Models of cylindrical bubble pulsation
نویسندگان
چکیده
منابع مشابه
Instabilities of cylindrical bubble clusters.
Small bubbles in an experimental two-dimensional foam between glass plates regularly undergo a three-dimensional instability as the small bubbles shrink under diffusion or equivalently as the plate separation increases, and end up on one of the plates. The most recent experiments of Cox, Weaire, and Vaz are accompanied by Surface Evolver computer simulations and rough theoretical calculations. ...
متن کاملUpdated pulsation models for anomalous Cepheids
A theoretical investigation of the pulsation behavior of so-named " anomalous " Cepheids is presented. The study is based on nonlinear convective pulsation models with Z=0.0001 and 0.0004, mass in the range 1.3-2.2M⊙ and various luminosity levels. Based on these computations, we derive period, bolometric light curves and the edges of the instability strip, showing that a variation of the metal ...
متن کاملModel of coupled pulsation and translation of a gas bubble and rigid particle.
A model of the interaction of a spherical gas bubble and a rigid spherical particle is derived as a coupled system of second-order differential equations using Lagrangian mechanics. The model accounts for pulsation and translation of the bubble as well as translation of the particle in an infinite, incompressible liquid. The model derived here is accurate to order R(5)d(5), where R is a charact...
متن کاملAttenuation of ocular wall pulsation in eyes containing a gas bubble after vitrectomy.
PURPOSE To evaluate the effect of an intraocular gas bubble on ocular wall pulsation. METHODS Eight patients that underwent vitrectomy with intraocular gas injection for various reasons were studied. Ocular pulsation was evaluated in a semi-quantitative way by means of Goldman applanation tonometry in both eyes before and after the operation. Vitreous cavity gas fill in the operated eye was e...
متن کاملPhysically Realistic Models of Catastrophic Bubble Collapses
When gas micro-bubbles are forced with an acoustic field they typically undergo a slow expansion followed by a violent collapse. During the expansion phase a significant amount of vapor enters the bubble. While much of this vapor is expelled as the bubble collapses, significant excess vapor is trapped in the interior during this violent collapse. As the bubble collapses this vapor is significan...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 2012
ISSN: 0001-4966
DOI: 10.1121/1.4730888