Search Results - "Grandgirard, V."

Impact of energetic-particle-driven geodesic acoustic modes on turbulence by Zarzoso, D, Sarazin, Y, Garbet, X, Dumont, R, Strugarek, A, Abiteboul, J, Cartier-Michaud, T, Dif-Pradalier, G, Ghendrih, Ph, Grandgirard, V, Latu, G, Passeron, C, Thomine, O

“…The impact on turbulent transport of geodesic acoustic modes excited by energetic particles is evidenced for the first time in flux-driven 5D gyrokinetic…”
Get full text

Mechanism of edge localized mode mitigation by resonant magnetic perturbations by Bécoulet, M, Orain, F, Huijsmans, G T A, Pamela, S, Cahyna, P, Hoelzl, M, Garbet, X, Franck, E, Sonnendrücker, E, Dif-Pradalier, G, Passeron, C, Latu, G, Morales, J, Nardon, E, Fil, A, Nkonga, B, Ratnani, A, Grandgirard, V

“…A possible mechanism of edge localized modes (ELMs) mitigation by resonant magnetic perturbations (RMPs) is proposed based on the results of nonlinear…”
Get full text

Finding the elusive E×B staircase in magnetized plasmas by Dif-Pradalier, G, Hornung, G, Ghendrih, Ph, Sarazin, Y, Clairet, F, Vermare, L, Diamond, P H, Abiteboul, J, Cartier-Michaud, T, Ehrlacher, C, Estève, D, Garbet, X, Grandgirard, V, Gürcan, Ö D, Hennequin, P, Kosuga, Y, Latu, G, Maget, P, Morel, P, Norscini, C, Sabot, R, Storelli, A

“…Turbulence in hot magnetized plasmas is shown to generate permeable localized transport barriers that globally organize into the so-called "ExB staircase" [G…”
Get full text

Synergy of Turbulent Momentum Drive and Magnetic Braking by Varennes, R., Garbet, X., Vermare, L., Sarazin, Y., Dif-Pradalier, G., Grandgirard, V., Ghendrih, P., Donnel, P., Peret, M., Obrejan, K., Bourne, E.

Get full text

The effect of shaping on trapped electron mode stability: an analytical model by Garbet, X., Donnel, P., De Gianni, L., Qu, Z., Melka, Y., Sarazin, Y., Grandgirard, V., Obrejan, K., Bourne, E., Dif-Pradalier, G.

“…Abstract A reduced model for trapped electron mode stability has been developed, which incorporates the basic effects of magnetic surface shaping, in…”
Get full text

Impact of poloidal convective cells on momentum flux in tokamaks by Garbet, X, Asahi, Y, Donnel, P, Ehrlacher, C, Dif-Pradalier, G, Ghendrih, P, Grandgirard, V, Sarazin, Y

“…Radial fluxes of parallel momentum due to E × B and magnetic drifts are shown to be correlated in tokamak plasmas. This correlation comes from the onset of…”
Get full text

Interplay between gyrokinetic turbulence, flows, and collisions: perspectives on transport and poloidal rotation by Dif-Pradalier, G, Grandgirard, V, Sarazin, Y, Garbet, X, Ghendrih, Ph

“…The impact of ion-ion collisions on confinement is investigated with the full-f and global gyrokinetic Gysela code through a series of nonlinear turbulence…”
Get full text

A drift-kinetic Semi-Lagrangian 4D code for ion turbulence simulation by Grandgirard, V., Brunetti, M., Bertrand, P., Besse, N., Garbet, X., Ghendrih, P., Manfredi, G., Sarazin, Y., Sauter, O., Sonnendrücker, E., Vaclavik, J., Villard, L.

“…A new code is presented here, named Gyrokinetic SEmi-LAgragian (GYSELA) code, which solves 4D drift-kinetic equations for ion temperature gradient driven…”
Get full text

TOKAM-3D: A 3D fluid code for transport and turbulence in the edge plasma of Tokamaks by Tamain, P., Ghendrih, Ph, Tsitrone, E., Grandgirard, V., Garbet, X., Sarazin, Y., Serre, E., Ciraolo, G., Chiavassa, G.

