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Oblique shock interactions with gas cylinder interfaces


Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/21012

Oblique shock interactions with gas cylinder interfaces

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dc.contributor.author White, Ross
dc.date.accessioned 2012-08-27T21:57:20Z
dc.date.available 2012-08-27T21:57:20Z
dc.date.issued 2012-08-27
dc.date.submitted July 2012
dc.identifier.uri http://hdl.handle.net/1928/21012
dc.description.abstract This thesis presents an experimental study of fluid instabilities formed due to an oblique interatction of a shock wave with a cylindrical gas column seeded with glycol droplets. Two gases are injected into quiescent air to form the column. The first is sulfur hexafluoride (SF6) which generates the well-known Richtmyer-Meshkov Instability (RMI) when impulsively accelerated by a shock wave. This instability is formed due to the misalignment of the pressure and density gradients during the acceleration phase. The second is air. In this case, there is no macroscopic density gradient between the gas column and the surrounding air. Nonetheless, an instability similar to RMI develops due to the presence of the glycol droplets. Experimental studies are performed at an oblique angle of 15 degrees and a Mach number of 1.67. Experiments of this nature typically make an assumption that the cylindrical gas column is nominally two-dimensional to simplify the problem. The validity of this assumption is explored by investigating the morphology of the instabilities in multiple horizontal planes and a vertical plane. Major variations of the morphology only occur near the bounding walls, with less variation far from these walls. An investigation of the rotation of the gas column is also presented. en_US
dc.description.sponsorship This work was funded by US National Nuclear Security Agency (NNSA) under the Stewardship Science Academic Alliances program through DOE Grant DE-PS52-08NA28920 and by the US Defense Threat Reduction Agency (DTRA) under awards HDTRA1-07-1-0036 and HDTRA1-08-1-0053. Without this funding, none of this work could have been performed. en_US
dc.language.iso en_US en_US
dc.subject Richtmyer Meshkov Instability en_US
dc.subject Particle Lag Instability en_US
dc.subject Oblique shock interaction en_US
dc.subject gas cylinder en_US
dc.subject.lcsh Unsteady flow (Fluid dynamics)
dc.subject.lcsh Shock (Mechanics)
dc.subject.lcsh Gas tubes.
dc.title Oblique shock interactions with gas cylinder interfaces en_US
dc.type Thesis en_US
dc.description.degree Mechanical Engineering en_US
dc.description.level Masters en_US
dc.description.department University of New Mexico. Dept. of Mechanical Engineering en_US
dc.description.advisor Vorobieff, Peter
dc.description.committee-member Kumar, Sanjay
dc.description.committee-member Poroseva, Svetlana
dc.description.committee-member Truman, C. Randall

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