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|dc.description.abstract||In this work, we present a new approach for coupled CFD-optics problems that consists of a combination of a finite element method (FEM) based flow solver with a ray tracing based tool for optic forces that are induced by a laser. We combined the open-source computational fluid dynamics (CFD) package FEATFLOW with the ray tracing software of the LAT-RUB to simulate optical trap configurations. We benchmark and analyze the solver first based on a configuration with a single spherical particle that is subjected to the laser forces of an optical trap. The setup is based on an experiment that is then compared to the results of our combined CFD-optics solver. As an extension of the standard procedure, we present a method with a time-stepping scheme that contains a macro step approach. The results show that this macro time-stepping scheme provides a significant acceleration while still maintaining good accuracy. A second configuration is analyzed that involves non-spherical geometries such as micro rotors. We proceed to compare simulation results of the final angular velocity of the micro rotor with experimental measurements.||en|
|dc.rights||© 2020 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.||-|
|dc.title||Benchmarking and validation of a combined CFD-optics solver for micro-scale problems||en|
|eldorado.secondarypublication.primarycitation||Raphael Münster, Otto Mierka, Stefan Turek, Thomas Weigel, and Andreas Ostendorf, "Benchmarking and validation of a combined CFD-optics solver for micro-scale problems," OSA Continuum 3, 3070-3081 (2020)||de|
|Appears in Collections:||Lehrstuhl III Angewandte Mathematik und Numerik|
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