transport code ( thoughts, actions for use of, linkage to pdb)
Post on 14-Jan-2016
36 Views
Preview:
DESCRIPTION
TRANSCRIPT
Transport Code( Thoughts, actions for
use of, linkage to PDB)
M.Yokoyama
On Use of PDB (by transport codes)
•Compatibility (readability) of 2D Ufiles checked by TASK3D(Sato), IPP (Turkin) and ASTRA (Estrada) (Apr. 09)
• NC database for transport module (specific-physics in helical systems: particularly important for transport analysis) Extension of DCOM/NNW : vacuum to finite beta, lower collisionality
(Wakasa, Yokoyama)
• Equilibrium Data equilibrium information corresponding to registered shots Some examples for W7-AS high-beta shots: 54022, 54023 (Geiger)
• triggering comments/demands/usability investigation ! (boost the discussions)• inputs from LHD high-beta talks (this afternoon)
NC database for NC module
•We should equip NC DB to be applicable to (at least) registered shots
•Moreover, DB covering a wide range of parameters are required
•Certainly not enough at one specific radius
•DCOM/NNW has been one of attempts to deliver NC DB to transport codes (A.Wakasa et al., JJAP 46 (2007) 1157.)
•It has been extended to
•Lower collisionality (where Monte-Carlo gets so time-consuming) (M.Yokoyama)
Increased accuracy of NNW (DGN/LHD, ITC18(2008)) to be applicable to low-collisional plasmas (eg., CERC)
•finite beta equilibrium (utilizing the LHD VMEC-DB) (A.Wakasa) <> ~ 1, 2, 3 % of Rax,vac=3.75m, 3.60m NNW wrt <>, covering wide range of values
Extension towards low-collisionality, finite (training data for NNW)
10-5
10-3
10-1
101
103
105
107
10-8 10-6 10-4 10-2 100 102
r375q100b298a8020.rho050
0.00E+001.00E-033.16E-031.00E-023.16E-021.00E-01GSRAKE
D*
*
10-5
10-3
10-1
101
103
105
107
10-8 10-6 10-4 10-2 100 102
r375q100b199a8020.rho050
0.00E+001.00E-033.16E-031.00E-023.16E-021.00E-01GSRAKE
D*
*
10-5
10-3
10-1
101
103
105
107
10-8 10-6 10-4 10-2 100 102
r375q100b100a8020.rho050
0.00E+001.00E-033.16E-031.00E-023.16E-021.00E-01GSRAKE
D*
*
Rax,vac=3.75m, =0.5
b100 (~1%)
b298 (~3%)b199 (~2%)
•D* agrees in this range of •D* agrees in this range of
Extension towards low-collisionality, finite (training data for NNW)
Rax,vac=3.75m, =0.9
b100 (~1%)
b298 (~3%)b199 (~2%)
10-5
10-3
10-1
101
103
105
107
10-8 10-6 10-4 10-2 100 102
r375q100b100a8020.rho090
0.00E+001.00E-03
1.00E-02
1.00E-01GSRAKE
D*
*
10-5
10-3
10-1
101
103
105
107
10-8 10-6 10-4 10-2 100 102
r375q100b199a8020.rho090
0.00E+001.00E-033.16E-031.00E-023.16E-021.00E-01GSRAKE
D*
*
10-5
10-3
10-1
101
103
105
107
10-8 10-6 10-4 10-2 100 102
r375q100b298a8020.rho090
0.00E+001.00E-033.16E-031.00E-023.16E-021.00E-01GSRAKE
D*
*
•D*@Er=0 becomes to differ as is increased (smaller in GSRAKE, limited Bmns)
•However, D* at finite Er agrees well (can be “practically” applicable to experimental analysis)
•D*@Er=0 becomes to differ as is increased (smaller in GSRAKE, limited Bmns)
•However, D* at finite Er agrees well (can be “practically” applicable to experimental analysis)
(Modified) Transport Codes Session (CWGM4, Oct.2008)
TASK/3D (NIFS)
Heating
NC ambEr
Anomalous model
IPP
Heating
NC ambEr
Anomalous model
ASTRA (CIEMAT)
Heating
NC ambEr
Anomalous model
Benchmarking on NC
NC DBIPP (W7-AS,X): DKESNIFS (LHD): DGN/LHDOthers: ???
M.Sato Y.Turkin D.Lopez-Bruna
•Convolution for NC flux estimate•Ambipolar Er determination
PDB•Test bed for physics benchmarking•2D Ufiles
Interface to mutual DB (Sato)
2D Ufiles : accessible
equilibrium•Examples provided•Try them: whether they are enough or not ?
Benchmarking on MHD, GK
ISH-PDB: providing equilibria to codes (users)
Neoclassical transport (ICNTS)DKES, DCOM, MOCA, GSRAKE, NEO(2), VENUS-δf, PENTA,,,Boozer equilibria (.bc, .newboz, etc…)•stored in a common directory•interface fully equipped .bcSPBSC (Boozer)
MHDCAS3D, TERPSICHORE,,,•CAS3D: VMEC•TERPSICHORE: VMEC
Edge physicsEMC3/EIRENE,DEGAS,,,•EIRENE: B on (R,φ,Z): field-line trace, HINT(2)
Energetic particles GNET, DELTA5D,,,•GNET: Boozer (NEWBOZ: NIFS-Kyoto)•DELTA5D: Boozer (XBOZ; Spong) Adapting interface of ICNTS activity Turbulent transport
GKV, GENE, GS2, GOBLIN,,,•GKV: currently picked up from VMEC out (radial derivative required for global flux tube sim., later on)•GS2: VMEC out->TERPSICHORE (Boozer)->VVBAL (geometry in balloon. coor.) -> GS2
Proposal: •Survey of possible users (codes)•requests from users on equilibria•Assurance of accuracy, consensus required•Successful achievement through DB feedback
“defacto standard”
Heating&CDTRAVIS, TRECE,,,•TRAVIS: Boozer•TRECE:
Integrated/Predictive transport codesTASK/3D, IPP, ASTRA,,,•VMEC calu. frequently, or, using equilibrium DB ?
b0=1%
b0=2%b0=3%
Rax=3.60 mr/a = 0.5
Rax=3.60 mr/a = 0.9 b0=1%
b0=2%b0=3%
top related