A Patient-Specific Airway Branching Model for Mechanically Ventilated Patients

Table 2

Physical measurements of bronchial paths [12].

Branch generations	Diameter (mm)	Length (mm)	Reynolds number
−1 (ETT)	9	330	390
0 (tracheal)	18	120	775
1	12.20	48	573
2	8.30	19	427
3	5.60	8	307
4	4.50	13	198
5–16	3.50–0.60	10.70–1.70	123–0.60
17–22	0.57–0.43	1.50–0.63	0.56–0.41
23	0.40	0.50	0.02