On advanced fluid modelling of drift wave turbulence

TL;DR

This paper uses the Dupree-Weinstock renormalization to establish a reactive closure for drift wave turbulence in magnetized plasmas, connecting theoretical models with simulation results and external sources.

Contribution

It introduces a new reactive closure for drift wave turbulence based on renormalization, linking it to gyrokinetic simulations and existing closure models.

Findings

Reactive closure exists for drift wave turbulence

Closure level depends on external sources

Results explain recent gyrokinetic simulation data

Abstract

The Dupree-Weinstock renormalization is used to prove that a reactive closure exists for drift wave turbulence in magnetized plasmas. The result is used to explain recent results in gyrokinetic simulations and is also related to the Mattor-Parker closure. The level of closure is found in terms of applied external sources.