Results 21 to 30 of about 235,420 (293)

Pulsars and bubble dynamics [PDF]

open access: yesInternational Astronomical Union Colloquium, 1997
AbstractBased on recent observation of the dominance of the flare generated solar wind streams over the co-rotating streams and a significant lowering in the cosmic ray intensity in the abnormal year of the solar activity period, I have predicted the occurrence of discernible changes in magnetic field strength and the thickness of the shell of the ...
openaire   +1 more source

Interferometric Fiber Optic Probe for Measurements of Cavitation Bubble Expansion Velocity and Bubble Oscillation Time

open access: yesSensors, 2023
Cavitation bubbles are used in medicine as a mechanism to generate shock waves. The study of cavitation bubble dynamics plays a crucial role in understanding and utilizing such phenomena for practical applications and purposes.
Emil Zubalic   +3 more
doaj   +1 more source

A Modified Phase-Transition Model for Multi-Oscillations of Spark-Generated Bubbles

open access: yesInventions, 2023
The main composition within a spark-generated bubble primarily consists of vapor, accompanied by a minor presence of noncondensable gases. The phase transition exerts a substantial influence on bubble dynamics throughout various stages, a facet that has ...
Rui Han, Jiayi Chen, Taikun Guo
doaj   +1 more source

A 3D CFD numerical study of the bubble generation process into a bubble Tjunction generator and its comparison with experimental data: Part I [PDF]

open access: yes, 2016
This work presents a 3D numerical study of the bubble generation process into a bubble generator obtained with the commercial Computational Fluid Dynamics solver ANSYS Fluent v15.0.7, and its comparison with experimental data reproducing the same ...
Arias Calderón, Santiago   +1 more
core   +2 more sources

The dynamics of bubbles

open access: yesActa Physica Sinica, 2008
The fluid is assumed to be inviscid and incompressible and the flow irrotational. The three_dimensional numerical model is established to simulate the interaction of multiple bubbles and the fast Fourier transform on multipoles (FFTM) method is combined with the higher order boundary method (BEM) to study the physics of multiple bubble dynamics.
null Zhang A-Man   +2 more
openaire   +1 more source

Experimental investigation on flow boiling bubble motion under ultrasonic field in vertical minichannel by using bubble tracking algorithm

open access: yesUltrasonics Sonochemistry, 2023
Bubble dynamics is important in flow boiling of minichannel, and ultrasonic field effects bubble behaviors. However, flow boiling bubble movements in minichannels under ultrasonic field have received little research attention and are still poorly ...
Jian Xiao, Jinxin Zhang
doaj   +1 more source

Observations and scaling of travelling bubble cavitation [PDF]

open access: yes, 1995
Recent observations of growing and collapsing bubbles in flows over axisymmetric headforms have revealed the complexity of the ‘micro-fluid-mechanics’ associated with these bubbles (van der Meulen & van Renesse 1989; Briancon-Marjollet et al.
Brennen, C. E.   +2 more
core   +1 more source

Collapse dynamics of smectic-A bubbles [PDF]

open access: yesThe European Physical Journal E, 2006
The collapse dynamics of smectic-A bubbles are analyzed experimentally and theoretically. Each bubble is expanded from a flat film stretched at the end of a hollow cylinder and deflated through a pressure release by means of a capillary tube. Its total collapse time can be varied between 0.1s and 20s by suitably choosing the length and the internal ...
Caillier, François, Oswald, Patrick
openaire   +3 more sources

Comparison of Vortex Cut and Vortex Ring Models for Toroidal Bubble Dynamics in Underwater Explosions

open access: yesFluids, 2023
The jet impact from a collapsing bubble is an important mechanism of structural damage in underwater explosions and cavitation erosion. The Boundary Integral Method (BIM) is widely used to simulate nonspherical bubble dynamic behaviors due to its high ...
Lingxi Han   +4 more
doaj   +1 more source

Investigating Bubble Frequency Changes in Pool Boiling in Pure Solutions and on a Stainless Steel Cylinder [PDF]

open access: yesChemical Process Design, 2022
Bubble dynamics is the most important sub-phenomenon, which basically affects the nucleate pool boiling heat transfer coefficient which includes bubble departure frequency, bubble diameter and nucleation site density.
Samane Hamzekhani   +1 more
doaj   +1 more source

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