Mass transfer across a deformable interface with instantaneous reversible reaction

✍ Scribed by J.A. Dindorf; E.N. Lightfoot

• Publisher: Elsevier Science
• Year: 1971
• Tongue: English
• Weight: 494 KB
• Volume: 26
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(71)86027-x

✦ Synopsis

A boundary-layer analysis is presented for oxygen transfer to blood across a deformable gas-liquid interface. This analysis, applicable to all direct-contact oxygenators used by clinicians, requires only fluid-mechanic data for calculation of mass-transfer coefficients.

Exact numerical solutions of the boundary-layer equations are presented both for physiological and heart-lung bypass conditions. These solutions are useful for the rating of oxygenators, where a high degree of accuracy is required.

Closed-form upper-and lower-bounding solutions are also presented which differ from their mean by no more than 20 per cent. These bounding solutions permit generalization of the penetration theory to all situations of diffusion with instantaneous chemical reaction across a deformable interface.

This paper extends previous work on blood oxygenation by considering stretching and shrinking of the interface, by providing upper-and lower-bounding solutions, and by extending the range of available numerical calculations.