Hanna L M, Scherer P W
J Biomech Eng. 1986 Feb;108(1):12-8. doi: 10.1115/1.3138573.
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.
利用萘升华技术在人体上呼吸道的丙烯酸铸型模型中测得的局部传质系数，以相应区域的舍伍德数表示。所有测量均采用每分钟12升的稳定空气流速。舍伍德数的值在鼻腔和鼻咽近端最高，而在喉的下游刚好出现最小值。假设完全的传热传质类比，在气管和鼻腔近端获得的努塞尔数局部值与体内生理测量结果吻合良好。所发现的传质系数可纳入呼吸热和水蒸气传递的分析模型，或纳入呼吸道中污染气体吸收的模型。
