Finalizing the ITER divertor design: The key role of SOLPS modeling

Kukushkin, A.S.; Pacher, H.D.; Kotov, V.; Pacher, G.W.; Reiter, D.

doi:10.1016/j.fusengdes.2011.06.009

Cited by 242 publications

(193 citation statements)

References 40 publications

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“…The activities in 2-D modelling of the divertor plasma are widespread in the plasma physics community. A number of codes suitable for this purpose are available, including EDGE2D-Eirene (Taroni et al 1992;Simonini et al 1994), UEDGE (Rognlien et al 1992), SONIC (Shimizu et al 2009) and the SOLPS code family (Reiter et al 1991;Schneider et al 1992;Kukushkin et al 2011;Wiesen et al 2015).…”

Section: Processes Related To Plasma-materials Interactionsmentioning

confidence: 99%

Physics of ultimate detachment of a tokamak divertor plasma

Krasheninnikov¹,

2017

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The basic physics of the processes playing the most important role in divertor plasma detachment is reviewed. The models used in the two-dimensional edge plasma transport codes that are widely used to address different issues of the edge plasma physics and to simulate the experimental data, as well as the numerical schemes and convergence issues, are described. The processes leading to ultimate divertor plasma detachment, the transition to and the stability of the detached regime, as well as the impact of the magnetic configuration and divertor geometry on detachment, are considered. A consistent, integral physical picture of ultimate detachment of a tokamak divertor plasma is developed.

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Section: Processes Related To Plasma-materials Interactionsmentioning

confidence: 99%

Physics of ultimate detachment of a tokamak divertor plasma

Krasheninnikov¹,

2017

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“…The design of ITER plasma facing component relies strongly on transport codes predictions [1][2][3] in term of heat deposition. These transport codes use simplified models to describe the turbulent transport, a first principle direct numerical simulation of turbulent structures [4,5] being prohibitive in term of computational time.…”

Section: Introductionmentioning

confidence: 99%

Interchange Turbulence Model for the Edge Plasma in SOLEDGE2D‐EIRENE

Bufferand

Ciraolo

Ghendrih

et al. 2016

Contrib. Plasma Phys.

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Cross-field transport in edge tokamak plasmas is known to be dominated by turbulent transport. A dedicated effort has been made to simulate this turbulent transport from first principle models but the numerical cost to run these simulations on the ITER scale remains prohibitive. Edge plasma transport study relies mostly nowadays on so-called transport codes where the turbulent transport is taken into account using effective ad-hoc diffusion coeffecients. In this contribution, we propose to introduce a transport equation for the turbulence intensity in SOLEDGE2D-EIRENE to describe the interchange turbulence properties. Going beyond the empirical diffusive model, this system automatically generates profiles for the turbulent transport and hence reduces the number of degrees of freedom for edge plasma transport codes. We draw inspiration from the k-epsilon model widely used in the neutral fluid community.

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“…This is potentially important for advection of plasma density, since experience with transport codes has shown that results are sensitive conservation of particle number in high recycling regimes [1]. In order to study conservation of energy, the procedure described in [17,28] is followed: Multiply the vorticity equation (3) by φ, and Ohm's law (5) by j || .…”

Section: Conservation Propertiesmentioning

confidence: 99%

“…The transport of heat and particles in this region determines the heat loads and erosion rates of plasma facing components (PFCs). Predicting this transport, and exploring means of reducing heat fluxes to PFCs, has played an important role in designing the ITER divertor [1], and will be critical to the design of a future DEMO device [2,3]. One of the uncertainties in making these predictions is the transport across the magnetic field, which is not well described by diffusion [4,5], and is thought to be turbulent [6].…”

Section: Introductionmentioning

confidence: 99%

Hermes: global plasma edge fluid turbulence simulations

Dudson

Leddy

2017

Plasma Phys. Control. Fusion

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Abstract. The transport of heat and particles in the relatively collisional edge regions of magnetically confined plasmas is a scientifically challenging and technologically important problem. Understanding and predicting this transport requires the self-consistent evolution of plasma fluctuations, global profiles and flows, but the numerical tools capable of doing this in realistic (diverted) geometry are only now being developed.Here a 5-field reduced 2-fluid plasma model for the study of instabilities and turbulence in magnetised plasmas is presented, built on the BOUT++ framework. This cold ion model allows the evolution of global profiles, electric fields and flows on transport timescales, with flux-driven cross-field transport determined self-consistently by electromagnetic turbulence. Developments in the model formulation and numerical implementation are described, and simulations are performed in poloidally limited and diverted tokamak configurations.

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Finalizing the ITER divertor design: The key role of SOLPS modeling

Cited by 242 publications

References 40 publications

Physics of ultimate detachment of a tokamak divertor plasma

Physics of ultimate detachment of a tokamak divertor plasma

Interchange Turbulence Model for the Edge Plasma in SOLEDGE2D‐EIRENE

Hermes: global plasma edge fluid turbulence simulations

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