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In this work, we study the well-posedness of a system of partial differential equations that model the dynamics of a two-dimensional Stokes bubble immersed in two-dimensional ambient Stokes fluid of the same viscosity that extends to…

偏微分方程分析 · 数学 2024-06-13 Jae Ho Choi

This paper presents a comprehensive analysis of two-dimensional water waves characterized by a significant adverse constant vorticity over flows without stagnation points. Surprisingly, we discover qualitative distinctions between this…

偏微分方程分析 · 数学 2024-04-09 Evgeniy Lokharu

Stokes wave is a finite amplitude periodic gravity wave propagating with constant velocity in inviscid fluid. Complex analytical structure of Stokes wave is analyzed using a conformal mapping of a free fluid surface of Stokes wave into the…

斑图形成与孤子 · 物理学 2016-06-30 Pavel M. Lushnikov

We study the stability of Stokes waves on a free surface of an ideal fluid of infinite depth. For small steepness the modulational instability dominates the dynamics, but its growth rate is vastly surpassed for steeper waves by an…

流体动力学 · 物理学 2022-11-11 Bernard Deconinck , Sergey A. Dyachenko , Pavel M. Lushnikov , Anastassiya Semenova

Aims. Qualitative analysis of key (but yet unappreciated) linear phenomena in stratified hydrodynamic Keplerian flows: (i) the occurrence of a vortex mode, as a consequence of strato-rotational balance, with its transient dynamics; (ii) the…

天体物理学 · 物理学 2009-11-13 A. G. Tevzadze , G. D. Chagelishvili , J. -P. Zahn

Euler's equations govern the behavior of gravity waves on the surface of an incompressible, inviscid, and irrotational fluid of arbitrary depth. We investigate the spectral stability of sufficiently small-amplitude, one-dimensional Stokes…

流体动力学 · 物理学 2022-03-14 Ryan Creedon , Bernard Deconinck , Olga Trichtchenko

In this study, a new set of fifth-order Stokes wave solutions, incorporating the effects of a linear shear current, is derived by utilizing the perturbation method originally proposed for pure waves that was recently published. The present…

流体动力学 · 物理学 2023-08-08 Haiqi Fang , Philip L. -F. Liu , Lian Tang , Pengzhi Lin

We consider a full set of harmonics for the Stokes wave in deep water in the absence of viscosity, and examine the role that higher harmonics play in modifying the classical Benjamin-Feir instability. Using a representation of the wave…

流体动力学 · 物理学 2017-04-26 Shahrdad G. Sajjadi , David L. Ross

We address Euler's equations for irrotational gravity waves in an infinitely deep fluid rewritten in conformal variables. Stokes waves are traveling waves with the smooth periodic profile. In agreement with the previous numerical results,…

偏微分方程分析 · 数学 2025-03-21 Sergey Dyachenko , Dmitry E. Pelinovsky

This paper fully answers a long standing open question concerning the stability/instability of pure gravity periodic traveling water waves -- called Stokes waves -- at the critical Whitham-Benjamin depth $ \mathtt{h}_{\scriptscriptstyle WB}…

偏微分方程分析 · 数学 2023-06-26 Massimiliano Berti , Alberto Maspero , Paolo Ventura

Steady linear gravity waves of small amplitude travelling on a current of constant vorticity are found. For negative vorticity we show the appearance of internal waves and vortices, wherein the particle trajectories are not any more closed…

数学物理 · 物理学 2007-12-05 Mats Ehrnstrom , Gabriele Villari

We study two-crested traveling Stokes waves on the surface of an ideal fluid with infinite depth. Following Chen and Saffman (1980), we refer to these waves as class $\mathrm{II}$ Stokes waves. The class $\mathrm{II}$ waves are found from…

斑图形成与孤子 · 物理学 2024-11-26 Anastassiya Semenova

We formulate a quantum theory of vorticity (hydro)dynamics on a general two-dimensional bosonic lattice. In the classical limit of a bosonic condensate, it reduces to conserved plasma-like vortex-antivortex dynamics. The nonlocal…

介观与纳米尺度物理 · 物理学 2019-11-13 Yaroslav Tserkovnyak , Ji Zou

We study the two-phase Stokes flow driven by surface tension for two fluids of different viscosities, separated by an asymptotically flat interface representable as graph of a differentiable function. The flow is assumed to be…

偏微分方程分析 · 数学 2024-04-26 Bogdan-Vasile Matioc , Georg Prokert

We show the existence of periodic traveling waves at the free surface of a two dimensional, infinitely deep, and constant vorticity flow, under gravity, whose profiles are overhanging, including one which intersects itself to enclose a…

偏微分方程分析 · 数学 2022-05-24 Vera Mikyoung Hur , Miles H. Wheeler

A new highly efficient method is developed for computation of traveling periodic waves (Stokes waves) on the free surface of deep water. A convergence of numerical approximation is determined by the complex singularites above the free…

流体动力学 · 物理学 2019-04-02 Pavel M. Lushnikov , Sergey A. Dyachenko , Denis A. Silantyev

This study analyzes steady periodic hydroelastic waves propagating on the water surface of finite depth beneath nonlinear elastic membranes. Unlike previous work \cite{BaldiT,BaldiT1,Toland,Toland1}, our formulation accommodates rotational…

偏微分方程分析 · 数学 2025-08-07 Yong Zhang

We solve the Stokes equations for the flow around two parallel translating and rotating cylinders using tools from complex analysis and conformal mapping. By considering cylinders of arbitrary size and separation, we generalise the…

流体动力学 · 物理学 2025-02-11 Luke Neville

We develop a numerical method based on canonical conformal variables to study two eigenvalue problems for operators fundamental to finding a Stokes wave and its stability in a 2D ideal fluid with a free surface in infinite depth. We…

数值分析 · 数学 2023-07-03 Sergey A. Dyachenko , Anastassiya Semenova

An alternative form of the general solution of the linearized stationary Navier-Stokes equations for an incompressible fluid in spherical coordinates is obtained by the vector potential method. A previously published solution to this…

流体动力学 · 物理学 2024-12-10 Peter Lebedev-Stepanov