M. Valentinuzzi

Overview of the JET preparation for deuterium–tritium operation with the ITER like-wall

E. Joffrin, S. Abduallev, M. Abhangi, P. Abreu et autres

Abstract For the past several years, the JET scientific programme (Pamela et al 2007 Fusion Eng. Des. 82 590) has been engaged in a multi-campaign effort, including experiments in D, H and T, leading up to 2020 and the first experiments with …

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Two-phases hybrid model for neutrals

M. Valentinuzzi, Y. Marandet, H. Bufferand, Giuseppe Ciraolo et autres

A new hybrid fluid-kinetic code for the atoms has been developed and implemented in Soledge2D. The new code package is able to simulate the evolution of ions, electrons, molecules and two different populations (or phases) of atoms in realistic 2D geometry. Simulations …

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Application of a two-fluid two-point model to SolEdge2D-EIRENE simulations of TCV H-mode plasma

F. Nespoli, H. Bufferand, M. Valentinuzzi, N. Fedorczak et autres

The edge and scrape-off layer (SOL) plasma of the inter-ELM phase of an H-mode discharge from the TCV tokamak is modeled with the transport code SolEdge2D-EIRENE (Bufferand et al. Nuclear Fusion 55 (2015)). The numerical simulations, in presence and in absence of …

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Fluid description of neutral particles in divertor regimes in WEST

M. Valentinuzzi, Giorgio Giorgiani, Y. Marandet, H. Bufferand et autres

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Fluid description of neutral particles in divertor regimes in WEST

M. Valentinuzzi, Giorgio Giorgiani, Y. Marandet, H. Bufferand et autres

A new neutral fluid code has been developed as a necessary step towards a hybrid fluid/kinetic neutral model, to be used in ITER or DEMO simulations, where part of the divertor will be very collisional for neutrals. The neutral fluid code, which …

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Fluid and kinetic modelling for non‐local heat transport in magnetic fusion devices

Guido Ciraolo, H. Bufferand, Pierfrancesco Di Cintio, Ph. Ghendrih et autres

In order to improve the presently used ad hoc flux limiter treatment of parallel heat flux transport in edge plasma fluid codes, here, we consider a generalized version of the Fourier law implementing a non‐local kernel for the heat flux computation. The …

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Impact of the plasma geometry on divertor power exhaust: experimental evidence from TCV and simulations with SolEdge2D and TOKAM3X

A. Gallo, N. Fedorczak, S. Elmore, R. Maurizio et autres

Abstract A deep understanding of plasma transport at the edge of magnetically confined fusion plasmas is needed for the handling and control of heat loads on the machine first wall. Experimental observations collected on a number of tokamaks over the last three …

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Overview of the JET results in support to ITER

X. Litaudon, S. Abduallev, M. Abhangi, P. Abreu et autres

Documento escrito por un elevado número de autores/as, sólo se referencia el/la que aparece en primer lugar y los/as autores/as pertenecientes a la UC3M.

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Towards a consistent modelling of plasma edge turbulence in mean field transport codes: Focus on sputtering and plasma fluctuations

Y. Marandet, H. Bufferand, N. Nace, M. Valentinuzzi et autres

Transport codes are the main workhorses for global edge studies and modern divertor design. These tools do not resolve turbulent fluctuations responsible for the bulk of cross-field transport in the Scrape-off Layer (SOL), and solve mean field equations instead. Turbulent fluxes are …

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H-mode WEST tungsten divertor operation: deuterium and nitrogen seeded simulations with SOLEDGE2D-EIRENE

Giuseppe Ciraolo, H. Bufferand, J. Bucalossi, Ph. Ghendrih et autres

Simulations of WEST H-mode divertor scenarios have been performed with SOLEDGE2D-EIRENE edge plasma transport code, both for pure deuterium and nitrogen seeded discharge. In the pure deuterium case, a target heat flux of 8 MW/m2 is reached, but misalignment between heat and …

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Implementation of drift velocities and currents in SOLEDGE2D–EIRENE

H. Bufferand, C. Baudoin, J. Bucalossi, Giuseppe Ciraolo et autres

In order to improve cross-field transport description, drifts and currents have been implemented in SOLEDGE2D–EIRENE. The derivation of an equation for the electric potential is recalled. The resolution of current equation is tested in a simple slab case. WEST divertor simulations in …

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Turbulence and atomic physics in magnetically confined plasmas

Y. Marandet, H. Bufferand, Giuseppe Ciraolo, N. Nace et autres

An overview of issues related to the interplay between atomic process and turbulence in the peripheral regions of magnetically confined fusion devices is presented. Both atomic processes and turbulence play key roles for fusion, but have most of the time been treated …

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