Non linear waves in two dimensional keplerian flows
作者:
E. Siregar,
J. Léorat,
J.P. Poyet,
A. Pouquet,
期刊:
Geophysical & Astrophysical Fluid Dynamics
(Taylor Available online 1987)
卷期:
Volume 38,
issue 2
页码: 69-104
ISSN:0309-1929
年代: 1987
DOI:10.1080/03091928708210106
出版商: Taylor & Francis Group
关键词: Accretion discs;Keplerian flows;nonlinear waves
数据来源: Taylor
摘要:
Accretion discs in astrophysics are fundamental for converting gravitational binding energy into observed electromagnetic radiation. We study the behavior of waves in a two dimensional supersonic Keplerian flow inside a given gravitational potential. We present the effects of shearing and rotation on short waves, and the numerical study of the dynamical stability of such flows with respect to various perturbations. We show that a large class of dynamical effects, due to pressure and associated to short time scales, may be excited.
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