Characterization of Transient Pressure Loads in the Reservoir of a Hypersonic Blowdown Tunnel

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dc.contributor.advisorLewis, Mark Jen_US
dc.contributor.authorSmith, Kerrie Anneen_US
dc.contributor.departmentAerospace Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2005-08-03T14:43:35Z
dc.date.available2005-08-03T14:43:35Z
dc.date.issued2005-05-03en_US
dc.description.abstractWhen flow through a hypersonic blowdown tunnel is initiated by the bursting of a diaphragm, expansion of the process gas into the downstream vacuum of the facility creates a strong rarefaction wave. This rarefaction propagates upstream, generating significant pressure drops in upstream components, such as a heater. These pressure drops can be attenuated with the use of a metering orifice, which requires an accurate prediction of the pressure drop for proper sizing. So as to be generally applicable and to provide physical insight, a closed-form or simple numerical solution for determining this pressure drop is preferred over computational fluid dynamics. Three methods are investigated: acoustic reflection, flow pattern assumption, and the Method of Characteristics. By examining the three methods in conjunction, tradeoffs between complexity and physical accuracy can be analyzed. Ultimately, this study shall lead to the design of an experiment to verify the accuracy of the three methods.en_US
dc.format.extent1322456 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/2540
dc.language.isoen_US
dc.subject.pqcontrolledEngineering, Aerospaceen_US
dc.subject.pquncontrolledhypersonicen_US
dc.subject.pquncontrolledwind tunnelen_US
dc.subject.pquncontrolledunsteadyen_US
dc.subject.pquncontrolledaerodynamicsen_US
dc.subject.pquncontrolledpressure loading;en_US
dc.titleCharacterization of Transient Pressure Loads in the Reservoir of a Hypersonic Blowdown Tunnelen_US
dc.typeThesisen_US

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