Abstract
Approximate methods for evaluating oxygen transfer in extracorporeal devices are considered. It is shown that the constant slope approach and the advancing front concept can be used to bracket the exact solution. Generalization of the constant slope approach allows the use of available correlations for heat or mass transfer. In the case of complicated geometries for which no correlations exist, the method shows how one can experiment with different fluids and gases and estimate performance of the device as a blood oxygenator.
Analytical expressions for some typical geometries using the advancing front approach are presented. These expressions show good agreement with experimental data and with an available computer solution which includes nonlinearities of the dissociation curve.
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Mikic, B.B., Benn, J.A. & Drinker, P.A. Upper and lower bounds on oxygen transfer rates. Ann Biomed Eng 1, 212–220 (1972). https://doi.org/10.1007/BF02584208
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DOI: https://doi.org/10.1007/BF02584208