1 / 7

Integrated Modeling for Burning Plasmas

Integrated Modeling for Burning Plasmas. Discussion Session S. C. Jardin Princeton Plasma Physics Laboratory. Workshop (W60) on “Burning Plasma Physics and Simulation 4-5 July 2005, University Campus, Tarragona, Spain Under the Auspices of the IEA Large Tokamak Implementing Agreement.

marinel
Download Presentation

Integrated Modeling for Burning Plasmas

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Integrated Modeling for Burning Plasmas Discussion Session S. C. Jardin Princeton Plasma Physics Laboratory Workshop (W60) on “Burning Plasma Physics and Simulation 4-5 July 2005, University Campus, Tarragona, Spain Under the Auspices of the IEA Large Tokamak Implementing Agreement

  2. Progress towards a comprehensive theory/model for burning plasmas in ITER/DEMO • Whole Device Modeling Codes • Extended MHD and Energetic Particles • Turbulence Simulations • Edge-Plasma Integrated Modeling • RF, NBI, -particle, Impurities, and Fueling Sources

  3. New initiatives now planned or underway • Japan: BPSI: ( TASK, TOPICS ) • EU: JET initiative (ASTRA, CRONOS, JETTO), Integrated Modeling Task Force DINA/CRONOS coupling • US: NTCC (modules library), PTRANSP (TSC/TRANSP + …), FSP (not yet begun) – (also BALDUR, ONETWO, CORSICA) • Need for more sophisticated modules in most areas • Turbulent Transport models need to be improved/ better quantified, regions of applicability • Extended MHD and energetic particle effects • Scrape-off-layer, ELMs, and pedestal • Need better particle/impurity transport models (from nonlinear gyrokinetic simulations?) • Submit ITER plasmas to ITPA Profile Database • Whole Device Modeling Codes

  4. Need to further develop 3D Nonlinear Extended MHD codes and validate on existing experiments. • Sawtooth: Full 3D nonlinear sawtooth simulation now possible for small tokamaks, not yet for ITER. Good semi-analytical models available (Porcelli model) • ELMs: Some progress (BOUT-Snyder, JOREK-Huysmans, NIMROD-Brennan, M3D-Strauss) Not yet a full 3D ELM simulation for even small tokamaks. Good semi-analytical models being developed. (including ideal-MHD/Enhanced transport model with MARG2D in TOPICS) • NTMs: Not yet a full 3D NTM simulation. Modified Rutherford equation (semi-analytical) models widely used. • Resistive Wall Modes: Not yet a full 3D nonlinear model. • Locked Mode Threshold: Not yet a fundamental model • TAE: 3D Hybrid particle/fluid simulation model possible for short times and weakly nonlinear behavior…full nonlinear integration with thermal particles not yet possible. • Disruption Modeling: Axisymmetric modeling in fairly good shape, 3D modeling just beginning • Extended MHD and energetic Particles

  5. Focus is presently on core turbulence: ITG, ETG, ITG/ETG coupling, finite beta effects, transition from Bohm to gyro-Bohm, turbulence spreading • full 3D GYRO simulation results compared with GLF23 predictions from PTRANSP, sensitivity to grad(Ti) and grad(Er) • need to develop long-time (transport timescale) predictive simulation capability • turbulence and neoclassical simulation integration • mechanisms for transport barrier formation • pedestal region and core-edge simulation integration • how to couple with whole-device-modeling codes • impurities and helium ash transport • may be possible to extend Gyrokinetics codes to include MHD, Wave Heating, and Plasma Edge • Turbulence Simulations

  6. Full 3D predictive edge model is lacking • Numerous edge codes exist to provide qualitative understanding and quantitative results for specific phenomena • edge transport: CSD, SONIC, UEDGE, SOLPS (B2-Eirene),EDGE2D-NIMBUS… • kinetic edge turbulence: PARASOL, DALF … • collisional edge turbulence: BOUT, … • local codes: erosion/depositon ERO, • Coupled Core-EdgeCOCONUT:JETTO-SANCO-EDGE2D-NIMBUS • Coupled core edge: SOLPS beginning (disruptions, ELMs) • semi-analytical/emperical NTCC PEDESTAL module • increasing evidence that ELMs are triggered by current-driven MHD modes • MARG2D ELM model incorporated into TOPICS • Fusion Simulation Projects proposed to study integrated edge-plasma • Many issues remain: • L-H transition and pedestal physics • nonlinear ELM crash, transport, and pedestal recovery • density limit and impurity transport • material erosion including redeposition and dust formation- work in progress to integrate plasma and plate (SOLPS5-B2)—need to characterize mixed materials • Move physics from edge transport codes into edge turbulence codes • Need to include drifts into edge transport codes, and to move to 1D neoclassical • Edge-Plasma Integrated Modeling

  7. Comprehensive suites of RF and neutral beam codes exist • Integrated computations between full-wave ICRF and FP solvers are underway, but not yet in routine use • Integrated modeling that combines advanced ICRF antenna modules with full-wave solvers are underway • RF and NB source modules have been combined with WDM codes, but generally not the most advanced RF packages. • RF/FP Codes need to be coupled to MHD codes in order to simulate instability control • Modeling of Mode Conversion physics in ITER scale plasma not yet possible • Need to incorporate all RF and NB systems together with FP for ions and electrons self-consistently, and with energetic particle MHD • Coupling of SPOT(-particles) and DELPHINE(LH wave propag. and absorp., el. Distrib. Func.) in CRONOS framework • RF, NBI, -particle, and fueling Sources • RF-particles ion distribution function Fisch

More Related