Kursus i Plasmafysik, OPL, Risø Juni 6 - 24, 2005 Turbulence, mixing and transport, June 21, 2005  Turbulence, mixing and transport in magnetized plasmas.

Slides:

Advertisements

Similar presentations

Statistical Properties of Broadband Magnetic Turbulence in the Reversed Field Pinch John Sarff D. Craig, L. Frassinetti 1, L. Marrelli 1, P. Martin 1,

Advertisements

P.W. Terry K.W. Smith University of Wisconsin-Madison Outline

Global Simulations of Astrophysical Jets in Poynting Flux Dominated Regime Hui Li S. Colgate, J. Finn, G. Lapenta, S. Li Engine; Injection; Collimation;

Glenn Bateman Lehigh University Physics Department

Chalkidikhi Summer School Plasma turbulence in tokamaks: some basic facts… W.Fundamenski UKAEA/JET.

Conference on Computational Physics 30 August 2006 Transport Simulation for the Scrape-Off Layer and Divertor Plasmas in KSTAR Tokamak S. S. Kim and S.

Statistical properties of edge turbulence in MAST spherical tokamak and LHD stellarator J.M. Dewhurst 1, B. Hnat 1, N. Ohno 2,3, R.O. Dendy 4,1, S.Masuzaki.

Energy Release and Particle Acceleration in Flares Siming Liu University of Glasgow 9 th RHESSI Workshop, Genova, Italy, Sep

Institute of Interfacial Process Engineering and Plasma Technology Gas-puff imaging of blob filaments at ASDEX Upgrade TTF Workshop.

1 Edge Electrode Biasing Experiments on NSTX S. Zweben, C. Bush, R. Maqueda, L. Roquemore, R. Marasla M. Bell, J. Boedo, R. Kaita, Y. Ratises, B. Stratton.

Two-dimensional Structure and Particle Pinch in a Tokamak H-mode

Nanoflares and MHD turbulence in Coronal Loop: a Hybrid Shell Model Giuseppina Nigro, F.Malara, V.Carbone, P.Veltri Dipartimento di Fisica Università della.

Fractional diffusion models of anomalous transport:theory and applications D. del-Castillo-Negrete Oak Ridge National Laboratory USA Anomalous Transport:Experimental.

Paper O4.007, R. A. Pitts et al., 34th EPS Conference: 5 July 2007 Neoclassical and transport driven parallel SOL flows on TCV R. A. Pitts, J. Horacek.

Physics of fusion power

Physics of fusion power Lecture 8 : The tokamak continued.

Non-diffusive transport in pressure driven plasma turbulence D. del-Castillo-Negrete B. A. Carreras V. Lynch Oak Ridge National Laboratory USA 20th IAEA.

R. A. Pitts et al., O-161 of 12PSI17, Heifei Anhui, China, 22-26/05/2006 Parallel SOL flow in TCV R. A. Pitts, J. Horacek, W. Fundamenski 1, A. Nielsen.

1 / 12 Association EURATOM-CEA IAEA 20th Fusion Energy Conference presented by Ph. Ghendrih S. Benkadda, P. Beyer M. Bécoulet, G. Falchetto,

MMFW Madison, Wisconsin 6 May 2011 D.J. Den Hartog, R. M. Magee, S.T.A. Kumar, V.V. Mirnov (University of Wisconsin–Madison) D. Craig (Wheaton College)

A. HerrmannITPA - Toronto /19 Filaments in the SOL and their impact to the first wall EURATOM - IPP Association, Garching, Germany A. Herrmann,

Tuija I. Pulkkinen Finnish Meteorological Institute Helsinki, Finland

N EOCLASSICAL T OROIDAL A NGULAR M OMENTUM T RANSPORT IN A R OTATING I MPURE P LASMA S. Newton & P. Helander This work was funded jointly by EURATOM and.

Nils P. Basse Plasma Science and Fusion Center Massachusetts Institute of Technology Cambridge, MA USA ABB seminar November 7th, 2005 Measurements.

Parallel and Poloidal Sheared Flows close to Instability Threshold in the TJ-II Stellarator M. A. Pedrosa, C. Hidalgo, B. Gonçalves*, E. Ascasibar, T.

S. H. Müller, CRPP, SwitzerlandIAEA TM – Trieste – March 2-4, Basic Turbulence Studies on TORPEX and Challenges in the Theory-Experiment Comparison.

6 th Japan-Korea Workshop on Theory and Simulation of Magnetic Fusion Plasmas Hyunsun Han, G. Park, Sumin Yi, and J.Y. Kim 3D MHD SIMULATIONS.

Joaquim Loizu P. Ricci, F. Halpern, S. Jolliet, A. Mosetto

Edge Localized Modes propagation and fluctuations in the JET SOL region presented by Bruno Gonçalves EURATOM/IST, Portugal.

Introduction to the Particle In Cell Scheme for Gyrokinetic Plasma Simulation in Tokamak a Korea National Fusion Research Institute b Courant Institute,

Challenging problems in kinetic simulation of turbulence and transport in tokamaks Yang Chen Center for Integrated Plasma Studies University of Colorado.

