[SEMINARI] Rayleigh-Taylor and Richtmyer-Meshkov Instabilities in Relativistic Hydrodynamic Jets

Felicidad Pellicer Bolufer felicidad.pellicer en uv.es
Mar Feb 4 12:32:17 CET 2014


Ja està, ara falta que Jin ens envie una imatge de la seua conferència per poder publicar-ne la novetat. 
 
On Martes 4 Febrero 2014 10:51 CET, Enric Marco <Enric.Marco en uv.es> wrote: 
 
> Title: Rayleigh-Taylor and Richtmyer-Meshkov Instabilities in
> Relativistic Hydrodynamic Jets
> 
> By: Jin Matsumoto
> 
> From: Astrophysical Big Bang Laboratory, RIKEN, Wako, Saitama, Japan
> 
> Where: Seminari del departament d'Astronomia i Astrofisica
> 
> Date: Dijous 06 febrer 2014, 14:45
> 
> Abstract:
> 
> We investigate the stability of relativistic jets using
> three-dimensional hydrodynamic simulations. The propagation of
> relativistic flow that is continuously injected from the boundary of
> computational domain into a uniform ambient medium is solved. An
> intriguing finding in our study is that Rayleigh-Taylor and
> Richtmyer-Meshkov type instabilities grow at the interface between the
> jet and ambient medium as a result of spontaneously induced radial
> oscillating motion. It is powered by in-situ energy conversion between
> the thermal and bulk kinetic energies. From complementary
> two-dimensional simulations of transverse structure of the jet, we
> find the effective inertia ratio of the jet to the surrounding medium
> determines a threshold for the onset of instabilities. The mixing
> between light faster jet and slow heavier external matters due to
> these instabilities causes the deceleration of the jet.
> 
> --
> ---
> 
> /------------------------------------\
> Dr. Enric Marco
> Departament d'Astronomia i Astrofísica
> Facultat de Física
> Universitat de València
> C/  Dr. Moliner, 50
> 46100 Burjassot, Spain
> Phone: (34)-96-354-3069
> Fax:(34)-96-354-3084
> enric.marco en uv.es
> www.uv.es/marco
> \--------------------------------------/
> 
 
 
 
-- 
Felicidad Pellicer
Administració
Dep. Astronomia i Astrofísica
Facultat de Física
Universitat de València
C/ Dr. Moliner, 50
46100 - BURJASSOT (València)
Tel.: 96 354 3083
Fax: 96 354 3084 


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