Solving large multi-scale problems in CST STUDIO SUITE an aircraft application

Kunze, M.; Řezníček, Zdeněk; Munteanu, I.; Tobola, Pavel; Wolfheimer, Felix

doi:10.1109/iceaa.2011.6046294

Cited by 3 publications

(2 citation statements)

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“…Of the full-wave methods capable of accurately modeling near-field phenomena, FDTD method seems to be the most efficient and naturally fitting to analysis of UWB propagation thanks to its time domain formulation. On the other hand, FDTD still requires quite large computational resources when it comes to structures several wavelengths long such as the wind turbine blade, aircraft or ships [11]- [14].…”

Section: Introductionmentioning

confidence: 99%

“…These findings may prove useful to all readers who at some point would need to analyze UWB propagation either along wind turbine blades or objects of similar shape and material, such as helicopter rotor blades, fiberglass aircraft fuselages, or ship hulls. Contributions on large-scale simulations in the available literature [11]- [14] present purely metallic objects, lack detailed information on the pulses propagated along the body, and do not compare the results against measurements. To our best knowledge, fullwave numerical analysis of radio propagation along a wind turbine blade, or any other elongated object with similar shape and dielectric material, including comparison to measurements has not yet appeared in the available literature.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Modeling of Ultrawideband Propagation Along a Wind Turbine Blade

Fránek

Zhang

Olesen

et al. 2018

IEEE Trans. Antennas Propagat.

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Full-wave numerical analysis of an ultrawideband wireless link in frequency band 3-5 GHz along a 37.3m long wind turbine blade is presented. The method used for the analysis is the well-established finite-difference time-domain (FDTD) method with staggered Yee mesh. Simulated results are compared to data obtained from measurement on a real blade, in two experiments involving antennas transmitting both from outside near the blade tip and from inside the blade. In the first experiment, when the wave is propagated along the entire blade and received near the blade root, the differences between the simulation and the measurement are found in pulse magnitudes within 3 dB and in delay within 1.5 ns. In the second experiment, the emitted waves are studied at only 10m distance, but at higher elevations, and the error reaches 6 dB in magnitude and 1.9 ns in delay. Possible reasons for observed discrepancies between the simulations and the measurements are briefly discussed. Despite the long distances involved and challenges connected to the numerical dispersion and anisotropy, the FDTD method turns out to be a feasible choice for full-wave numerical modeling of problems of this type, albeit with slightly high sensitivity to the underlying model.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%