托卡马克数字孪生的可视化技术.pptx

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1、,Visualization Techniques for the Tokamak Digital Twin,Eliot Feibush,Tokamak Digital Twin,Application of gyrokinetic visualization in context of comprehensive system simulation.William Tang,IAEA Fusion Energy Conference 2023.Visualization John Stone,Tom Gibbs Nvidia Eliot Feibush,Jason Yan,Alex Yao,

2、Apollo LeePlasma Physics Weixing Wang,Stephane Ethier,Noah Borthwick Ge Dong,Xishuo Wei,Zhihong Lin,DIII-D Tokamak General Atomics,2,3,4,VisualizationRoad Map,Tokamak Digital TwinIntegration of engineering CAD,experimentally-validated theory,computation,and advanced visualization.ML enables fast,rea

3、listic prediction of dynamic plasma instability properties.Workflow Architecture,Components,Proof-of-ConceptCAD model of General Atomics DIII-D tokamak.Pre-processed to visualization format.Signal data acquired from 5,000 experimental shots on DIII-D.Calculate current profile,plasma shape,&magnetic

4、field as input to GTS.Output used to train ML model-SGTC(surrogate),rapid prediction of linear stability&2D mode structure.SGTC can run simultaneously with shot to predict kink mode.Provide feedback to plasma control system.VisualizationOmniverse platform for interactive display of large 3-D models&

5、simulations.Displays entire mesh without data reduction.Highly realistic rendering on NVIDIA RTX GPU.,5,GTS-Gyrokinetic Tokamak Simulation,Weixing Wang-Physics of Plasmas,13,2006.Active development.Time dependent datasets of plasma microturbulence.Short time scale.Intrinsic rotation-clockwise&counte

6、r-clockwise Collisionless Trapped Electron Mode CTEM.Generalized geometry,non-circular cross section.,20B particles.400M grid points around torus.50,000 time steps computed.1,000 time steps written to files.TB size.100,000 cores,48 hours at NERSC.1,000 cores,24 hours on stellar.princeton.edu,Large C