ITER transient consequences for material damage: modelling versus experiments

Базылев, Б.; Janeschitz, G.; Landman, I.; Pestchanyi, S.; Loarte, A.; Federici, G.; Merola, M.; Linke, J.; Zhitlukhin, A.M.; Podkovyrov, V. L.; Климов, Н. С.; Safronov, V.M.

doi:10.1088/0031-8949/2007/t128/044

Cited by 41 publications

(36 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the non-linear phase, the n=5 harmonic decays to small amplitude and the n=2 and n=4 harmonics become dominant as shown in Figure 14(b) (compared to n=1 in the case #145117). The amplitude of the magnetic energy perturbations of the saturated dominant modes n= [2,4] of the KPM for #153440 are similar to those of n= [1,2] for #145117 and, correspondingly, the particle losses caused by the n = [2,4] saturated modes are similar to those in #145117, as shown in Figure 15 while temperature losses remain very small. It is interesting to note that to obtain a toroidal localization, which is the lower energy state of the saturated KPMs obtained in JOREK modelling, the harmonics which are a multiple of the dominant mode need to be locked in phase.…”

Section: Linear Mhd Stability Analysismentioning

confidence: 55%

Nonlinear MHD simulations of Quiescent H-mode plasmas in DIII-D

et al. 2015

View full text Add to dashboard Cite

In the Quiescent H-mode (QH-mode) regime, the edge harmonic oscillation (EHO), thought to be a saturated kink-peeling mode (KPM) driven unstable by current and rotation, is found in experiment to provide sufficient stationary edge particle transport to avoid the periodic expulsion of particles and energy by edge localized modes (ELMs). In this paper, both linear and nonlinear MHD modelling of QH-mode plasmas from the DIII-D tokamak have been investigated to understand the mechanism leading to the appearance of the EHO in QH-mode plasmas. For the first time nonlinear MHD simulations with low-n modes both with ideal wall and resistive wall boundary conditions have been carried out with 3-D non-linear MHD code JOREK. The results show, in agreement with the original conjectures, that, in the nonlinear phase, kink peeling modes are the main unstable modes in QH-mode plasmas of DIII-D and that the kink-peeling modes saturate non-linearly leading to a 3-D stationary state. The characteristics of the kink-peeling modes, in terms of mode structure and associated decrease of the edge plasma density associated with them, are in good agreement with experimental measurements of the EHO in DIII-D. The effect of plasma resistivity, the role of plasma parallel rotation as well as the effect of the conductivity of the vacuum vessel wall on the destabilization and saturation of kink-peeling modes have been evaluated for experimental QH-mode plasma conditions in DIII-D.

show abstract

Section: Linear Mhd Stability Analysismentioning

confidence: 55%

Nonlinear MHD simulations of Quiescent H-mode plasmas in DIII-D

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The obtained results will be used to validate the codes MEMOS, PEGASUS and PHEMOBRID [9][10][11][12][13] developed in FZK which have been then applied to model the erosion of the divertor and main chamber ITER PFCs under expected transient loads.…”

Section: Discussionmentioning

confidence: 99%

“…A series of experiments of ITER-like PFCs erosion study under ELM-and disruption-like plasma heat loads was carried out at the quasistationary plasma accelerator QSPA-T located in SRC RF TRINITI (Russia) to obtain the data for the empirical evaluation of the PFC lifetime under transient loads in ITER and to validate the available numerical models [9][10][11][12][13] used to predict such erosion under the expected conditions in ITER.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of PFCs erosion under ITER-like transient loads at plasma gun facility QSPA

Климов

Podkovyrov

Zhitlukhin

et al. 2009

Journal of Nuclear Materials

124

View full text Add to dashboard Cite

“…Numerical simulations are performed with the Monte Carlo Energy Deposition code ENDEP together with the Fluid Melt Motion on Surface 3-D code MEMOS [5] in order to calculate the energy deposition into W armours of various thickness and the level of erosion caused by the RE and VDE impact. The ENDEP code calculates the armor melting, evaporation, and the heat transport in various material structures.…”

Section: Introductionmentioning

confidence: 99%

“…The thermal analysis was performed with the code MEMOS which solves 3D thermal diffusion equation in sandwich type various materials structures. The code has also the capability to account for armour evaporation and melting and sub-cooled boiling at the coolant tubes [5]. …”

Section: Introductionmentioning

confidence: 99%