Calculate the Reynolds number for the bronchial generations and identify if the flow is laminar or turbulent.  Generation 0  Generation 1  Generation 2

Elements Of Electromagnetics
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Calculate the Reynolds number for the bronchial generations and identify if the flow is laminar or turbulent.
 Generation 0
 Generation 1
 Generation 2

Table Approximate quantification of the bronchial system.
pulmonary branch
generation branch branch
diameter length
(mm)
total
volume
air
(cm³) speed
(cm/s)
cross-
(mm) sectional
area (cm²)
trachea
main bronchus
18.0
120.0
2.5
31
393
427
1
12.2
47.6
2.3
11
lobar bronchus
8.3
19.0
2.1
4.0 462
3
5.6
7.6
2.0
1.5 507
segmental bronchus
4
4.5
12.7
2.5
3.5 392
5
3.5
10.7
3.1
3.3 325
bronchi
2.8
9.0
4.0
3.5 254
w/cartilage in wall
2.3
7.6
5.1
3.8 188
8
1.86
6.4
7.0
4.4 144
1.54
5.4
9.6
5.2 105
10
1.30
4.6
13
6.2
73.6
terminal bronchus
11
1.09
3.9
20
7.6
52.3
12
0.95
3.3
2.7
29
9.8
34.4
bronchioles
13
0.82
44
12
23.1
w/muscle in wall
14
0.74
2.3
69
16
14.1
15
0.66
2.0
113
22
8.92
terminal bronchiole
16
0.60
1.65
180
30
5.40
respiratory bronchiole
respiratory bronchiole
respiratory bronchiole
alveolar duct
17
0.54
1.41
300
42
3.33
18
0.50
1.17
534
61
1.94
19
0.47
0.99
944
93
1.10
20
0.45
0.83
1,600
139
0.60
alveolar duct
21
0.43
0.70
3,200
224
0.32
alveolar duct
22
0.41
0.59
5,900
350
0.18
alveolar sac
23
0.41
0.50
12,000
591
0.09
alveoli, 21 per duct
0.28
0.23
3,200
The air speed is assumed to be 1L/s. The data include that for both lungs. The
number in each generation is 2- (for generations z = 0–23), and 300 × 10° for the
alveoli.
Transcribed Image Text:Table Approximate quantification of the bronchial system. pulmonary branch generation branch branch diameter length (mm) total volume air (cm³) speed (cm/s) cross- (mm) sectional area (cm²) trachea main bronchus 18.0 120.0 2.5 31 393 427 1 12.2 47.6 2.3 11 lobar bronchus 8.3 19.0 2.1 4.0 462 3 5.6 7.6 2.0 1.5 507 segmental bronchus 4 4.5 12.7 2.5 3.5 392 5 3.5 10.7 3.1 3.3 325 bronchi 2.8 9.0 4.0 3.5 254 w/cartilage in wall 2.3 7.6 5.1 3.8 188 8 1.86 6.4 7.0 4.4 144 1.54 5.4 9.6 5.2 105 10 1.30 4.6 13 6.2 73.6 terminal bronchus 11 1.09 3.9 20 7.6 52.3 12 0.95 3.3 2.7 29 9.8 34.4 bronchioles 13 0.82 44 12 23.1 w/muscle in wall 14 0.74 2.3 69 16 14.1 15 0.66 2.0 113 22 8.92 terminal bronchiole 16 0.60 1.65 180 30 5.40 respiratory bronchiole respiratory bronchiole respiratory bronchiole alveolar duct 17 0.54 1.41 300 42 3.33 18 0.50 1.17 534 61 1.94 19 0.47 0.99 944 93 1.10 20 0.45 0.83 1,600 139 0.60 alveolar duct 21 0.43 0.70 3,200 224 0.32 alveolar duct 22 0.41 0.59 5,900 350 0.18 alveolar sac 23 0.41 0.50 12,000 591 0.09 alveoli, 21 per duct 0.28 0.23 3,200 The air speed is assumed to be 1L/s. The data include that for both lungs. The number in each generation is 2- (for generations z = 0–23), and 300 × 10° for the alveoli.
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