Dorrington K L, Ralph M E, Bellhouse B J, Gardaz J P, Sykes M K
J Biomed Eng. 1985 Apr;7(2):89-99. doi: 10.1016/0141-5425(85)90036-6.
Gas transfer performance is presented for one form of the Oxford membrane lung in which vortex mixing is induced in blood flow across a dimpled polypropylene membrane. Dimensional analysis has been used to define the parameters characterizing mass transfer in the device, and of three fluid mechanical parameters: Reynolds number based on peak pulsation velocity, Strouhal number, and ratio of mean to oscillatory flows, only the first has been found to affect mass transfer significantly in the ranges studied. For oxygenation, rated flows in excess of 5 l min-1 m-2 are measured. A new definition is presented for a rated flow for extracorporeal CO2 removal and values in excess of 1.2 l min-1 m-2 are obtained.
本文介绍了一种牛津膜肺的气体传输性能，该膜肺通过在有凹坑的聚丙烯膜表面形成的血流中诱导涡流混合来实现气体传输。采用量纲分析来定义该装置中表征传质的参数，在所研究的范围内，三个流体力学参数（基于峰值脉动速度的雷诺数、斯特劳哈尔数以及平均流与振荡流的比值）中，只有第一个参数对传质有显著影响。对于氧合，测得的额定流量超过5 l min-1 m-2。本文给出了体外二氧化碳清除额定流量的新定义，并得到了超过1.2 l min-1 m-2的值。
