Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Kobel, Philippe"'
Publikováno v:
Physical Review E 96(3) 033114 (2017)
Presented here are observations that demonstrate how the deformation of millimetric cavitation bubbles by a uniform pressure gradient quenches single collapse luminescence. Our innovative measurement system captures a broad luminescence spectrum (wav
Externí odkaz:
http://arxiv.org/abs/1709.04903
Autor:
Supponen, Outi, Obreschkow, Danail, Kobel, Philippe, Tinguely, Marc, Dorsaz, Nicolas, Farhat, Mohamed
Publikováno v:
Phys. Rev. Fluids 2, 093601 (2017)
We present detailed observations of the shock waves emitted at the collapse of single cavitation bubbles using simultaneous time-resolved shadowgraphy and hydrophone pressure measurements. The geometry of the bubbles is systematically varied from sph
Externí odkaz:
http://arxiv.org/abs/1708.04049
Autor:
Supponen, Outi, Obreschkow, Danail, Tinguely, Marc, Kobel, Philippe, Dorsaz, Nicolas, Farhat, Mohamed
Publikováno v:
Journal of Fluid Mechanics 802 (2016): 263-293
Fast liquid jets, called micro-jets, are produced within cavitation bubbles experiencing an aspherical collapse. Here we review micro-jets of different origins, scales and appearances, and propose a unified framework to describe their dynamics by usi
Externí odkaz:
http://arxiv.org/abs/1703.01088
Autor:
Kobel, Philippe
Zugl.: Göttingen, Univ., Diss., 2009
Externí odkaz:
http://d-nb.info/1003097200/04
http://deposit.d-nb.de/cgi-bin/dokserv?id=3486549&prov=M&dok_var=1&dok_ext=htm
http://deposit.d-nb.de/cgi-bin/dokserv?id=3486549&prov=M&dok_var=1&dok_ext=htm
Autor:
Obreschkow, Danail, Tinguely, Marc, Dorsaz, Nicolas, Kobel, Philippe, de Bosset, Aurele, Farhat, Mohamed
Publikováno v:
Experiments in Fluids 54, 1503 (2013)
We describe a recently realized experiment producing the most spherical cavitation bubbles today. The bubbles grow inside a liquid from a point-plasma generated by a nanosecond laser pulse. Unlike in previous studies, the laser is focussed by a parab
Externí odkaz:
http://arxiv.org/abs/1303.4872
Autor:
Tinguely, Marc, Obreschkow, Danail, Kobel, Philippe, Dorsaz, Nicolaz, de Bosset, Aurele, Farhat, Mohamed
Publikováno v:
Phys. Rev. E 86, 046315 (2012)
Spherically collapsing cavitation bubbles produce a shock wave followed by a rebound bubble. Here we present a systematic investigation of the energy partition between the rebound and the shock. Highly spherical cavitation bubbles are produced in mic
Externí odkaz:
http://arxiv.org/abs/1210.4748
Autor:
Obreschkow, Danail, Tinguely, Marc, Dorsaz, Nicolas, Kobel, Philippe, de Bosset, Aurele, Farhat, Mohamed
We show visualizations of the gravity-induced jets formed by spherical bubbles collapsing in liquids subjected to normal gravity, micro-gravity, and hyper-gravity. These observations demonstrate that gravity can have a significant effect on cavitatio
Externí odkaz:
http://arxiv.org/abs/1110.3135
Autor:
Obreschkow, Danail, Tinguely, Marc, Dorsaz, Nicolas, Kobel, Philippe, de Bosset, Aurele, Farhat, Mohamed
Publikováno v:
Phys. Rev. Lett. 107, 204501 (2011)
Cavitation bubbles collapsing and rebounding in a pressure gradient grad(p) form a "micro-jet" enveloped by a "vapor jet". This letter presents unprecedented observations of the vapor jets formed in a uniform gravity-induced grad(p), modulated aboard
Externí odkaz:
http://arxiv.org/abs/1109.6141
Autor:
Obreschkow, Danail, Dorsaz, Nicolas, Kobel, Philippe, de Bosset, Aurele, Tinguely, Marc, Field, John, Farhat, Mohamed
Publikováno v:
Physics of Fluids 23, 101702 (2011)
The unique confinement of shock waves inside isolated liquid volumes amplifies the density of shock-liquid interactions. We investigate this universal principle through an interdisciplinary study of shock-induced cavitation inside liquid volumes, iso
Externí odkaz:
http://arxiv.org/abs/1109.3175
This paper describes the techniques and physical parameters used to produce stable centimetric water drops in microgravity, and to study single cavitation bubbles inside such drops (Parabolic Flight Campaigns, European Space Agency ESA). While the ma
Externí odkaz:
http://arxiv.org/abs/1010.4399