Simulation researches in fusion plasmas. Transport simulation of core plasmas

The neoclassical turbulent transport simulation group of numerical experiment reactor research project aims to obtain useful knowledge for predicting the density distribution, temperature distribution, and the confinement time of the torus plasma including helical plasma. For this purpose, for the transport phenomena in the core region, it conducts the development and expansion of transport model and large scale computer simulation code based on drift kinetics and gyrokinetic theory, as well as the code verification by comparing with experiment results. This paper reports the main results obtained between FY2013 and FY2015 on the transport research of core plasmas by the neoclassical turbulent transport simulation group of numerical experiment reactor research project. Regarding the neoclassical transport, the following are reported: (1) construction of a local approximation theoretical model, (2) effects of neoclassical viscosity on plasma rotation, and its comparison with the experiment results, (3) international comparison between each device and each code, and (4) effects of resonant perturbation magnetic field on neoclassical transport phenomena. Regarding the turbulent transport, the following achievements are introduced: (5) progress of understanding and prediction on the turbulent transport of LHD finite beta plasma, (6) analytical results of ion temperature gradient (ITG) - trapped electron mode (TEM) turbulence flow in JT-60U tokamak real equilibrium, (7) application of turbulent transport model based on gyrokinetic analysis to integration code, (8) development of flux - tube connection model for gyrokinetic simulation, (9) development of multi-particle species model for turbulent flow analysis in combustion plasma, (10) promotion of international benchmark, (11) numerical turbulence measurement using turbulence measurement simulator, and (12) gyro fluid ITG turbulence simulation using a new zonal flow closure model. (A.O.)