Table 2.

Respiratory parameters used in the CFD modeling.

Age group	Tidal volume (mL)	Respiratory rate (breaths/min)	Minute ventilation (mL/min)	Inspiration-to-expiration time ratio	Inspiratory flow rate (L/min)	Expiratory flow rate (L/min)
Infant	39	36	1404	1 : 1.5	3.51	2.34
Child	181	20	3620	1 : 1.7	9.77	5.75
Adult	500	14	7000	1 : 1.7	18.90	11.12