Time: 2012-12-14 14:00:00
Speaker: Zhenqian Li [IFTS]
Place: Rm. 413, Bld. 11#, Yuquan Campus
Abstract: Title:Bi-coherence spectrum of drift wave-zonal flow system
Abstract:In recent years zonal flow get more and more attention because people believe it can suppress the drift wave turbulence and reduce turbulent transport. How the zonal flow generated by the drift wave mode-mode coupling is not very clear yet. In this seminar, the revolution of the k spectrum on a magnetic surface and the bi-coherence spectrum are presented. The bi-coherence spectrum is used for calculating the mode-mode coupling coefficient. (YC Kim,1979,Plasma Science, IEEE Transactions)