The intermittent nature of energy dissipation in two-dimensional electron-magnetohydrodynamic turbulence is investigated by means of high resolution direct numerical simulations. It is found that, when the main contribution to the energy is given by the magnetic field, dissipation is mostly concentrated on one-dimensional filaments. As a consequence, the multifractal spectrum has a simple form which can be approximately described in terms of a bifractal model.
Intermittency of two-dimensional decaying electron magnetohydrodynamic turbulence / G., Boffetta; A., Celani; Crisanti, Andrea; R., Prandi. - In: PHYSICAL REVIEW E. - ISSN 1063-651X. - STAMPA. - 59:(1999), pp. 3724-3726. [10.1103/PhysRevE.59.3724]
Intermittency of two-dimensional decaying electron magnetohydrodynamic turbulence
CRISANTI, Andrea;
1999
Abstract
The intermittent nature of energy dissipation in two-dimensional electron-magnetohydrodynamic turbulence is investigated by means of high resolution direct numerical simulations. It is found that, when the main contribution to the energy is given by the magnetic field, dissipation is mostly concentrated on one-dimensional filaments. As a consequence, the multifractal spectrum has a simple form which can be approximately described in terms of a bifractal model.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
