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dc.contributor.authorHeinze, Thomas
dc.date.accessioned2010-10-12T19:27:58Z
dc.date.available2010-10-12T19:27:58Z
dc.date.issued2009
dc.identifier.urihttp://hdl.handle.net/11858/00-1735-0000-0001-3186-3
dc.description.abstractThis thesis describes the adaptive shallow water model PLASMA-FEMmE. It solves on the sphere the shallow water equations, the prototype for partial differential equations in atmospheric modeling, using a semi-implicit semi-Lagrangian time step and linear finite elements. Both statically and dynamically adapted grids created by the grid generator amatos are investigated. The results are compared with those of the predecessor model FEMmE that uses a static uniform grid. The outcome demonstrates the capability of the chosen approach as well as its limits. Grid adaptation can easily be achieved with amatos. No reflexions at the grid interfaces are observed. Though in one test case instabilities are released at the grid interfaces. The numerical errors are reduced without a considerable enhancement of the computational effort in another test case with a well-known analytical solution. In respect to the conservation properties the results are more complicated. Mass conservation can be achieved in one test case with an appropriate static grid. In case of complex flow regimes all conservation properties are weakened during the simulation using dynamic grid adaptation...
dc.format.extent135 S.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherUniv. Bremen
dc.rights.urihttp://e-docs.geo-leo.de/rights
dc.subject.ddc532.5
dc.subject.ddc551.46
dc.subject.ddc550
dc.titleAn adaptive shallow water model on the sphere
dc.typemonograph
dc.subject.gokverbalMeteorologische Modelle
dc.subject.gokverbalFluiddynamik {Geophysik}
dc.identifier.doi10.23689/fidgeo-253
dc.identifier.ppn599295341
dc.identifier.urnurn:nbn:de:gbv:46-diss000112953
dc.type.versionpublishedVersion
dc.relation.collectionGeophysik
dc.description.typethesis


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