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Current Status of Turbulent Dynamo Theory. From Large-Scale to Small-Scale Dynamosстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Subramanian Kandaswamy, Brandenburg Axel, Sokoloff Dmitry;
- Журнал: Space Science Reviews
- Том: 169
- Номер: 1-4
- Год издания: 2012
- Издательство: Springer Nature
- Местоположение издательства: Switzerland
- Первая страница: 123
- Последняя страница: 157
- DOI: 10.1007/s11214-012-9909-x
- Аннотация: Several recent advances in turbulent dynamo theory are reviewed. High resolution simulations of small-scale and large-scale dynamo action in periodic domains are compared with each other and contrasted with similar results at low magnetic Prandtl numbers. It is argued that all the different cases show similarities at intermediate length scales. On the other hand, in the presence of helicity of the turbulence, power develops on large scales, which is not present in non-helical small-scale turbulent dynamos. At small length scales, differences occur in connection with the dissipation cutoff scales associated with the respective value of the magnetic Prandtl number. These differences are found to be independent of whether or not there is large-scale dynamo action. However, large-scale dynamos in homogeneous systems are shown to suffer from resistive slow-down even at intermediate length scales. The results from simulations are connected to mean field theory and its applications. Recent work on magnetic helicity fluxes to alleviate large-scale dynamo quenching, shear dynamos, nonlocal effects and magnetic structures from strong density stratification are highlighted. Several insights which arise from analytic considerations of small-scale dynamos are discussed.
- Добавил в систему: Соколов Дмитрий Дмитриевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | bss.pdf | 3,2 МБ | 1 декабря 2012 [sokoloff] |