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On the phase dependence of the soliton collisions in the Dyachenko-Zakharov envelope equation. / Kachulin, Dmitry; Gelash, Andrey.
в: Nonlinear Processes in Geophysics, Том 25, № 3, 15.08.2018, стр. 553-563.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - On the phase dependence of the soliton collisions in the Dyachenko-Zakharov envelope equation
AU - Kachulin, Dmitry
AU - Gelash, Andrey
N1 - Publisher Copyright: © Author(s) 2018.
PY - 2018/8/15
Y1 - 2018/8/15
N2 - We study soliton collisions in the Dyachenko-Zakharov equation for the envelope of gravity waves in deep water. The numerical simulations of the soliton interactions revealed several fundamentally different effects when compared to analytical two-soliton solutions of the nonlinear Schrodinger equation. The relative phase of the solitons is shown to be the key parameter determining the dynamics of the interaction. We find that the maximum of the wave field can significantly exceed the sum of the soliton amplitudes. The solitons lose up to a few percent of their energy during the collisions due to radiation of incoherent waves and in addition exchange energy with each other. The level of the energy loss increases with certain synchronization of soliton phases. Each of the solitons can gain or lose the energy after collision, resulting in increase or decrease in the amplitude. The magnitude of the space shifts that solitons acquire after collisions depends on the relative phase and can be either positive or negative.
AB - We study soliton collisions in the Dyachenko-Zakharov equation for the envelope of gravity waves in deep water. The numerical simulations of the soliton interactions revealed several fundamentally different effects when compared to analytical two-soliton solutions of the nonlinear Schrodinger equation. The relative phase of the solitons is shown to be the key parameter determining the dynamics of the interaction. We find that the maximum of the wave field can significantly exceed the sum of the soliton amplitudes. The solitons lose up to a few percent of their energy during the collisions due to radiation of incoherent waves and in addition exchange energy with each other. The level of the energy loss increases with certain synchronization of soliton phases. Each of the solitons can gain or lose the energy after collision, resulting in increase or decrease in the amplitude. The magnitude of the space shifts that solitons acquire after collisions depends on the relative phase and can be either positive or negative.
UR - http://www.scopus.com/inward/record.url?scp=85051743232&partnerID=8YFLogxK
U2 - 10.5194/npg-25-553-2018
DO - 10.5194/npg-25-553-2018
M3 - Article
AN - SCOPUS:85051743232
VL - 25
SP - 553
EP - 563
JO - Nonlinear Processes in Geophysics
JF - Nonlinear Processes in Geophysics
SN - 1023-5809
IS - 3
ER -
ID: 16073185