Fluctuation and thermal energy balance for drift-wave turbulence
نویسندگان
چکیده
منابع مشابه
Resistive drift-wave turbulence
Two-dimensional resistive drift-wave turbulence is studied by high-resolution numerical simulations in the Iimit of small viscosity. Density and potential fluctuations are cross-coupled by resistive dissipation, proportional to the adiabaticity parameter, F, which determines the character of the system: adiabatic (ml) or hydrodynamic (Z% 1). Various cases are computed for 0. I ~%<5. Energy spec...
متن کاملWave-number spectrum of drift-wave turbulence.
A simple model for the evolution of turbulence fluctuation spectra, which includes neighboring interactions leading to the usual dual cascade as well as disparate scale interactions corresponding to refraction by large scale structures, is derived. The model recovers the usual Kraichnan-Kolmogorov picture in the case of exclusively local interactions and midrange drive. On the other hand, when ...
متن کاملZonal Flows and Electromagnetic Drift Wave Turbulence
Detailed computations of tokamak edge turbulence in three dimensional, globally consistent flux tube geometry show an inhibition of the standard scenario in which zonal ExB flows generated by the turbulence should lead to transport barrier formation. It is found by comparison to slab geometry and by analysis of the energetics that the zonal flow energy is depleted by toroidal coupling to the pr...
متن کاملBifurcation in electrostatic resistive drift wave turbulence
The Hasegawa-Wakatani equations, coupling plasma density, and electrostatic potential through an approximation to the physics of parallel electron motions, are a simple model that describes resistive drift wave turbulence. Numerical analyses of bifurcation phenomena in the model are presented, that provide new insights into the interactions between turbulence and zonal flows in the tokamak plas...
متن کاملElasticity in drift-wave-zonal-flow turbulence.
We present a theory of turbulent elasticity, a property of drift-wave-zonal-flow (DW-ZF) turbulence, which follows from the time delay in the response of DWs to ZF shears. An emergent dimensionless parameter |〈v〉'|/Δωk is found to be a measure of the degree of Fickian flux-gradient relation breaking, where |〈v〉'| is the ZF shearing rate and Δωk is the turbulence decorrelation rate. For |〈v〉'|/Δ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Plasma Physics and Controlled Fusion
سال: 1991
ISSN: 0741-3335,1361-6587
DOI: 10.1088/0741-3335/33/5/006