Darmstadt 2016 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 2: RF, Resonators and Applications I

AKBP 2.6: Talk

Monday, March 14, 2016, 15:15–15:30, S1/05 24

YACS - Progression Towards Isoparametric 2.5D Finite Elements — •Benjamin Dirk Isbarn, Bernard Riemann, Malte Sommer, and Thomas Weis — TU Dortmund University (DELTA), Center for Synchrotron Radiation, Maria-Goeppert-Mayer-Str. 2, 44221 Dortmund

YACS is a 2.5D finite element method solver capable of solving for the full 3D eigenfrequency spectra of resonant axisymmetric structures while reducing the computational problem to a 2D rotation plane. Prior studies and benchmarks comparing YACS to well known commercial 3D and 2D applications already demonstrated its feasibility of performing fast optimizations of geometries due to its minimal computational overhead. However, because of the first order approximation of the basis functions and reference triangle, this solving speed advantage vastly diminishes when targeting higher accuracies. In order to circumvent these issues we chose to upgrade YACS to support arbitrary order basis functions and curved quadrilateral meshes leading to, but not limited to, isoparametric finite elements. We will present first performance benchmarks on a reduced 2D problem along with comparisons to commercial applications.