“…We present a new code aiming at giving a global and coherent approach for transport and turbulence issues in the edge plasma of Tokamaks. The TOKAM-3D code…”
Get full text

Unraveling quasiperiodic relaxations of transport barriers with gyrokinetic simulations of tokamak plasmas by Strugarek, A, Sarazin, Y, Zarzoso, D, Abiteboul, J, Brun, A S, Cartier-Michaud, T, Dif-Pradalier, G, Garbet, X, Ghendrih, Ph, Grandgirard, V, Latu, G, Passeron, C, Thomine, O

“…The generation and dynamics of transport barriers governed by sheared poloidal flows are analyzed in flux-driven 5D gyrokinetic simulations of ion temperature…”
Get full text

Turbulence in the TORE SUPRA tokamak: measurements and validation of nonlinear simulations by Casati, A, Gerbaud, T, Hennequin, P, Bourdelle, C, Candy, J, Clairet, F, Garbet, X, Grandgirard, V, Gürcan, O D, Heuraux, S, Hoang, G T, Honoré, C, Imbeaux, F, Sabot, R, Sarazin, Y, Vermare, L, Waltz, R E

“…Turbulence measurements in TORE SUPRA tokamak plasmas have been quantitatively compared to predictions by nonlinear gyrokinetic simulations. For the first…”
Get full text

Role of plasma elongation on turbulent transport in magnetically confined plasmas by Angelino, P, Garbet, X, Villard, L, Bottino, A, Jolliet, S, Ghendrih, Ph, Grandgirard, V, McMillan, B F, Sarazin, Y, Dif-Pradalier, G, Tran, T M

“…The theoretical study of plasma turbulence is of central importance to fusion research. Experimental evidence indicates that the confinement time results…”
Get full text

On the validity of the local diffusive paradigm in turbulent plasma transport by Dif-Pradalier, G, Diamond, P H, Grandgirard, V, Sarazin, Y, Abiteboul, J, Garbet, X, Ghendrih, Ph, Strugarek, A, Ku, S, Chang, C S

“…A systematic, constructive and self-consistent procedure to quantify nonlocal, nondiffusive action at a distance in plasma turbulence is exposed and applied to…”
Get full text

Intermittency in flux driven kinetic simulations of trapped ion turbulence by Darmet, G., Ghendrih, Ph, Sarazin, Y., Garbet, X., Grandgirard, V.

“…Flux driven kinetic transport is analysed for deeply trapped ion turbulence with the code GYSELA. The main observation is the existence of a steady state…”
Get full text

3D modelling of edge parallel flow asymmetries by Tamain, P., Ghendrih, Ph, Tsitrone, E., Sarazin, Y., Garbet, X., Grandgirard, V., Gunn, J., Serre, E., Ciraolo, G., Chiavassa, G.

“…The issue of parallel flows asymmetries in the edge plasma is tackled with a new first principle transport and turbulence code. TOKAM-3D is a 3D full-torus…”
Get full text

Electron burst driven by near electric field effects of lower‐hybrid launchers by Valade, L., Ekedahl, A., Ghendrih, P., Sarazin, Y., Asahi, Y., Bufferand, H., Caschera, E., Di Cintio, P., Ciraolo, G., Dif‐Pradalier, G., Donnel, P., Garbet, X., Giorgi, P.‐A., Grandgirard, V., Latu, G., Lepri, S., Livi, R., Nouri, A., Serre, E.

“…Hotspot generation by lower‐hybrid (LH) launchers is found to be governed by a resonance in the plasma electric field response to the external drive. The…”
Get full text

Existence of metastable kinetic modes by Nguyen, C, Lütjens, H, Garbet, X, Grandgirard, V, Lesur, M

“…The nonlinear evolution of resonantly driven systems, such as suprathermal particle driven modes in magnetically confined plasmas, is shown to strongly depend…”
Get full text

Computing ITG turbulence with a full- f semi-Lagrangian code by Grandgirard, V., Sarazin, Y., Garbet, X., Dif-Pradalier, G., Ghendrih, Ph, Crouseilles, N., Latu, G., Sonnendrücker, E., Besse, N., Bertrand, P.

“…This paper addresses non-linear global gyrokinetic simulations of ion temperature gradient (ITG) driven turbulence with the G ysela code. The particularity of…”
Get full text

Shearing effects on density burst propagation in SOL plasmas by Ghendrih, Ph, Ciraolo, G., Larmande, Y., Sarazin, Y., Tamain, P., Beyer, P., Chiavassa, G., Darmet, G., Garbet, X., Grandgirard, V.

“…SOL turbulence is characterised by intermittent ballistic transport of density fronts. The interaction of such density structures with velocity shear layers is…”
Get full text

Theoretical understanding of turbulent transport in the SOL by Sarazin, Y., Ghendrih, Ph, Attuel, G., Clément, C., Garbet, X., Grandgirard, V., Ottaviani, M., Benkadda, S., Beyer, P., Bian, N., Figarella, C.

“…Turbulence in the scrape-off layer (SOL) is investigated using a 2D fluid model for the interchange instability as a paradigm. A constant driving flux governs…”
Get full text