Результаты исследований: Научные публикации в периодических изданиях › статья по материалам конференции › Рецензирование
High-order numerical method for scattering data of the Korteweg - De Vries equation. / Gudko, A.; Gelash, A.; Mullyadzhanov, R.
в: Journal of Physics: Conference Series, Том 1677, № 1, 012011, 03.12.2020.Результаты исследований: Научные публикации в периодических изданиях › статья по материалам конференции › Рецензирование
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TY - JOUR
T1 - High-order numerical method for scattering data of the Korteweg - De Vries equation
AU - Gudko, A.
AU - Gelash, A.
AU - Mullyadzhanov, R.
N1 - Conference code: 36
PY - 2020/12/3
Y1 - 2020/12/3
N2 - Nonlinear wavefields governed by integrable models such as the Korteweg-De Vries (KdV) equation can be decomposed into the so-called scattering data playing the role of independent elementary harmonics evolving trivially in time. A typical scattering data portrait of a spatially localised wavefield represents nonlinear coherent wave structures (solitons) and incoherent radiation. In this work we present a fourth-order accurate algorithm to compute the scattering data within the KdV model. The method based on the Magnus expansion technique provides accurate information about soliton amplitudes, velocities and intensity of the radiation. Our tests performed using a box-shaped wavefield confirm that all components of the scattering data are computed correctly, while the test based on a single-soliton solution verifies the declared order of a numerical scheme.
AB - Nonlinear wavefields governed by integrable models such as the Korteweg-De Vries (KdV) equation can be decomposed into the so-called scattering data playing the role of independent elementary harmonics evolving trivially in time. A typical scattering data portrait of a spatially localised wavefield represents nonlinear coherent wave structures (solitons) and incoherent radiation. In this work we present a fourth-order accurate algorithm to compute the scattering data within the KdV model. The method based on the Magnus expansion technique provides accurate information about soliton amplitudes, velocities and intensity of the radiation. Our tests performed using a box-shaped wavefield confirm that all components of the scattering data are computed correctly, while the test based on a single-soliton solution verifies the declared order of a numerical scheme.
UR - http://www.scopus.com/inward/record.url?scp=85097336979&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1677/1/012011
DO - 10.1088/1742-6596/1677/1/012011
M3 - Conference article
AN - SCOPUS:85097336979
VL - 1677
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012011
T2 - 36th Siberian Thermophysical Seminar
Y2 - 5 October 2020 through 7 October 2020
ER -
ID: 27069454