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Where are we in Integrated modeling? S. Jardin

Explore the current state and future directions of integrated modeling in fusion research, highlighting existing code packages and fundamental physics models. Discover the goals for developing reliable and validated code packages and advancing "first principles" nonlinear models. Learn how collaborative efforts and improved standards can drive progress in fusion research modeling.

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Where are we in Integrated modeling? S. Jardin

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  1. Where are we in Integrated modeling?S. Jardin Mature 1½ D evolution code packages exist with reduced modules for most processes Japan: BPSI: (TASK, TOPICS) EU: Integrated Tokamak Modeling Task Force, JET initiative (ASTRA,CRONOS,JETTO,RITM), DINA/CRONOS coupling US: NTCC-PTRANSP, TSC/TRANSP, BALDUR, ONETWO, CORSICA More fundamental physics models exist in most areas: 5D Gyrokinetics Nonlinear Extended MHD with energetic particle effects Full wave RF codes coupled with Fokker-Plank solvers Edge/PSI codes

  2. Where do we want to go ? Hierarchy of codes with range of speed/physics Reliable validated transport-timescale code packages with improved modules for all processes with reliable ranges of validity Improved fundamental “first principles” nonlinear models that can quantitatively reproduce existing experimental results and future regimes Coupled fundamental models to examine strongly interacting physics issues RF stabilization of MHD turbulence effects on MHD modes core/edge/materials coupling ….. Code Applications Experimental preparation Very fast codes for real time forecasting and control Post-discharge analysis

  3. How do we get there ? Encourage each of the parties to continue their modeling projects Improve documentation and standards Interact with Computer Science and math communities Periodic workshops devoted to comparative modeling and developing international standards Increased emphasis on Verification and Validation at all levels individual physics modules entire “reduced model” code predictions “first principles” codes Standardized discharges for comparative analysis Effort requires continued support and recognition by funding agencies

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