Paper on a validation test-suite for CEM solvers
Paper on a validation and verification test-suite for computational electromagnetics solvers accepted for publication in IEEE Transaction on Electromagnetic Compatibility.
This collaborative paper with The University of Granada presents a suite of validation test cases for computational electromagnetics (CEM) simulation tools. The test-cases presented were designed to be representative of typical electromagnetic compatibility (EMC) applications and are therefore of particular utility for validating tools for use in this application area. The components of the test-suite have been developed by members of the AEG over a number of years, particularly as part of the FLAVIIR project funded jointly by BAES and EPSRC and the ERC funded High Intensity Radiated Field Synthetic Environment (HIRF SE) research programme.
Full details of the work can be found in the paper (Flintoft et al., 2017) and on the test-suite web site. Some of the earlier developments are reported in (Flintoft et al., 2013; Tallini et al., 2011; Christopoulos et al., 2010; Dawson et al., 2008).
References
- Flintoft, I.D., Dawson, J.F., Dawson, L., Marvin, A.C., Alvarez, J. and Garcia, S.G., 2017. A modular testsuite for the validation and verification of electromagnetic solvers in electromagnetic compatibility applications. IEEE Transactions on Electromagnetic Compatibility, 59(1), pp.111–118.
Computational solvers are increasingly used to solve complex electromagnetic compatibility (EMC) problems in research, product design, and manufacturing. The reliability of these simulation tools must be demonstrated in order to give confidence in their results. Standards prescribe a range of techniques for the validation, verification, and calibration of computational electromagnetics solvers including external references based on measurement or for cross-validation with other models. We have developed a modular test-suite based on an enclosure to provide the EMC community with a complex external reference for model validation. We show how the test-suite can be used to validate a range of electromagnetic solvers. The emphasis of the test-suite is on the features of interest for EMC applications, such as apertures and coupling to cables. We have fabricated a hardware implementation of many of the test-cases and measured them in an anechoic chamber over the frequency range to 1–6 GHz to provide a measurement reference for validation over this range. The test-suite has already been used extensively in two major aeronautical research programs and is openly available for use and future development by the community.
@article{Flintoft2017, author = {Flintoft, I. D. and Dawson, J. F. and Dawson, L. and Marvin, A. C. and Alvarez, J. and Garcia, S. G.}, title = {A modular testsuite for the validation and verification of electromagnetic solvers in electromagnetic compatibility applications}, journal = {IEEE Transactions on Electromagnetic Compatibility}, year = {2017}, volume = {59}, number = {1}, pages = {111-118}, month = feb, issn = {0018-9375}, note = {Date of acceptance: 31/07/2016. © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.}, doi = {10.1109/TEMC.2016.2599004}, file = {:pdfs/TEMC59-Flintoft-111.pdf:PDF}, keywords = {computational electromagnetics, validation, verification, benchmark problems}, postprint = {https://pure.york.ac.uk/portal/files/50264571/TEMC59_Flintoft_111_postprint.pdf}, publisher = {IEEE} } - Flintoft, I.D., Dawson, J.F., Dawson, L. and Marvin, A.C., 2013. A modular test-case for validation of electromagnetic solvers in electromagnetic compatibility applications. In: Computational Electromagnetics for EMC 2013 (CEMEMC’13). Granada, Spain.
@conference{Flintoft2013b, author = {Flintoft, I. D. and Dawson, J. F. and Dawson, L. and Marvin, A. C.}, title = {A modular test-case for validation of electromagnetic solvers in electromagnetic compatibility applications}, booktitle = {Computational Electromagnetics for EMC 2013 (CEMEMC’13)}, year = {2013}, address = {Granada, Spain}, month = {19-21 March}, file = {:pdfs/CEMEMC2013-Flintoft-1.pdf:PDF}, owner = {idf1}, timestamp = {2016.10.12} } - Tallini, D., Dawson, J.F., Flintoft, I.D., Kunze, M. and Munteanu, I., 2011. Virtual HIRF tests in CST STUDIO SUITE;. A reverberant environment application. In: Proceedings of the 2011 International Conference on Electromagnetics
in Advanced Applications, ICEAA2011. Torino, Italy, pp.849–852.