Excitation of ion temperature gradient and trapped electron modes in HL-2A tokamak The 3 th Annual Workshop on Fusion Simulation and Theory, Hefei, March.

HAGIS Code Lynton Appel … on behalf of Simon Pinches and the HAGIS users CCFE is the fusion research arm of the United Kingdom Atomic Energy Authority.

Statistical Fluctuations of Two-dimensional Turbulence Mike Rivera and Yonggun Jun Department of Physics & Astronomy University of Pittsburgh.

Discussions and Summary for Session 1 ‘Transport and Confinement in Burning Plasmas’ Yukitoshi MIURA JAERI Naka IEA Large Tokamak Workshop (W60) Burning.

Research activity on the T-10 tokamak G. Kirnev on behalf of T-10 team Nuclear Fusion Institute, RRC “Kurchatov Institute”, Moscow , Russia.

Computational Plasma Physics: Examples from Turbulence Research W Dorland University of Maryland With images from: W M NevinsD Applegate G W HammettG D.

Dynamics of ITG driven turbulence in the presence of a large spatial scale vortex flow Zheng-Xiong Wang, 1 J. Q. Li, 1 J. Q. Dong, 2 and Y. Kishimoto 1.

Transport of deuterium - tritium neutrals in ITER divertor M. Z. Tokar and V.Kotov Plasma and neutral gas in ITER divertor will be mixed of deuterium and.

14 Oct. 2009, S. Masuzaki 1/18 Edge Heat Transport in the Helical Divertor Configuration in LHD S. Masuzaki, M. Kobayashi, T. Murase, T. Morisaki, N. Ohyabu,

N. Fedorczak O-26 PSI 2010 San Diego 1 Nicolas Fedorczak Poloidal mapping of turbulent transport in SOL plasmas. G. Bonhomme,

D. Tskhakaya et al. 1 (13) PSI 18, Toledo July 2008 Kinetic simulations of the parallel transport in the JET Scrape-off Layer D. Tskhakaya, R.

J. Horacek: Interchange turbulence simulation describes experiment 1 Understanding SOL plasma turbulence by interchange motions J. Horacek 1, O.E. Garcia.

EURATOM – MEdC Association Days Magurele, November, 2009 Trapping, transport & turbulence evolution Madalina Vlad Plasma Theory Group National Institute.

1/1318 th PSI conference – Toledo, May 2008P. Tamain Association EURATOM-CEA 3D modelling of edge parallel flow asymmetries P. Tamain ab, Ph. Ghendrih.

A. Vaivads, M. André, S. Buchert, N. Cornilleau-Wehrlin, A. Eriksson, A. Fazakerley, Y. Khotyaintsev, B. Lavraud, C. Mouikis, T. Phan, B. N. Rogers, J.-E.

RFX-mod Program Workshop, Padova, January Current filaments in turbulent magnetized plasmas E. Martines.

Microscopic Eddys don’t imply gyroBohm Scaling Scan device size while keeping all other dimensionless parameters fixed Turbulence eddy size remains small.

Institut für Plasmaforschung Universität Stuttgart Plasma Turbulence at the Transition from Closed to Open Fieldlines Mirko Ramisch

Parallel Correlation of SOL Turbulence S.J. Zweben, F. Scotti, J.W. Ahn, T. Gray, M. Jaworski, S. Kubota, R. Maqueda, N. Mandell, D. Smith, V. Soukhanovskii.

Confinement & Transport Plan Classical theory of confinement and transport. o Diffusion equation Particle diffusion in a magnetic field.

Integrated Simulation of ELM Energy Loss Determined by Pedestal MHD and SOL Transport N. Hayashi, T. Takizuka, T. Ozeki, N. Aiba, N. Oyama JAEA Naka TH/4-2.

Summary on transport IAEA Technical Meeting, Trieste Italy Presented by A.G. Peeters.

Fyzika tokamaků1: Úvod, opakování1 Tokamak Physics Jan Mlynář 6. Neoclassical particle and heat transport Random walk model, diffusion coefficient, particle.

Association Euratom-CEA TORE SUPRA EAST, China 07/01/2010Xiaolan Zou1 Xiaolan ZOU CEA, IRFM, F Saint-Paul-Lez-Durance, France Heat and Particle Transport.

Role of thermal instabilities and anomalous transport in the density limit M.Z.Tokar, F.A.Kelly, Y.Liang, X.Loozen Institut für Plasmaphysik, Forschungszentrum.

Y. Kishimoto 1,2), K. Miki 1), N. Miyato 2), J.Q.Li 1), J. Anderson 1) 21 st IAEA Fusion Energy Conference IAEA-CN-149-PD2 (Post deadline paper) October.

Turbulent Convection and Anomalous Cross-Field Transport in Mirror Plasmas V.P. Pastukhov and N.V. Chudin.

Simulation of Turbulence in FTU M. Romanelli, M De Benedetti, A Thyagaraja* *UKAEA, Culham Sciance Centre, UK Associazione.

