scholarly journals Spectral and correlation analysis of microturbulences in the spherical Globus-M/M2 tokamaks

2021 ◽  
Vol 2103 (1) ◽  
pp. 012210
Author(s):  
A M Ponomarenko ◽  
V V Bulanin ◽  
V K Gusev ◽  
V B Minaev ◽  
A V Petrov ◽  
...  
Keyword(s):  
Correlation Analysis ◽  
Data Processing ◽  
Limit Cycle ◽  
Density Fluctuations ◽  
Velocity Shear ◽  
Limit Cycle Oscillations ◽  
Operational Mode ◽  
Localized Modes ◽  
Edge Localized Modes ◽  
Backscattering Method

Abstract Results of the studies on turbulences carried out on the Globus-M2 and Globus-M tokamaks are presented. The main focus was on the analysis of the data obtained using Doppler backscattering method (DBS). The developed codes for the analysis of DBS signals allowed to study the effects of turbulences on the operational mode of the tokamak. A description of the data processing codes is also included. The analysis performed indicates the suppression of turbulence and the formation of a velocity shear during the L-H transition. It was also successfully used to study density fluctuations during and between edge localized modes (ELMs). Spectral and correlation analysis also led to the discovery of limit-cycle oscillations (LCO) and quasi coherent fluctuations (QCFs) during the I-phase.

scholarly journals Correlation analysis for energy losses, waiting times and durations of type I edge-localized modes in the Joint European Torus

2017 ◽  
Vol 57 (3) ◽  
pp. 036026 ◽  
Author(s):  
A. Shabbir ◽  
G. Verdoolaege ◽  
G. Hornung ◽  
O.J.W.F. Kardaun ◽  
H. Zohm ◽  
...  
Keyword(s):  
Correlation Analysis ◽  
Waiting Times ◽  
Energy Losses ◽  
Type I ◽  
Localized Modes ◽  
Edge Localized Modes

Mechanical Performances of ITER In-Vessel Coil’s Conductor

2013 ◽  
Author(s):  
Huan Jin ◽  
Wu Yu ◽  
Feng Long ◽  
Min Yu ◽  
Qiyang Han ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Strong Coupling ◽  
Thermal Fatigue ◽  
Work Conditions ◽  
Nuclear Radiation ◽  
Localized Modes ◽  
Edge Localized Modes ◽  
Point Bend ◽  
Mechanical Performances

The design and R&D for ITER In-Vessel Coils (IVCs) is being deployed. The concerned issue of “Edge Localized Modes” (ELMs) and “Vertical Stabilization” (VS) of the ITER plasma can be addressed by the implemented IVCs. The ELM and VS coils will be installed in the vessel just behind the blanket shield modules to reach the requirement of keeping strong coupling with the plasma. The 59mm Stainless Steel Jacketed Mineral Insulated Conductor (SSMIC) using MgO as the insulation is being designed for the IVCs to resist the special challenges, including the nuclear radiation, high temperature, electromagnetic and thermal fatigue. It is necessary to take the mechanical performances of the SSMIC and the feasibility of fabrication techniques into consideration of the R&D program. The mechanical performances of the SSMIC close to the actual work conditions, including the three point bend modulus, three point bend cyclical performance and the cyclical performance with a U-bend sample of the SSMIC prototypes have been investigated and the results are presented in this paper.

Simulation of aircraft-pilot coupling as limit-cycle oscillations

1998 ◽  
Author(s):  
Guofeng Lin ◽  
Edward Lan ◽  
Jay Brandon
Keyword(s):  
Limit Cycle ◽  
Limit Cycle Oscillations

Sensitivity analysis of limit cycle oscillations

2012 ◽  
Vol 231 (8) ◽  
pp. 3228-3245 ◽  
Author(s):  
Joshua A. Krakos ◽  
Qiqi Wang ◽  
Steven R. Hall ◽  
David L. Darmofal
Keyword(s):  
Sensitivity Analysis ◽  
Limit Cycle ◽  
Limit Cycle Oscillations

scholarly journals On the onset of type I edge localized modes

2009 ◽  
Vol 49 (4) ◽  
pp. 049801
Author(s):  
G.Y Antar ◽  
S.I Krasheninnikov ◽  
P.B Snyder ◽  
R.A Moyer ◽  
R Pugno ◽  
...  
Keyword(s):  
Type I ◽  
Localized Modes ◽  
Edge Localized Modes
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