Date of Award

Spring 1982

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)

Department

Mechanical Engineering

First Advisor

Linehan, John

Second Advisor

Hamilton, Lyle

Third Advisor

Weber, Robert

Abstract

This thesis contains an engineering evaluation of a delivery system (endotracheal tube (ET)) for a high frequency jet ventilator. The delivery system is a plastic tube, open at both ends, that contains a smaller diameter tube that carries regulated air from the ventilator. It is shown, using available commercial prototype ETs, that a steady flow of air through the ET is fluid dynamically similar to the flow of air through the system during time variant use; hence all experiments in the engineering evaluation of the ET were performed using steady flow instead of time variant flow . An experimental test section was used during the experiments requiring a moveable jet or moveable pressure port. A study was conducted that shows that as the jet is moved proximal to the distal end of the ET, entrainment is increased until the jet reached a distance of approximately 2,5 cm proximal. Another study shows that as back pressure to the ET is increased above atmospheric, the amount of entrained air decreases. Wall pressure profiles for the inside of the ET are plotted for different jet locations and different values of the driving pressure for the jet.

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