Numerical Simulation of the Flow and Concentration Fields for Oxygen Delivery Systems-Reference-Cited by-同舟云学术

Numerical Simulation of the Flow and Concentration Fields for Oxygen Delivery Systems

Published:2003-10-01 Issue:5 Volume:125 Page:648-662
ISSN:0148-0731
Container-title:Journal of Biomechanical Engineering
language:en
Short-container-title:

Author:

Hangan H.¹,Bekele S.¹

Affiliation:

1. The Boundary Layer Wind Tunnel Laboratory, The University of Western Ontario, London, Ontario, Canada

Abstract

The flow and concentration fields for various medical oxygen delivery devices are numerically investigated. Simulations are performed for a classical Venturi mask and two new OxyArm portable devices. The velocity and oxygen concentration fields are investigated for: (i) a constant (steady-state) inhalation and (ii) a complete respiratory cycle (unsteady). The numerical results are qualitatively compared with clinical trials. It is found that the optimal functioning of these medical devices implies a balance between oxygen delivery by advection and the mixing process that allows for reliable CO2 monitoring (capnographic capability). Also, at the typical scales associated with these devices the flow is found to be Reynolds number dependent.

Publisher

ASME International

Subject

Physiology (medical),Biomedical Engineering

Link

http://asmedigitalcollection.asme.org/biomechanical/article-pdf/125/5/648/5768587/648_1.pdf

Reference12 articles.

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3. Goldstein, R. S., Young, J., and Rebuck, A. S., 1982, “Effect of Breathing Pattern on Oxygen Concentrations Received From Standard Face Masks,” Lancet, November 27, pp. 1188–1190.

4. Jeffrey, A. A., and Warren, P. M., 1992, “Should We Judge a Mask by Its Cover?” Thorax, July, pp. 543–546.

5. Senn, S., Wanger, J., Fernandez, E., and Chernuack, R. M., “Efficacy of a Pulsed Oxygen Delivery Device During Exercise in Patients With Chronic Respiratory Disease,” Chest, 96, pp. 467–472.

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