This paper provides an example of a reverberant environment application. A metallic box in different configurations has been simulated with CST STUDIO SUITE™ and the calculated results have been compared to measurements.
@inproceedings{Tallini2011, isbn = {978-1-61284-976-8}, booktitle = {Proceedings of the 2011 International Conference on Electromagnetics in Advanced Applications, ICEAA2011}, month = {12-16 September}, address = {Torino, Italy}, author = {Tallini, D. and Dawson, J. F. and Flintoft, I. D. and Kunze, M. and Munteanu, I.}, title = {Virtual HIRF tests in CST STUDIO SUITE;. A reverberant environment application}, year = {2011}, pages = {849--852}, doi = {10.1109/ICEAA.2011.6046454}, file = {:pdfs/ICEAA2011-Tallini-849.pdf:PDF}, keywords = {computational electromagnetics;reverberation;CST STUDIO SUITE;metallic box;reverberant environment application;virtual HIRF test;Aperture antennas;Frequency domain analysis;Probes;Receiving antennas;Time domain analysis}, owner = {idf1}, timestamp = {2013.09.17} } - Christopoulos, C., Dawson, J.F., Dawson, L., Flintoft, I.D., Hassan, O., Marvin, A.C., K. Morgan, and, Sewell, P., Smartt, C.J. and Xie, Z.Q., 2010. Characterization and modelling of electromagnetic interactions in aircraft. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, [online] 224(4), pp.449–458.
This article describes the development of modelling techniques and simulation tools for the electromagnetic (EM) analysis of aircraft. It is shown that hybrid solvers and multi-scale techniques can be used effectively to analyse the EM response of aircraft. The importance of supplementing models with appropriate measurement and characterization techniques for parameter extraction and for validation is also demonstrated.
@article{Christopoulos2010, author = {Christopoulos, C. and Dawson, J. F. and Dawson, L. and Flintoft, I. D. and Hassan, O. and Marvin, A. C. and and K. Morgan and Sewell, P. and Smartt, C. J. and Xie, Z. Q.}, title = {Characterization and modelling of electromagnetic interactions in aircraft}, journal = {Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering}, year = {2010}, volume = {224}, number = {4}, pages = {449--458}, month = apr, note = {Special issue on the Flapless Airvehicle Integrated Industrial Research (FLAVIIR) Programme in Aeronautical Engineering}, doi = {10.1243/09544100JAERO567}, eprint = {http://pig.sagepub.com/content/224/4/449.full.pdf+html}, file = {:pdfs/PIMEGJAE224-Christopoulos-449.pdf:PDF}, owner = {idf1}, timestamp = {2013.09.02}, url = {http://pig.sagepub.com/content/224/4/449.abstract} } - Dawson, J.F., Smartt, C.J., Flintoft, I.D. and Christopoulos, C., 2008. Validating a numerical electromagnetic solver in a reverberant environment. In: 4th IEE International Conference on Computation in Electromagnetics (CEM2002). Bournemouth, UK: IEE, pp.42–43.
This paper presents some thoughts on how to compare the results from a numerical electromagnetic solver with measured data in a reverberant environment where a large number of resonant modes are present in the data.
@inproceedings{Dawson2008, booktitle = {4th IEE International Conference on Computation in Electromagnetics (CEM2002)}, month = {9-11 April}, publisher = {IEE}, address = {Bournemouth, UK}, number = {2002/063}, author = {Dawson, J. F. and Smartt, C. J. and Flintoft, I. D. and Christopoulos, C.}, title = {Validating a numerical electromagnetic solver in a reverberant environment}, year = {2008}, pages = {42--43}, doi = {10.1049/cp:20080214}, file = {:pdfs/CEM2008-Dawson-42.pdf:PDF}, keywords = {computational electromagnetics;electromagnetic fields;computational electromagnetics;numerical electromagnetic solver;resonant modes;reverberant environment;computational electromagnetics;q-factor;reverberation;validation}, owner = {idf1}, postprint = {https://pure.york.ac.uk/portal/files/4881944/Dawson2008a_IET_CEM.pdf}, timestamp = {2013.09.13} }