Thesis
Factors influencing the switching of supersonic gas jets
- Creator
- Rights statement
- Awarding institution
- University of Strathclyde
- Date of award
- 1967
- Thesis identifier
- T86(1967)
- Qualification Level
- Qualification Name
- Department, School or Faculty
- Abstract
- The phenomenon of boundary layer separation is used to advantage in the operation of a high pressure, bistable, fluid switch. It has been shown that jets of air expanded through a non-adapted, convergent-divergent, two-dimensional duct at pressure ratios in excess of critical, can be encouraged to change their flow vector by the transverse introduction of further air at atmospheric pressure via strategically positioned control ports. The position of separation and reattachment of the main jet have been determined experimentally by the measurement of pressure along the flow boundaries and verified by the Schlieren process. A new theory has been evolved fully describing the conditions appertaining to the flow situation immediately upstream of the point of separation of a supersonic turbulent boundary layer under the duress of an adverse pressure gradient. The derivation is also applicable to supersonic, laminar boundary layers. It is considered that the concept applied to the switching of supersonic jets is original, as is the theoretical approach to boundary layer separation and therefore provide an extension of knowledge in this field.
- Advisor / supervisor
- McHutchison, W. B.
- Resource Type
- DOI
- EThOS ID
- uk.bl.ethos.850259
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