Instability of a Nonuniform Compressible Gas with Self-Gravity | Sciact - CRIS-system of Boreskov Institute of Catalysis

Instability of a Nonuniform Compressible Gas with Self-Gravity Full article

Conference

Plasmas in the Laboratory and in the Universe: Interactions, Patterns and Turbulence : International Symposium
01-04 Dec 2009 , Comо

Source

Plasmas in the Laboratory and the Universe: Interactions, Patterns, and Turbulence
Compilation, 2010. ISBN 978-0-7354-0787-9.

Journal

AIP Conference Proceedings
ISSN: 0094-243X , E-ISSN: 1551-7616

Output data

Year: 2010, Volume: 1242, Pages: 355-362 Pages count : 8 DOI: 10.1063/1.3460149

Funding (3)

1	Президиум РАН	26
2	Президиум РАН
3	Президиум РАН

For the case of nonuniform gas with viscosity and gravity, a dispersion relation was obtained for the perturbations whose wave vector is directed along the density gradient. The gravitational‐convective perturbations were shown to be locally instable in a non‐viscous isothermal gas over the entire spectrum of wave vectors. This leads to instability of the gas stationary distributions. Solving the initial‐boundary value problems of non‐stationary dynamics of isothermal gas requires regularization by, e.g., viscosity. Viscosity does not hinder the growth of the Jeans part of gravitational‐convective instability. Numerical experiments based on a completely three‐dimensional transient code demonstrated the development of collapse in isothermal cloud.

Snytnikov V.N. , Stadnichenko O.A.
Instability of a Nonuniform Compressible Gas with Self-Gravity
In compilation Plasmas in the Laboratory and the Universe: Interactions, Patterns, and Turbulence. 2010. – C.355-362. – ISBN 978-0-7354-0787-9. DOI: 10.1063/1.3460149 WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:000284019000040
Scopus:	2-s2.0-77955824479
Elibrary:	15336875
OpenAlex:	W2014468848

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