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dc.contributor.advisorSinibaldi, Jose. O.
dc.contributor.advisorBrophy, Christopher M.
dc.contributor.authorHo, Ivan Chin Kian.
dc.date.accessioned2012-03-14T17:41:51Z
dc.date.available2012-03-14T17:41:51Z
dc.date.issued2009-12
dc.identifier.urihttp://hdl.handle.net/10945/4423
dc.description.abstracthermodynamic efficiencies based on the Humphrey cycle. One of the limitations in fielding practical designs has been attributed to tube diameters not exceeding 5 inches as the shock wave takes a long run distance for transition to detonation, thus potentially affecting specific thrust. Novel methods via imploding detonations were investigated to remove such limitations. During the study, a practical computational cell size was first determined so as to capture the required physics for transient detonation wave propagation using a Hydrogen-Air test case. Through a grid sensitivity analysis, one-quarter of the induction length was found sufficient to capture the experimentally observed initial wave transients. Test case models utilizing axisymmetric head-on implosions were studied in order to understand how the implosion process reinforces a detonation wave as it expands. This in effect creates localized overdriven regions, which maintains the transition process to full detonation. A parametric study was also performed to determine the extent of diameter increase and it was found that the detonations could be supported with no change in run distance even when the tube diameter exceeds 5 inches.en_US
dc.description.urihttp://archive.org/details/investigationonn109454423
dc.format.extentxvi, 95 p. : ill. ;en_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.subject.lcshEngineeringen_US
dc.subject.lcshPhysicsen_US
dc.subject.lcshCombustionen_US
dc.titleInvestigation on novel methods to increase specific thrust in pulse detonation engines via imploding detonationsen_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.description.serviceTechnology Agency (Singapore) author (civilian).en_US
dc.identifier.oclc503114703
etd.thesisdegree.nameM.S.en_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineMechanical Engineering and Applied Physicsen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.verifiednoen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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