Print Email Facebook Twitter Analysis of Bore Characteristics Using KdV-Based Nonlinear Fourier Transform Title Analysis of Bore Characteristics Using KdV-Based Nonlinear Fourier Transform Author Brühl, M. (TU Delft Team Sander Wahls) Wahls, S. (TU Delft Team Sander Wahls) Barranco Granged, Ignacio (National University of Singapore) Liu, Philipp L.-F. (National University of Singapore) Date 2020 Abstract Bores propagating in shallow water transform into undular bores and, finally, into trains of solitons. The observed number and height of these undulations, and later discrete solitons, is strongly dependent on the propagation length of the bore. Empirical results show that the final height of the leading soliton in the far-field is twice the initial mean bore height. The complete disintegration of the initial bore into a train of solitons requires very long propagation lengths, but unfortunately these required distances are usually not available in experimental tests or nature. Therefore, the analysis of the bore decomposition for experimental data into solitons is difficult and requires further approaches. Previous studies have shown that by application of the nonlinear Fourier transform based on the Korteweg–de Vries equation (KdV-NFT) to bores and long-period waves propagating in constant depth, the number and height of all solitons can be reliably predicted already based on the initial bore-shaped free surface.Against this background, this study presents the systematic analysis of the leading-soliton amplitudes for non-breaking and breaking bores with different strengths in different water depths in order to validate the KdV-NFT results for non-breaking bores, and to show the limitations of wave breaking on the spectral results. The analytical results are compared with data from experimental tests, numerical simulations and other approaches from literature. Subject borenonlinear Fourier transformsoliton fission To reference this document use: http://resolver.tudelft.nl/uuid:845c4a3a-49de-40b8-a942-a109993d3858 DOI https://doi.org/10.1115/OMAE2020-19074 Publisher ASME ISBN 978-0-7918-8438-6 Source Proceedings of the ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2020, Volume 6B: Ocean Engineering Event ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2020, 2020-08-03 → 2020-08-07, Virtual, Online Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type conference paper Rights © 2020 M. Brühl, S. Wahls, Ignacio Barranco Granged, Philipp L.-F. Liu Files PDF Bruehl_et_al_OMAE2020_190 ... _final.pdf 2.07 MB Close viewer /islandora/object/uuid:845c4a3a-49de-40b8-a942-a109993d3858/datastream/OBJ/view