Numerical Simulation of the Evolution of a Gas Bubble in a Liquid Near a Wall

Аганин, А. А.; Kosolapova, L. A.; Малахов, В. Г.

doi:10.1134/s2070048218010027

Cited by 16 publications

(1 citation statement)

References 19 publications

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“…Modeling Surface of a Bubble. For the case of small size bubble, its shape can be represented by a sphere [3] or an ellipsoid [1,12]. However, in most cases, the contour of a bubble is not a simple sphere or a circle, and it can be approximated by a Fourier series [10,11] or other functions.…”

Section: Methodsmentioning

confidence: 99%

Visualization of Coalescence of Multiple Small Bubbles with Closed B-Spline Curve

Zhang

2020

International Journal of Computer Games Technology

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The smoothness of surface shape is one of the key issues to simulate coalescence of underwater bubbles. In this paper, B-spline closed curve is used to realize the visual simulation of multibubble coalescence. The main idea of the proposed algorithm is to construct a continuous bubble deformation which is guided by the normal direction of each control point and weighted by the distance from the point to the geometry center of the contour. The advantages of this algorithm include the smoothness of the bubble contour in the processing of deformation and the randomness of dynamic process and coalescence process. Experiment results show that the simulation algorithm works well and can be used in 3D computer games and animations.

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Section: Methodsmentioning

confidence: 99%

Visualization of Coalescence of Multiple Small Bubbles with Closed B-Spline Curve

Zhang

2020

International Journal of Computer Games Technology

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Interior non-uniformity of acoustically excited oscillating gas bubbles

2019

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Bubble dynamics near a locally curved region of a plane rigid wall

2022

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The dynamics of a bubble near a local axisymmetric convexity or concavity, cosine-like in the axial section, on a plane rigid wall is studied in the regime with the formation of a cumulative liquid jet directed to the wall. The study is performed by the boundary element method. Main attention is focused on the bubble collapse characteristics at the moment tc when the jet impacts on the bubble surface part near the wall, namely on the jet tip velocity and radius, the internal bubble pressure, the distance between the bubble and the uneven region of the wall, etc. These characteristics are of interest since they to large extent determine the destructive potential of cavitation. The dependences of these characteristics on the radius of the non-plane region of the wall, the depth of the concave region and the height of the convex region, and the local character of the wall unevenness have been investigated. To estimate the effect of the local character of the wall unevenness, the cases of completely concave and convex walls in the form of blunt conical surfaces are used for comparison. It has been found, in particular, that with changing radius of the convex region of the wall, the bubble shape at the moment tc varies significantly: the shape diversity includes the profiles with a gas microcavity in front of the impacting jet tip, an emerging second oppositely-directed jet, and a quite large area of the jet tip impact at its beginning.

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Numerical Simulation of the Evolution of a Gas Bubble in a Liquid Near a Wall

Cited by 16 publications

References 19 publications

Visualization of Coalescence of Multiple Small Bubbles with Closed B-Spline Curve

Visualization of Coalescence of Multiple Small Bubbles with Closed B-Spline Curve

Interior non-uniformity of acoustically excited oscillating gas bubbles

Bubble dynamics near a locally curved region of a plane rigid wall

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