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SUMMARY:Adaptive Numerical Simulation of Idealized Cyclones - Beck\, T (Ka
 rlsruhe Institute of Technology (KIT))
DTSTART:20120823T103000Z
DTEND:20120823T113000Z
UID:TALK39373@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:The processes causing a cyclone's formation\, its intensificat
 ion\, its motion and finally its terminating all proceed at multiple and i
 nteracting temporal and spatial scales. Therefore the forecasting of a cyc
 lone's dynamic can make great benefits of adaptive techniques such as loca
 l mesh refinement. Mesh adaptation strategies are often based on problem-d
 ependent indicators that need to be determined and which have different pr
 operties with respect to the associated computational effort and the quali
 ty of the resulting meshes. For example\, the computation of goal-oriented
  error indicators requires sensitivity information provided by the solutio
 n of an additional linear problem which leads to a remarkable overhead in 
 computation time and additional storage requirements. In that context\, we
  address the question whether the complexity of different criteria for ref
 inement is justifiable. To this end\, we investigate idealized cyclone sce
 narios and systematically analyze the efficiency of adaptive numerical met
 hods employing a selection of different indicators based on physical crite
 ria\, heuristic criteria\, a posteriori error estimators\, and goal-orient
 ed approaches. We compare these approaches with regard to the related comp
 utational costs\, storage requirements\, implementation complexity\, and t
 he accuracy of the resulting solution.\n
LOCATION:Seminar Room 1\, Newton Institute
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