Assessing Modeled Retention and Rebreathing of a Facemask Designed for Efficient Delivery of Aerosols to Infants
Figure 2
One-dimensional (approximate) model of mask. : mass flow of the inhaled and exhaled gas by the baby, : mass inside the mask, : mass flow of the gas exchanged via the open ventilation holes of the PARI SMARTMASK® Baby. The dot over the m denotes the deviation over time (dm/dt). The direction of the arrows indicates the direction of the mass flow in the one-dimensional, simplified analysis. If the value of the function is positive, the flow goes in the direction of the arrows (into the mask) and if the value of the function becomes negative, the flow goes out of the mask.
