Incorporation of Nasal-Lining Mass-Transfer Resistance into Acfd Model for Prediction of Ozone Dosimetry in the Upper Respiratory Tract

1996 ◽  
Vol 8 (9) ◽  
pp. 831-857 ◽  
Author(s):  
Elaine A. Cohen Hubal ◽  
Julia S. Kimbell ◽  
Peter S. Fedkiw
Keyword(s):  
Mass Transfer ◽  
Respiratory Tract ◽  
Upper Respiratory Tract ◽  
Mass Transfer Resistance ◽  
Transfer Resistance ◽  
Upper Respiratory

Measurement of Local Mass Transfer Coefficients in a Cast Model of the Human Upper Respiratory Tract

1986 ◽  
Vol 108 (1) ◽  
pp. 12-18 ◽  
Author(s):  
L. M. Hanna ◽  
P. W. Scherer
Keyword(s):  
Mass Transfer ◽  
Respiratory Tract ◽  
Nasal Cavity ◽  
Upper Respiratory Tract ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Local Mass ◽  
Local Mass Transfer ◽  
Cast Model ◽  
Upper Respiratory

Local mass transfer coefficients measured using the naphthalene sublimation technique in an acrylic cast model of the human upper respiratory tract are reported as the Sherwood numbers for the corresponding regions. A steady air flow rate of 12 L per min was used for all measurements. Values of the Sherwood number are seen to be highest in the nasal cavity and proximal nasopharynx while a minimum value occurs just downstream from the larynx. Local values of the Nusselt number obtained in the trachea and proximal nasal cavity assuming a complete heat and mass transfer analogy agree well with in-vivo physiological measurements. The mass transfer coefficients found can be incorporated into an analytical model of respiratory heat and water vapor transfer or into a model of pollutant gas uptake in the respiratory tract.

Allergy of the Upper Respiratory Tract

1970 ◽  
Vol 3 (2) ◽  
pp. 265-276 ◽  
Author(s):  
Jack D. Clemis ◽  
Eugene L. Derlacki
Keyword(s):  
Respiratory Tract ◽  
Upper Respiratory Tract ◽  
Upper Respiratory
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