Transport of parallel momentum by collisionless drift wave turbulence
نویسندگان
چکیده
منابع مشابه
Transport of parallel momentum by collisionless drift wave turbulence
This paper presents a novel, unified approach to the theory of turbulent transport of parallel momentum by collisionless drift waves. The physics of resonant and nonresonant off-diagonal contributions to the momentum flux is emphasized, and collisionless momentum exchange between waves and particles is accounted for. Two related momentum conservation theorems are derived. These relate the reson...
متن کاملTransport of parallel momentum by drift-Alfvén turbulence
An electromagnetic gyrokinetic formulation is utilized to calculate the turbulent radial flux of parallel momentum for a strongly magnetized plasma in the large aspect ratio limit. For low-! plasmas, excluding regions of steep density gradients, the level of momentum transport induced by microturbulence is found to be well described within the electrostatic approximation. However, near regions ...
متن کاملRole of phase space structures in collisionless drift wave turbulence and impact on transport modeling
In fusion plasmas, several mechanisms such as heating, wave-particle interaction etc can drive deviations of distribution function from Maxwelian to form phase space structures. This article discusses the impact of phase space structures in drift wave turbulence on dynamics and transport modeling. The two cases of (i) coherent holes and (ii) incoherent granulations (clusters of correlated reson...
متن کاملMassively parallel Vlasov simulation of electromagnetic drift-wave turbulence
We use a hybrid model of drift-kinetic electrons and fluid ions to treat electromagnetic drift-wave turbulence in an inhomogeneous collisionless plasma confined by a strong external magnetic field. The electrons are described in terms of a distribution function in five-dimensional phase space, and the basic nonlinear equations are solved numerically on a massively parallel computer using explic...
متن کاملResistive 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 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: Physics of Plasmas
سال: 2008
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.2826436