Universal Nonlinear Small-Scale DynamoReportar como inadecuado



 Universal Nonlinear Small-Scale Dynamo


Universal Nonlinear Small-Scale Dynamo - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Descargar gratis o leer online en formato PDF el libro: Universal Nonlinear Small-Scale Dynamo
We consider astrophysically relevant nonlinear MHD dynamo at large Reynolds numbers Re. We argue that it is universal in a sense that magnetic energy grows at a rate which is a constant fraction C E of the total turbulent dissipation rate. On the basis of locality bounds we claim that this -efficiency of small-scale dynamo-, C E, is a true constant for large Re and is determined only by strongly nonlinear dynamics at the equipartition scale. We measured C E in numerical simulations and observed a value around 0.05 in highest resolution simulations. We address the issue of C E being small, unlike Kolmogorov constant which is of order unity.



Autor: Andrey Beresnyak

Fuente: https://archive.org/







Documentos relacionados