Global transport simulations by the direct coupling with the local gyrokinetic calculations

Honda, Mitsuru; Nakata, Motoki*

Turbulent transport, which governs the profile evolution in a transport code, is calculated by theory-based physical models, but in the course of the model development, some of the physics are discarded. Recent enhancement of the computer resources enables us to perform turbulent transport calculations for a relatively moderate computational time conducted by a first-principle gyrokinetic code. This paper reports the development of the framework consisting of the tokamak transport code TRESS and the local gyrokinetic code GKV and preliminary results using this framework.