Demonstration of the role of turbulence-driven poloidal flow generation in the L-H transition

摘要

This paper presents the evidence for the role of turbulence-driven poloidal flow generation in the LH transition induced by a turbulent heating pulse on the HT-6M tokamak. It is found that the poloidal flow v(theta) plays a key role in developing the electric field E-r and triggering the transition. The acceleration of v(theta) across the transition is clearly correlated with the enhancement of the Reynolds stress gradient. [References: 24]