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11月9日 Structure and dynamics of flux-driven turbulent transport dominated by non-locality
五室第100期研讨会
2018-11-07|点击: | 【 【打印】【关闭】

  题  目:Structure and dynamics of flux-driven turbulent transport dominated by non-locality

  报告人:Prof. Y. Kishimoto (京都大学 先进能源研究所所长)

  时  间:2018年11月9日(星期五)  9:30—11:00

  地  点:601会议室

  摘  要:

  We present an overallpicture of flux-driven ITG turbulent transport which revealsresilience andstiffness in profile and self-similarity in relaxation coupledwith SOC typeintermittent bursts using a gyro-kineticbased numerical experiment of tokamak, GKNET, which is afull-f flux-drivenglobal toroidal code with heat and momentum source and sink. Acapability usinggyro-kinetic electrons now become available in the GKNET, sothat  trapped electron mode (TEM) modecan be treated in global geometry. Recently, theelectromagnetic version basedon the -model has been implemented in linear regime, so thatfinite-effects on the ITG mode and also on the kineticballooningmode (KBM) can be studied. Magnetic configuration withnon-circular poloidalcross section becomes available in the GKNET which can beincorporated withequilibrium code. Recently, effects of magnetic shaping withellipticity andtriangularity on ITG instability have been investigatedincluding the inverseD-shaping. The spatio-temporal linkage of differentnon-diffusive processesleads to a newturbulent state dominatedby long range correlation in time and space. Themagnetic shear is found tobe a key control parameter that regulates the turbulentstructure.

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