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Open source ELMER software based FEM modeling of waveguides and resonant cavities for microwave heating and drying devices

Szałatkiewicz J., Szewczyk R., Kalinowski M., Kataja J., Råback P., Ruokolainen J., Kachniarz M.

Archives of Electrical Engineering

2017

Vol. 66, nr 4

745--750

Microwave devices are widely used in the industry and in the specialized laboratory analyses. Development of such devices requires the possibility of modeling of microwave energy distribution in the specific resonant chambers. Until now, such modeling was possible only with the use of commercial software or was limited to specific cases. The paper presents an open-source module for ELMER software for solving timeharmonic Maxwell’s equations, allowing modeling of microwave waveguide lines. Three test cases of different resonant chambers are investigated at 2.45 GHz frequency. Modeling results obtained from the open-source ELMER Vectorial Helmholtz module show that the application of this software can be effective in R&D works, enabling high-tech small and medium enterprises involvement in advanced microwave technology.