People

Merkel_Melina

Melina Merkel M.Sc.

Working area(s)

Model Order Reduction and Shape Optimization with Isogeometric Analysis

Contact

work +49 6151 16-24393

Work S2|17 33
Schloßgartenstr. 8
64289 Darmstadt

The research project addresses the multiphysical simulation and shape optimization of electrical machines based on Isogeometric Analysis (IGA) in three dimensions. Isogeometric analysis is based on the use of B-splines and nonuniform rational B-splines (NURBS) for both geometry representation and solution space instead of non-smoothly interconnected polynomials. These bases allow for the direct and approximation-free use of geometry data of computer-aided design (CAD), and therefore a simplified implementation of freeform optimization. In IGA, the solutions are also given in terms of splines, such that neither interpolation nor remeshing are necessary when considering the interaction between electromagnetic, thermal and mechanical phenomena and Noise-Vibration-Harshness calculations. Furthermore, for smooth solutions IGA has a higher accuracy per degree of freedom. This is especially relevant in the air gap of an electric machine, where the smoothness of the solution can be exploited. High numerical efficiency when considering rotation of the machine will be achieved by the use of mortaring, , e.g. by harmonic stator-rotor coupling.

  • 2016 EMTS young scientist award für den Beitrag ‘An Application of ParaExp to Electromagnetic Wave Problems’

2019

Melina Merkel ; Peter Gangl ; Sebastian Schöps ; Herbert De Gersem (2019):
Using Isogeometric Analysis for the Shape Optimization of Rotating Electric Machines Coupled by Harmonic Stator-Rotor Coupling.
In: VII International Conference on Isogeometric Analysis (IGA 2019), München. URL: http://congress.cimne.com/IGA2019/. [Talk]

Peter Gangl ; Melina Merkel ; Sebastian Schöps ; Herbert De Gersem (2019):
Shape Optimization of Rotating Electric Machines using Isogeometric Analysis and Harmonic Stator-Rotor Coupling.
In: 22nd Conference on the Computation of Electromagnetic Fields (COMPUMAG 2019), Paris, France. International Compumag Society. [Talk]

2018

Melina Merkel ; Zeger Bontinck ; Jacopo Corno ; Sebastian Schöps ; Herbert De Gersem (2018):
Harmonic Stator-rotor Coupling for The Simulation of Electrical Machines Using Isogeometric Analysis.
In: Workshop on Advances in Electromagnetic Research – KWT 2018, Rietzlern, Austria. URL: http://maxwell-in-motion.org. [Poster]

Iryna Kulchytska-Ruchka ; Melina Merkel ; Sebastian Schöps (2018):
Parallel-In-Time Methods for the Computation of Electromagnetic Fields.
In: Mathematisches Kolloquium der Bergischen Universität Wuppertal, Wuppertal. [Talk]

2017

Sebastian Schöps ; Melina Merkel ; Innocent Niyonzima (2017):
Parallel-In-Time Methods for the Simulation of Electromagnetic Field Problems.
In: URSI-B Workshop Felder und Wellen, Groß-Behnitz, Germany. [Talk]

Melina Merkel ; Innocent Niyonzima ; Sebastian Schöps (2017):
ParaExp using Leapfrog as Integrator for High-Frequency Electromagnetic Simulations.
In: Radio Science, 52, (12), pp. 1558–1569, DOI: 10.1002/2017RS006357, arXiv: 1705.08019. [Article]

Melina Merkel ; Innocent Niyonzima ; Sebastian Schöps (2017):
ParaExp using Leap-Frog as Integrator for High-Frequency Electromagnetic Simulations.
In: SIAM Conference on Computational Science and Engineering (CSE) 2017, Atlanta, Gergia, USA. URL: https://www.siam.org/meetings/cse17/. [Talk]

2016

Melina Merkel ; Innocent Niyonzima ; Sebastian Schöps (2016):
An Application of ParaExp to Electromagnetic Waves.
In: 22nd URSI International Symposium on Electromagnetic Theory (EMTS 2016), Espoo, Finland. URL: http://www.emts2016.org. [Talk]

Melina Merkel ; Innocent Niyonzima ; Sebastian Schöps (2016):
An Application of ParaExp to Electromagnetic Waves.
In: 2016 URSI International Symposium on Electromagnetic Theory (EMTS), 121–124. IEEE. ISBN: 978-1-5090-2503-9, DOI: 10.1109/URSI-EMTS.2016.7571330, arXiv: 1607.00368. [In Proceedings]