Single-drop impingement onto a wavy liquid film and description of the asymmetrical cavity dynamics

Hinsberg, Nils Paul van; Charbonneau, Marie

doi:10.1103/physreve.92.013004

Cited by 12 publications

(3 citation statements)

References 28 publications

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“…Это волновое движение практически бесконечно малой амплитуды формирует искажение равновесной поверхности жидкости вида ξ(θ, t). Причем max |ξ(r, t)| ≪ a ≡ √ σ/ρg = L, где a -капиллярная постоянная жидкости [11]. Отношение |ξ(r, t)|/a примем в качестве первого малого параметра задачи ε.…”

Section: постановка задачиunclassified

Кольцевые Волны На Поверхности Жидкости В Кулоновском Поле

Ширяева¹,

Григорьев²

2019

Журнал Технической Физики

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Regularities of realization of instability of ring waves on the surface of conductive liquid in the Coulomb field are investigated. The relation for connection of frequency of ring capillary and gravitational waves on a surface of liquid in non-uniform electrostatic field of a dot charge with physical parameters of a task and with an analog of wave number is brought. By analogy with the field parameter of Tonks-Frenkel the field parameter characterizing stability of a surface of conductive liquid in the non-uniform Coulomb field is determined. It is found that critical conditions of realization of instability of ring waves on the surface of conductive liquid in the Coulomb field are more soften than critical conditions of realization of instability of Tonks-Frenkel.

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Section: постановка задачиunclassified

Кольцевые Волны На Поверхности Жидкости В Кулоновском Поле

Ширяева¹,

Григорьев²

2019

Журнал Технической Физики

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“…The dependences of the shape of the cavity, the inclination of the splash and the direction of the preferential emission of the sprays on the position of the point of primary contact on the contour of the liquid surface deformed by a solitary wave are given in [58]. Calculations of the shape of the wave surface of a liquid by a deformed falling drop were performed in [59].…”

Section: Introductionmentioning

confidence: 99%

Fine Flow Structure at the Miscible Fluids Contact Domain Boundary in the Impact Mode of Free-Falling Drop Coalescence

Chashechkin,

Ilinykh

2023

Fluids

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Registration of the flow pattern and the matter distribution of a free falling liquid drop in a target fluid at rest in the impact mode of coalescence when the kinetic energy (KEn) of the drop exceeds its available surface potential energy (ASPe) was carried out by photo and video recording. We studied the evolution of the fine flow structure at the initial stage of the cavity formation. To carry out color registration, the observation field was illuminated by several matrix LED and fiber-optic sources of constant light. The planning of experiments and interpretation of the results were based on the properties of the complete solutions of the fundamental equations of a fluid mechanics system, including the transfer and conversion of energy processes. Complete solutions of the system of equations describe large-scale flow components that are waves or vortices as well as thin jets (ligaments, filaments, fibers, trickles). In experiments, the jets are accelerated by the converted available surface potential energy (ASPe) when the free surfaces of merging fluids were eliminated. The experiments were performed with the coalescence of water, solutions of alizarin ink, potassium permanganate, and copper sulfate or iron sulfate drops in deep water. In all cases, at the initial contact, the drop begins to lose its continuity and breaks up into a thin veil and jets, the velocity of which exceeds the drop contact velocity. Small droplets, the size of which grows with time, are thrown into the air from spikes at the jet tops. On the surface of the liquid, the fine jets leave colored traces that form linear and reticular structures. Part of the jets penetrating through the bottom and wall of the cavity forms an intermediate covering layer. The jets forming the inside layer are separated by interfaces of the target fluid. The processes of molecular diffusion equalize the density differences and form an intermediate layer with sharp boundaries in the target fluid. All noted structural features of the flow are also visualized when a fresh water drop isothermally spreads in the same tap water. Molecular diffusion processes gradually smooth out the fast-changing boundary of merging fluids, which at the initial stage has a complex and irregular shape. Similar flow patterns were observed in all performed experiments; however, the geometric features of the flow depend on the individual thermodynamic and kinetic parameters of the contacting fluids.

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“…Therefore, after continuously increasing the pump power, a single highenergy square wave pulse will split and form multiple single solitons. When the multiple pulses arrange at equal intervals, harmonic mode-locking can be formed in the laser cavity [34][35][36]. Li et al obtained a high-energy square-wave pulse with a tunable range of 33 ns to 200 ns in 2010 using longcavity mode-locking [37].…”

Section: Introductionmentioning

confidence: 99%

SnSe₂ realizes soliton rain and harmonic soliton molecules in erbium-doped fiber lasers

Luo

Liu

et al. 2021

Nanotechnology

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Two-dimensional layered metal chalcogenides (LMCs) are widely used in battery anode materials, energy conversion, and semiconductor devices, because of their high energy storage characteristics, high thermoelectric characteristics, and large electron mobility. SnSe2 as a kind of LMC has strong nonlinear optical characteristics. However, its research on dissipative system dynamics as a saturable absorber has not been studied. In this work, we obtained SnSe2 nanosheets using lithium ion intercalation and we reported a passively mode-locked fiber laser with SnSe2 as a saturable absorber to achieve the dissipative soliton in a dissipative system. Due to the high third-order nonlinearity of SnSe2, the evolution of square wave pulses from 2 to 16 ns was obtained in a fiber ring cavity. Through adjusting the polarization state, the evolution phenomenon of soliton rain, the soliton rain phenomenon with a spectrum of dual-wavelengths, and a bound state harmonic phenomenon with a frequency of 313 MHz were obtained. Therefore, the strong nonlinear fiber laser based on SnSe2 provides a good platform for study the pulsation, explosion, rainfall and other phenomena.

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Single-drop impingement onto a wavy liquid film and description of the asymmetrical cavity dynamics

Cited by 12 publications

References 28 publications

Кольцевые Волны На Поверхности Жидкости В Кулоновском Поле

Кольцевые Волны На Поверхности Жидкости В Кулоновском Поле

Fine Flow Structure at the Miscible Fluids Contact Domain Boundary in the Impact Mode of Free-Falling Drop Coalescence

SnSe₂ realizes soliton rain and harmonic soliton molecules in erbium-doped fiber lasers

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Single-drop impingement onto a wavy liquid film and description of the asymmetrical cavity dynamics

Cited by 12 publications

References 28 publications

Кольцевые Волны На Поверхности Жидкости В Кулоновском Поле

Кольцевые Волны На Поверхности Жидкости В Кулоновском Поле

Fine Flow Structure at the Miscible Fluids Contact Domain Boundary in the Impact Mode of Free-Falling Drop Coalescence

SnSe2 realizes soliton rain and harmonic soliton molecules in erbium-doped fiber lasers

Contact Info

Product

Resources

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SnSe₂ realizes soliton rain and harmonic soliton molecules in erbium-doped fiber lasers