Difference between revisions of "SC²S Colloquium - November 9, 2017"

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(Created page with "{| class="wikitable" |- | '''Date:''' || November 9, 2017 |- | '''Room:''' || 03.09.012 |- | '''Time:''' || 4:00 pm, s.t. |- |} == Markus Fabry: Hierarchical Clustering of Tr...")
 
 
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== Markus Fabry: Hierarchical Clustering of Trajectories with Sparse Grid Regression ==
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== Gerasimos Chourdakis: A general OpenFOAM adapter for the coupling library preCICE ==
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The thesis introduces a clustering algorithm for trajectories aproximated with sparse grids. The learner builder extension of the SG++ toolkit is used to perform regression to obtain a functional representation of the trajectory data. The regression uses the hierarchical basis with adaptive refinement and modified basis functions to minimize the amount of grid points. Comparison and transformation of the trajectories into feature space can be accomplished with a variety of metrics, two of which are discussed in detail. To discover local groupings of trajectories, a hierarchical approach is used. The hierarchy splits the trajectories into more and more segments with each successive level. Each segment is then clustered separately using DBSCAN and compared to the corresponding segment of the previous level. If they are on average sufficiently different to the previous level, the splitting continues. Otherwise, the previous level is selected as the final split.
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The coupling library preCICE allows to combine multiple simulations, enabling them to efficiently work together on their shared interfaces. Ιn order to use a solver with preCICE we need an adapter, which provides access to the solver’s interface data and control elements. A variety of OpenFOAM solvers has previously been adapted for preCICE, using adapters specially tailored to each solver. This final master's thesis talk will present a general, solver-agnostic, and extensible OpenFOAM adapter for preCICE that does not require any changes to the solver's source code and can be loaded at runtime.
  
 
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Latest revision as of 12:14, 6 November 2017

Date: November 9, 2017
Room: 03.09.012
Time: 4:00 pm, s.t.

Gerasimos Chourdakis: A general OpenFOAM adapter for the coupling library preCICE

The coupling library preCICE allows to combine multiple simulations, enabling them to efficiently work together on their shared interfaces. Ιn order to use a solver with preCICE we need an adapter, which provides access to the solver’s interface data and control elements. A variety of OpenFOAM solvers has previously been adapted for preCICE, using adapters specially tailored to each solver. This final master's thesis talk will present a general, solver-agnostic, and extensible OpenFOAM adapter for preCICE that does not require any changes to the solver's source code and can be loaded at runtime.

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