Large-Scale Ocean Modeling on Unstructured Meshes Seminar
For more information regarding this seminar, please telephone Aurelie Duchez and Gerard McCarthy on +44 (0) 23 80596175 .
Event details
Unstructured meshes in the context of large-scale ocean modeling offer geometric flexibility and the possibility of local refinement in a global configuration without nesting. Simulations performed with FESOM (Finite Element Sea-ice Ocean circulation Model) show that this approach is useful in many situations enabling local refinement by a factor up to 50. Brief review of studies of processes in CAA, Arctic and Southern Oceans performed recently with FESOM at AWI will be presented.
On the mathematical and technical sides unstructured meshes present a number of challenges, partly related to the mesh geometry and the arrangement of degrees of freedom, and partly to a noticeably higher cost per degree of freedom (which, however, can be used more efficiently). They will be briefly mentioned together with the analysis of most promising approaches. While there is ongoing work on testing new discretizations, the existing approaches are mature enough to be used in practice. Unstructured-mesh models do not aim at replacing regular-grid models. They propose a convenient framework for studies where regional dynamics is of interest.
Speaker information
Sergey Danilov, Alfred Wegener Institute, Bremerhaven, Germany. Alfred graduated from the Department of General and Applied Physics of Moscow Institute of Physics and Technology (MIPT) in 1982 and spent three further years at the same institution as a post graduate student. In January 1986 Alfred obtained a Ph.D degree in physics and mathematics from the Acoustical Institute of USSR Academy of Sciences. His thesis dealing with the radiation force on small particles in acoustic field and acoustical streamings. Since September 1985 Alfred began to work at the A.M. Obukhov Institute of Atmospheric Physics (OIAP), Moscow, and since January 2001, at the AWI, while still continuing to be associated with OIAP.