Zobrazeno 1 - 10
of 48
pro vyhledávání: '"van Wijngaarden, Leen"'
Bubble curtains are widely used to protect marine life from exposure to noise during offshore construction. However, operating a bubble curtain is costly. Therefore optimizing the acoustic effect of the available air is important. An interesting appr
Externí odkaz:
http://arxiv.org/abs/2410.14415
We report on the melting dynamics of frozen olive oil in quiescent water for Rayleigh numbers up to $10^9$. The density difference results in an upward buoyancy-driven flow of liquid oil forming a thin film around the frozen oil. We experimentally in
Externí odkaz:
http://arxiv.org/abs/2309.00414
Autor:
van Wijngaarden, Leen
A brief survey is given of the dynamical phenomena accompanying the collapse of cavitation bubbles. The discussion includes shock waves, microjets and the various ways in which collapsing bubbles produce damage.
Externí odkaz:
http://arxiv.org/abs/1706.03972
The elastic and adhesive properties of a solid surface can be quantified by indenting it with a rigid sphere. Indentation tests are classically described by the JKR-law when the solid is very stiff, while recent work highlights the importance of surf
Externí odkaz:
http://arxiv.org/abs/1508.03588
Autor:
Prakash, Vivek N., Mercado, Julian Martinez, van Wijngaarden, Leen, Mancilla, Ernesto, Tagawa, Yoshiyuki, Lohse, Detlef, Sun, Chao
Publikováno v:
J. Fluid Mech. (2016), vol. 791, pp. 174-190
We conduct experiments in a turbulent bubbly flow to study the nature of the transition between the classical $-$5/3 energy spectrum scaling for a single-phase turbulent flow and the $-$3 scaling for a swarm of bubbles rising in a quiescent liquid an
Externí odkaz:
http://arxiv.org/abs/1307.6252
We experimentally study the behavior of a particle slightly denser than the surrounding liquid in solid body rotating flow. Earlier work revealed that a heavy particle has an unstable equilibrium point in unbounded rotation flows. In the confinement
Externí odkaz:
http://arxiv.org/abs/1209.0531
Publikováno v:
Physics of Fluids 24, 122101 (2012)
The dynamic response of a gas bubble entrapped in a cavity on the surface of a submerged solid subject to an acoustic field is investigated in the linear approximation. We derive semi-analytical expressions for the resonance frequency, damping and in
Externí odkaz:
http://arxiv.org/abs/1206.6996
Results are reported of an experimental investigation into the motion of a heavy cylinder free to move inside a water-filled drum rotating around a horizontal axis. The cylinder is observed to either co- or, counter intuitively, counter-rotate with r
Externí odkaz:
http://arxiv.org/abs/0911.4535
This paper presents results from a flow visualization study of the wake structures behind solid spheres rising or falling freely in liquids under the action of gravity. These show remarkable differences to the wake structures observed behind spheres
Externí odkaz:
http://arxiv.org/abs/nlin/0412035