Natural modes of the two-fluid model of two-phase flow

A Clausse, M López de Bertodano - Physics of Fluids, 2021 - pubs.aip.org
A physically based method to derive well-posed instances of the two-fluid momentum
transport equations from first principles is presented. The basic tools used in this endeavor …

Multiply charged vortex states of polariton condensates

SN Alperin, NG Berloff - Optica, 2021 - opg.optica.org
The existence of quantized vortices is a key feature of Bose–Einstein condensates. In
equilibrium condensates, only quantum vortices of unit topological charge are stable, due to …

Dynamics of poles in two-dimensional hydrodynamics with free surface: new constants of motion

AI Dyachenko, SA Dyachenko… - Journal of Fluid …, 2019 - cambridge.org
We address the problem of the potential motion of an ideal incompressible fluid with a free
surface and infinite depth in a two-dimensional geometry. We admit the presence of gravity …

Non-canonical Hamiltonian structure and Poisson bracket for two-dimensional hydrodynamics with free surface

AI Dyachenko, PM Lushnikov… - Journal of Fluid …, 2019 - cambridge.org
We consider the Euler equations for the potential flow of an ideal incompressible fluid of
infinite depth with a free surface in two-dimensional geometry. Both gravity and surface …

Turbulence excitation in counterstreaming paraxial superfluids of light

JD Rodrigues, JT Mendonça, H Terças - Physical Review A, 2020 - APS
Turbulence in the quantum (superfluid) regime, similarly to its classical counterpart,
continues to attract a great deal of scientific inquiry due to the yet high number of unresolved …

Short branch cut approximation in two-dimensional hydrodynamics with free surface

AI Dyachenko, SA Dyachenko… - … of the Royal …, 2021 - royalsocietypublishing.org
A potential motion of ideal incompressible fluid with a free surface and infinite depth is
considered in two-dimensional geometry. A time-dependent conformal map** of the lower …

Application of transport equations for constructing exact solutions for the problem of motion of a fluid with a free boundary

EA Karabut, EN Zhuravleva… - Journal of Fluid …, 2020 - cambridge.org
A problem of an unsteady plane flow of an ideal incompressible fluid with a free boundary is
considered. It is shown that the solution can be found by using a complex transport equation …

Evolution of the four-vortex structure of the He II thermal counterflow based on the simplified two-fluid model

Z Li, Z Liu, Q Zhang, M Dai, Z Zhang, Y He - Physics of Fluids, 2023 - pubs.aip.org
The thermal counterflow of superfluid helium past a cylinder has been found to generate two
pairs of symmetrical vortexes upstream and downstream of the cylinder in experiments. This …

Global existence and singularity formation for the generalized Constantin–Lax–Majda equation with dissipation: the real line vs. periodic domains

DM Ambrose, PM Lushnikov, M Siegel… - …, 2023 - iopscience.iop.org
Global existence and singularity formation for the generalized Constantin–Lax–Majda equation
with dissipation: the real line Page 1 Nonlinearity PAPER Global existence and singularity …

Kelvin-Helmholtz instability of interface in superfluid

VB Eltsov, A Gordeev, M Krusius - Physical Review B, 2019 - APS
The Kelvin-Helmholtz instability is well known in classical hydrodynamics where it explains
the sudden emergence of interfacial surface waves as a function of the flow velocity parallel …