Universal turbulence scaling law −8/3 at fusion implosion

Autor:	Sergei G. Chefranov, Artem S. Chefranov
Rok vydání:	2022
Předmět:	Plasma Physics (physics.plasm-ph) Physics::Fluid Dynamics Fluid Flow and Transfer Processes Mechanics of Materials Mechanical Engineering Fluid Dynamics (physics.flu-dyn) Computational Mechanics FOS: Physical sciences Physics - Fluid Dynamics Condensed Matter Physics Physics - Plasma Physics
Zdroj:	Physics of Fluids. 34:036105
ISSN:	1089-7666 1070-6631
DOI:	10.1063/5.0082164
Popis:	The new interpretation of the known results of simulation of the turbulent regime at the time before stagnation stage of the fusion implosion is stated. For this aim the universal turbulence energy spectrum obtained by the authors with a scaling law -8/3, which corresponds to the exact solution of one-dimensional Euler equations for the dynamics of a compressible medium, is used. It is stated that the scaling law -8/3 has more relevance in comparison with the Kolmogorov spectrum of -5/3 in the inertial sub-range of scales for the compressible turbulence at this stage of fusion implosion. A possible mechanism for the occurrence of the anisotropic spectrum -8/3 in turbulence associated with hydrodynamic instability of the rotation of the medium behind the shock wave front is considered. 2 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b26656182ec2dbafcc55f8af0ebf609 https://doi.org/10.1063/5.0082164 Zobrazit plný text záznamu