Weice Wang, Jun Cheng, Zhongbing Shi, Longwen Yan, Zhihui Huang, K. Yi, Na Wu, Yu He, Q. Zou, Xi Chen, Wen Zhang, Jian Chen, Lin Nie, Xiaoquan Ji, Wulyu Zhong
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引用次数: 0
Abstract
This paper reports an improved time-delay displacement estimation (TDE) technique for the derivation of turbulence structures based on gas-puff imaging (GPI) data. The improved TDE technique, integrating an inverse timing search and hierarchical strategy, offers superior accuracy in calculating turbulent velocity field maps and analyzing blob dynamics, which has power to obtain the radial profiles of equilibrium poloidal velocity, blob size and its radial velocity, even the fluctuation analysis, such as geodesic acoustic modes (GAM) and quasi-coherent mode (QCM), etc. This improved technique could provide important 2D information for the study of edge turbulence and the blob dynamics, advancing the understanding of edge turbulence physics in fusion plasmas.
期刊介绍:
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A Publication of the Institute of Plasma Physics, Chinese Academy of Sciences and the Chinese Society of Theoretical and Applied Mechanics.