IAEA-TM 02/03/2005 1G. Falchetto DRFC, CEA-Cadarache Association EURATOM-CEA NON-LINEAR FLUID SIMULATIONS of THE EFFECT of ROTATION on ION HEAT TURBULENT.

The barotropic vorticity equation (with free surface)

N. Bonanomi | Summer schools I anno Ph.D. XXX ciclo | 30/11/2015 / 33 0 Transport in Plasma Edge and Scrape Off Layer Nicola Bonanomi.

1 به نام خدا. 2 Turbulence Turbulence is is beautiful beautiful beautiful beautiful.

An overview of turbulent transport in tokamaks

Carlos Hidalgo Laboratorio Nacional de Fusión CIEMAT Madrid, Spain

Simulations of Lateral Transport and Dropout Structure of Energetic Particles from Impulsive Solar Flares Paisan Tooprakai1, Achara Seripienlert2, David.

Generation of Toroidal Rotation by Gas Puffing

Jakobus le Roux (1,2) & Gary Webb (1)

Mikhail Z. Tokar and Mikhail Koltunov

XGC simulation of CMOD edge plasmas

Presentation transcript:

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005  Turbulence, mixing and transport in magnetized plasmas Ultimate goal: Predictive model Odd-Erik Garcia, Volker Naulin, Anders H. Nielsen, Jens Juul Rasmussen Turbulence is found to dominate the transport of plasma across the confining magnetic field. In the edge region turbulent transport is order of magnitude stronger than classical – collision dominated – transport. All lost plasma must go through the edge region! Numerical and theoretical studies of turbulence and transport! Purpose: Understanding turbulence and the associated anomalous transport in magnetized plasmas

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Content:  A general description of turbulence  Turbulence in fluids  Turbulence and mixing/transport  Turbulence in plasmas, quasi 2-dimensional  Vortex structures  Vortex structures and transport  Plasma edge turbulence: modelling comparison with experiments  Transport of impurities.

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Turbulence? Every day phenomena: nature --- administration Leonardo da Vinci : 1452 –1519van Gogh Turbolenza

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Turbulence? Irregularity and randomness Fluctuations on all scales E(k) ~ k -5/3 ”Unpredictability” Diffusivity, rapid mixing Energy cascade, input at large scales – dissipation at small scales Nonlinearity dominates A.N. Kolmogorov

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Turbulence: effective mixer Turbulence Laminar

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Turbulence in a magnetized plasma ITER

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Plasma turbulence The turbulence degrades the confinement: Turbulent transport is the main cause for loosing plasma across the magnetic field lines Numerical Tokamak, Dorland et al. Our turbulence studies are concentrated on edge turbulence Lost plasma has to go through the edge!

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Plasma Turbulence is ”2-Dim” Inverse cascade: energy concentrate at large scales. Vortical structures dominate the dynamics Vortex

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Self-organisation Coherent structures

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Dipole vortices Vortices of opposite vorticity do not cancel Red : positive vorticity Blue : negative vorticity

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Vortex merger Like signed vortices merge

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Vortices trap particles Dipole vortices Red : positive vorticity Blue : negative vorticity Passive tracer field Vortices : transport barriers

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, Dimentional vortices

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Vortex ring Vortex ring bubble Silver ring

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Particle dispersion Potential Density Drift-wave turbulence

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Turbulent flux: Particle flux: Γ = n v = n v ExB Flux PDF The probability distribution function for the plasma flux across the magnetic field is strongly non-Gaussian, i.e., strong bursts are dominating!

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Modelling turbulence at the edge Two-dimensional dynamics: outboard midplane

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Modelling turbulence at the edge Global model 2D: self consistent evolution of pressure profile The source region is separated from the loss region, SOL

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Particle flux at the edge Strong possitive flux events! Pdf of edge particle flux

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Edge turbulence transport in JET Large intermittent burst B. Gonçalves: 11 th European Fusion Physics Workshop, Heraklion, Crete 8-11 Dec Pdf of flux

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Edge transport events Bursts of density and heat are released and propagate far out in the SOL Strong lasting effect on plasma facing components

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Blobs in Experiment Alcator C-Mod ( O. Grulke et al 2004) H-alpha light: proportional to density. CCD: Looking along B-field

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Blobs aligned with B-field Mast, Culham UK (Kirk et al 2005) H-alpha light,

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Impurity transport. 3-Dim simulations, full geometry, flux-tube coordinated Global variations self-consistent profiles Turbulent transport statistics; transport barriers Impurities are also transported by the turbulence. Modelled by passive tracer transport: e.g., trace tritium experiments Poloidal projection of 3-D turbulent field

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Dynamics of impurity density Projected from a 3D fluxtube simulation onto a poloidal cut Timespan: 120 μs Poloidal Asymmetry in transport, pinch

Kursus i Plasmafysik, OPL, Risø Juni , 2005 Turbulence, mixing and transport, June 21, 2005 Film blobs: Summary:  We are approaching models with results that can be compared directly with experiments!  In hot plasmas: Dynamics of fast ions, alphas etc. Confinement!   Spændende Eksamensprojekter og PhD Projekter.  Med ITER mange nye udfordringer.