Show simple item record Richards, Matthew Lee 2017-03-17T20:06:14Z 2017-03-17T20:06:14Z 12-14-2016
dc.description Thesis (M.S.) Applied Mathematics with a Concentration in Dynamical Systems
dc.description.abstract We investigate obstructed flow in a quantum superfluid. Utilizing a flattened 2D Bose-Einstein condensate whose dynamics are prescribed by the Gross-Pitaevskii equation in a co-moving reference frame, we show that the superfluid Reynolds number characterizes the wake patterns behind the obstacle. Furthermore, by combining a fringe damping region and a boundary condition derived to emulate far-field conditions, we develop stable absorbing boundary conditions for a 2D BEC that allow simulations in the supersonic flow regime. The absorbing boundary conditions are tested for a wide range of situations whereby multiple vortices and radiation waves are succesfully absorbed at the boundary. Additionally, these absorbing boundary conditions, are very straightforward to implement.
dc.format.extent xi, 48 pages : illustrations (some color).
dc.language.iso en_US
dc.publisher San Diego State University
dc.subject.lcc QA2.2
dc.title Vortex generation at the wake of an impurity in a quantum superfluid 2017-03-17T19:09:35Z
dc.type.genre Thesis Thesis (M.S.) San Diego State University, 2016.
dc.description.discipline Thesis (M.S.) Applied Mathematics with a Concentration in Dynamical Systems
dc.contributor.committeemember Carretero, Ricardo
dc.contributor.committeemember Curtis, Christopher
dc.contributor.committeemember Anderson, Matt

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