000215373 001__ 215373
000215373 005__ 20190617200736.0
000215373 0247_ $$2doi$$a10.1088/0741-3335/58/4/044005
000215373 022__ $$a0741-3335
000215373 02470 $$2ISI$$a000371818600008
000215373 037__ $$aARTICLE
000215373 245__ $$aBlob dynamics in the TORPEX experiment: a multi-code validation
000215373 269__ $$a2016
000215373 260__ $$bInstitute of Physics$$c2016$$aBristol
000215373 300__ $$a16
000215373 336__ $$aJournal Articles
000215373 520__ $$aThree-dimensional and two-dimensional seeded blob simulations are performed with five different fluid models, all based on the drift-reduced Braginskii equations, and the numerical results are compared among themselves and validated against experimental measurements provided by the TORPEX device (Fasoli et al, 2006, Phys. Plasmas 13 055902). The five models are implemented in four simulation codes, typically used to simulate the plasma dynamics in the tokamak scrape-off layer, namely BOUT++ (Dudson et al, 2009, Comput. Phys. Commun. 180 1467), GBS (Ricci et al, 2012, Plasma Phys. Control. Fusion 54 124047), HESEL (Nielsen et al, 2015, Phys. Lett. A 379 3097), and TOKAM3X (Tamain et al, 2014, Contrib. Plasma Phys. 54 555). Three blobs with different velocities and different stability properties are simulated. The differences observed among the simulation results and the different levels of agreement with experimental measurements are investigated, increasing our confidence in our simulation tools and shedding light on the blob dynamics. The comparisons demonstrate that the radial blob dynamics observed in the three-dimensional simulations is in good agreement with experimental measurements and that, in the present experimental scenario, the two-dimensional model derived under the assumption of k_//=0 is able to recover the blob dynamics observed in the three-dimensional simulations. Moreover, it is found that an accurate measurement of the blob temperature is important to perform reliable seeded blob simulations.
000215373 6531_ $$aCRPP_EDGE
000215373 700__ $$0247340$$g180965$$aRiva, Fabio
000215373 700__ $$0240122$$g176621$$aColin, Clothilde
000215373 700__ $$aDenis, Julien
000215373 700__ $$aEasy, Luke
000215373 700__ $$0240068$$g111055$$aFurno, Ivo
000215373 700__ $$aMadsen, Jens
000215373 700__ $$aMilitello, Fulvio
000215373 700__ $$aNaulin, Volker
000215373 700__ $$aNielsen, Anders Henry
000215373 700__ $$aOlsen, Jeppe Miki Busk
000215373 700__ $$aOmotani, John Tomotaro
000215373 700__ $$aRasmussen, Jens Juul
000215373 700__ $$0240122$$g176621$$aRicci, Paolo
000215373 700__ $$aSerre, Eric
000215373 700__ $$aTamain, Patrick
000215373 700__ $$0240123$$g176719$$aTheiler, Christian Gabriel
000215373 773__ $$j58$$tPlasma Physics and Controlled Fusion$$k4$$q044005
000215373 8564_ $$uhttp://iopscience.iop.org/article/10.1088/0741-3335/58/4/044005$$zURL
000215373 8564_ $$uhttps://infoscience.epfl.ch/record/215373/files/Riva2016postprint.pdf$$zPostprint$$s1535116$$yPostprint
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000215373 909CO $$qGLOBAL_SET$$pSB$$particle$$ooai:infoscience.tind.io:215373
000215373 917Z8 $$x180965
000215373 937__ $$aEPFL-ARTICLE-215373
000215373 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000215373 980__ $$aARTICLE