关键词: 静电探针, 动量输运, 雷诺协强, 相位调制

Abstract:

In HL-2A tokamak, the profile of turbulent Reynolds stress and the cross-phase between and was measured around the last closed flux surface. The result shows that the Reynolds stress is mainly determined by the cross-phase between and although the amplitude of and influence the amplitude of Reynolds stress. Besides, ohmic discharge and ECRH L-mode discharge show that radial particle flux caused by density perturbation has an important effect on the poloidal momentum flux. Its value is comparable to that of Reynolds stress. This indicates that the contribution of particle transport in the analysis of the turbulent momentum transport must be considered.

Key words: Langmuir probe, Momentum transport, Reynolds stress, Cross-phase, Particle flux Langmuir probe, Momentum transport, Reynolds stress, Cross-phase, Particle flux