The Influence of Magnetic Fluctuations on Collisional Drift-Wave Turbulence
A 2-dimensional collisional drift-wave turbulence model, which includes magnetic fluctuations has been studied using numerical simulations. This model has as limits the electrostatic Hasegawa-Wakatani equations and the 2-dimensional magnetohydrodynamic equations. The main parameter of the system, beta determines the strength of the magnetic fluctuations. The properties of the turbulence were analyzed by increasing the value of beta and comparing with the characteristics of the Hasegawa-Wakatani system. The linear analysis shows that differences enter only for beta = 10, and that the adiabatic regime is most sensitive to variation of beta. The saturated state of the turbulence for different cases was studied using many different diagnoses. The principal effect of the magnetic fluctuations, since this coupling must go through the magnetic fluctuations. The computed particle transport decreases strongly for higher values of beta.
Bibliographic Reference: Report: IPP 6/336 EN (1995) 47pp.
Availability: Available from Max-Planck-Institut für Plasmaphysik, 85748 Garching bei München (DE)
Record Number: 199610495 / Last updated on: 1996-05-13
Original language: en
Available languages: en