TSVV3 Annual Workshop 2025

20 Oct 2025, 09:00 → 22 Oct 2025, 12:00 Europe/Berlin

DTU, building 313, room 024 + VC

Patrick Tamain (CEA)

Zoom link: https://dtudk.zoom.us/j/69682391824?pwd=ubTOM8751bHaBWQi0bXxQVDXCFhOhX.1

Meeting ID: 696 8239 1824 - Passcode: 876627

Monday 20 October

09:00 → 10:30 Meeting opening

09:00 Arrival

Technical installation, wifi setup, coffee

09:45 Project status and prospects

Speaker: Patrick Tamain (CEA)

TSVV3_workshop_20102025_intro.pptx

10:30 → 12:00 Session: complex geometries

10:30 Recent updates on HDG and investigation of limiter discharges

via VC

Speaker: Ivan Kudashev (Aix-Marseille University, M2P2)

TSVV-3 2025 meeting presentation.pdf

11:00 Simulation of boundary plasma turbulence in baffled TCV first wall geometry including neutrals

via VC

Speaker: Louis Stenger

stenger-tsvvb-workshop-2025.pdf

11:30 Particle and energy conservation applied to divertor leg length studies in TCV

Speaker: Mr Sergio Garcia Herreros

TSVV workshop - Sergio García Herreros.pptx

12:00 → 13:30 Lunch break

13:30 → 15:00 Session: reduced turbulence models

13:30 Reduced turbulence models: retrieving convective-diffusive formulations and (possible) first extensions for non-sheath limited regimes

via VC

Speaker: Olivier Renders (LPP-ERM-KMS)

WorkShop_2025_10_20_reducedTurbModels_Updated.pptx

14:00 Application of k-epsilon model to mean-field modelling (provisional title)

via VC

Speaker: Wouter Dekeyser (LPP-ERM-KMS)

14:30 Growth rate modelling for the production term of the k-epsilon turbulence model

via VC

Speaker: Mr Yakumo Kunimoto

15:00 → 15:30 Coffeee break

15:30 → 16:30 Session: validation against experimentas and scaling laws

15:30 Confrontation of SOLEDGE3X turbulence simulations with SOL widths scaling laws

via VC

Speaker: Mr Hugo Corvoysier

TSVV_presentation_Hugo_Corvoysier.pdf

16:00 Hierarchy of models applied to TCVX21 reference case

Speaker: Hugo Bufferand (CEA)

SlidesHB_v2_forPdf.pdf

16:30 → 18:00 Session: discussions

16:30 Where are we standing w/r to models?

Drift- vs gyro-fluid, 3-moment vs 4-moment, neo-classical physics, kinetic physics...

17:00 L-H transition

TSVV3 private discussion following TSVV1-TSVV3 joint session

Questions to address: do we believe we the phenomenology observed in GRILLIX and GBS is related to the L-H transition? Are they similar? Why is SOLEDGE3X behaving so differently? Can we sustain a pedestal?...

17:30 Contingency for additional discussions, break-out sessions...

Tuesday 21 October

09:00 → 10:30 Session: neutrals and turbulence (part 1)

09:00 Status and outlook of STYX2.0

might be presented by Patrick Tamain, as Nicolas will be in China

Speaker: Nicolas Rivals (CEA)

TSVV5 STYX2.0 introduction 2025-10-19.pptx

09:30 Status and outlook of KINDNES

Speaker: Davide Mancini (EPFL)

10:00 Non linearities in plasma-neutrals interactions

Speaker: Alexander Thrysoe

10:30 → 11:00 Coffee break

11:00 → 12:00 Session: synthetic diagnostics

11:00 TWINTOK: a digital twin approach for refined comparison between experimental data and plasma simulations

via VC

Speaker: Anna Glasser (CEA)

11:30 Discussion on synthetic diagnostics

Status of DBS, BES diagnostic
Priorities for IMASification

12:00 → 13:30 Lunch break

13:30 → 15:30 Session: 3D equilibria

13:30 Modelling of 3D magnetic perturbations in SOLEDGE3X (provisional title)

via VC

Speaker: Diego Sales de Oliveira

TSVV3_Oct21_SalesDeOliveira.pdf

14:00 Recent progress on stellarator modelling in GRILLIX

Speaker: Andreas Stegmeir

14:30 Turbulence in stellarators with GBS

Speaker: Zeno Tecchiolli

15:00 Simulations of W7-X with a BOUT++ mean field Braginskii model

via VC

Speaker: Tobias Tork

TSVV_3_Tobias_Tork.pdf

15:15 Discussion: strategy for 3D equilibria

15:30 → 16:00 Coffee break

16:00 → 17:30 Session: neutrals and turbulence (part 2)

16:00 Status of neutrals in SOLEDGE3X and application to TCVX23

Speaker: Bridget McGibbon

SOLEDGE3X Neutrals Model TSVV3-2025 - B McGIbbon.pdf

16:30 Density regimes in GBS TCV-Xxx turbulence simulations (provisional title)

Speaker: Davide Mancini (EPFL)

17:00 Discussion on neutrals physics

Models, implementation, priorities for applications…

17:30 → 18:00 Contingency for discussion, break-out sessions...

19:00 → 22:00 Social evening

Table booked at RizRaz in Copenhagen https://www.rizraz.dk/, which is close to Nørrerport station

Wednesday 22 October

09:00 → 10:45 Session: numerical and algorithmic optimization

09:00 Accelerated solvers for neutral particle dynamics

via VC

Speaker: Margherita Guido

09:30 Advanced IMEX Time Integration for the Two-Fluid Model of Tokamak Edge Turbulence

via VC

Speaker: Bassanini Michol

10:00 Status of GPU-ization of SOLEDGE3X

Speaker: Mathieu Peybernes (EPFL)

10:30 Specific aspects of GPU porting of GRILLIX

Speaker: Andreas Stegmeir

10:45 → 11:00 Coffee break

11:00 → 12:00 Discussions in preparation of future milestones

Includes:
- preparation of answer to ACH support call
- preparation of EUROfusion Science Meeting