOL BRANCH,RES TRIANGLE PK,NC 27711
[2] DUKE UNIV,MED CTR,CTR EXTRAPOLAT MODELING,DURHAM,NC 27710
关键词
D O I
10.1080/02786829008959421
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A model is presented describing the simultaneous action of gravitational and inertial deposition forces on particles passing through a two-dimensional bend. The plane of the band is vertical, to simulate deposition in the upper airways of the tracheobronchial tree. The angle of curvature of the bend is variable, and its inlet can be at any angle to the horizontal. The direction of flow can be either upstream or downstream. The respective deposition efficiencies are computed for three different, idealized primary flows: (a) uniform flow; (b) radially dependent, or rotational flow; and, (c) parabolic flow. The results of these simulations are compared with available experimental data and theoretical predictions for calibration curves of aerosol impactors and for tracheobronchial deposition patterns in human lung models and casts. The relative shares of the gravitational and inertial deposition mechanisms in total deposition are also investigated. © 1990 United Kingdom Atomic Energy Authority.
引用
收藏
页码:20 / 34
页数:15
相关论文
共 41 条
[1]   THE EFFECT OF GRAVITY ON DEPOSITION DISTANCES IN AN INERTIAL PARTICLE SPECTROMETER [J].
AHARONSON, EF ;
DINAR, N .
JOURNAL OF AEROSOL SCIENCE, 1987, 18 (02) :193-202
[2]  
[Anonymous], 1965, ANESTHESIOLOGY
[3]  
BEECKMANS JM, 1985, CAN J PHYSL PHARM, V43, P157
[4]  
BELL KA, 1973, STAUB REINHALT LUFT, V33, P178
[5]   CALCULATION OF THE DEPOSITION DISTANCE IN THE INERTIAL SPECTROMETER [J].
BELOSI, F ;
PRODI, V .
JOURNAL OF AEROSOL SCIENCE, 1984, 15 (03) :382-385
[6]   PARTICLE DEPOSITION WITHIN THE INERTIAL SPECTROMETER [J].
BELOSI, F ;
PRODI, V .
JOURNAL OF AEROSOL SCIENCE, 1987, 18 (01) :37-42
[7]   CHARGE EFFECTS ON PARTICLE DEPOSITION IN THE HUMAN TRACHEOBRONCHIAL TREE [J].
CHAN, TL ;
YU, CP .
ANNALS OF OCCUPATIONAL HYGIENE, 1982, 26 (1-4) :65-75
[8]  
CHAN TL, 1980, AM IND HYG ASSOC J, V41, P339
[9]  
CHAN TL, 1978, J AEROSOL SCI, V6, P139
[10]   A MODEL FOR AEROSOL DEPOSITION IN THE HUMAN TRACHEOBRONCHIAL REGION [J].
CHENG, YS ;
YEH, HC .
AMERICAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL, 1981, 42 (11) :771-776