Computations of bubble formation and pulsations generated by impacting cylindrical water jets

Szymczak, William G.; Means, Steven L.; Rogers, Joel C. W.

doi:10.1023/b:engi.0000018169.93608.42

Cited by 6 publications

(4 citation statements)

References 23 publications

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“…Another example is the impact of a continuous water mass, thus a liquid column or a jet, onto a pool (Kolaini et al 1993;Oguz, Prosperetti & Kolaini 1995;Clanet & Lasheras 1997;Storr & Behnia 1999;Kersten, Ohl & Prosperetti 2003;Szymczak, Means & Rogers 2004;Qu et al 2011). These studies focused on the bubbles resulting from the hydrostatic collapse of the generated cavity.…”

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confidence: 99%

Impact of a high-speed train of microdrops on a liquid pool

et al. 2016

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A train of high-speed microdrops impacting on a liquid pool can create a very deep and narrow cavity, reaching depths more than 1000 times the size of the individual drops. The impact of such a droplet train is studied numerically using boundary integral simulations. In these simulations, we solve the potential flow in the pool and in the impacting drops, taking into account the influence of liquid inertia, gravity and surface tension. We show that for microdrops the cavity shape and maximum depth primarily depend on the balance of inertia and surface tension and discuss how these are influenced by the spacing between the drops in the train. Finally, we derive simple scaling laws for the cavity depth and width.

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confidence: 99%

Impact of a high-speed train of microdrops on a liquid pool

et al. 2016

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“…Detailed photographic images can be found in Kolaini et al 12 and ͑Szymczak et al͒. 31 The de- tached bubble plume undergoes volume pulsations, constituting a strong acoustic source radiating low-frequency sound.…”

Section: A Near-field Resultsmentioning

confidence: 99%

“…As a first step of the noise prediction strategy outlined in the preceding section, the hydrodynamic simulation of the bubble entrainment by the impact of two cylindrical water jets and the subsequent bubble oscillations has been carried out by Szymczak et al 31 using the generalized hydrodynamic model. In the calculation, axial symmetry is assumed so that the code BUB2D could be used.…”

Section: A Near-field Resultsmentioning

confidence: 99%

“…In this paper, a computational model based on a generalized hydrodynamics theory designed to treat violent liquid collisions is used. This method has been successfully used to calculate the collision of two liquid cylinders, 31 shallow water plume formation, 32 and explosive cratering in water-covered sand. 33 The generalized hydrodynamic model is based on a system of conservation laws subject to a one-sided density constraint.…”

Section: A Hydrodynamic Simulationmentioning

confidence: 99%

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Coupled hydrodynamic-acoustic modeling of sound generated by impacting cylindrical water jets

Means

Szymczak

Rogers³

2008

The Journal of the Acoustical Society of America

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A coupled hydrodynamic-acoustic model describing acoustic propagation in a fluid containing multiple bubbles is proposed and applied to simulate noise generated by impacting water jets. The total pressure is decomposed into a "hydrodynamic" part and an "acoustic" part and computed using different schemes. The hydrodynamic pressure field is calculated independently using a generalized hydrodynamic model, and the pressure variations serve as sources in the wave equation for the acoustic pressure. A numerical algorithm developed to calculate wave propagation in an irregular region is used to account for the existence of the cavities. Noise generated by the impact of two cylindrical water jets is predicted. The computed near-field pressure is compared with the experimental data.

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Visualization of coalescence behavior of two bubbles with smoothness constraint

Zhang

2020

J Vis

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Computations of bubble formation and pulsations generated by impacting cylindrical water jets

Cited by 6 publications

References 23 publications

Impact of a high-speed train of microdrops on a liquid pool

Impact of a high-speed train of microdrops on a liquid pool

Coupled hydrodynamic-acoustic modeling of sound generated by impacting cylindrical water jets

Visualization of coalescence behavior of two bubbles with smoothness constraint

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