Resistive wall effect on the stability of planar relativistic Brillouin flow

1982 ◽  
Vol 25 (8) ◽  
pp. 1342 ◽  
Author(s):  
David P. Chernin
Keyword(s):  
Wall Effect ◽  
Resistive Wall ◽  
The Stability ◽  
Brillouin Flow

scholarly journals Slit Wall Effect on the Stability of Wavy Vortex Flow

2014 ◽  
Vol 6 ◽  
pp. 853069 ◽  
Author(s):  
Dong Liu ◽  
Ying-ze Wang ◽  
Hyoung-Bum Kim ◽  
Fang-neng Zhu ◽  
Chun-lin Wang
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Radial Velocity ◽  
Flow Regime ◽  
Experimental Measurement ◽  
Vortex Flow ◽  
Wall Effect ◽  
Taylor Vortices ◽  
Simulation Results ◽  
The Stability

The wavy vortex flow in the plain model was studied by experimental measurement; the preliminary feature of wavy vortex flow was obtained. This flow field in the plain model was also studied by numerical simulation. The reliability of numerical simulation was verified by comparing with the experimental and numerical simulation results. To study the slit wall effect on the wavy vortex flow regime, another two models with different slit number were considered; the slit number was 6 and 12. By comparing the wavy vortex flow field in different models, the axial fluctuation of Taylor vortices was found to be different, which was increased with the increasing of slit number. The maximum radial velocity from the inner cylinder to the outer one in the 6-slit number was increased by 12.7% compared to that of plain model. From the results of different circumferential position in the same slit model, it can be found that the maximum radial velocity in slit plane is significantly greater than that in other planes. The size of Taylor vortices in different models was also calculated, which was found to be increased in the 6-slit model but was not changed as the slit number increased further.

Plasma stability theory including the resistive wall effects

2015 ◽  
Vol 81 (6) ◽  
Author(s):  
V. D. Pustovitov
Keyword(s):  
Stability Theory ◽  
Nonlinear Function ◽  
Thin Wall ◽  
Conducting Wall ◽  
Resistive Wall ◽  
Energy Sink ◽  
The Stability ◽  
Resistive Wall Modes ◽  
Complex Growth Rate ◽  
Plasma Stabilization

Plasma stabilization due to a nearby conducting wall can provide access to better performance in some scenarios in tokamaks. This was proved by experiments with an essential gain in${\it\beta}$and demonstrated as a long-lasting effect at sufficiently fast plasma rotation in the DIII-D tokamak (see, for example, Straitet al.,Nucl. Fusion, vol. 43, 2003, pp. 430–440). The rotational stabilization is the central topic of this review, though eventually the mode rotation gains significance. The analysis is based on the first-principle equations describing the energy balance with dissipation in the resistive wall. The method emphasizes derivation of the dispersion relations for the modes which are faster than the conventional resistive wall modes, but slower than the ideal magnetohydrodynamics modes. Both the standard thin wall and ideal-wall approximations are not valid in this range. Here, these are replaced by an approach incorporating the skin effect in the wall. This new element in the stability theory makes the energy sink a nonlinear function of the complex growth rate. An important consequence is that a mode rotating above a critical level can provide a damping effect sufficient for instability suppression. Estimates are given and applications are discussed.

Numerical Studies on Resistive Wall Instabilities in Cylindrical Plasma Confined by Surface Current

2011 ◽  
Vol 50-51 ◽  
pp. 785-789
Author(s):  
Shao Yan Cui ◽  
Peng Xie
Keyword(s):  
Plasma Flow ◽  
Initial Perturbation ◽  
Surface Current ◽  
Cylindrical Plasma ◽  
Resistive Wall Mode ◽  
Numerical Studies ◽  
Function Distribution ◽  
Resistive Wall ◽  
Dirac Function ◽  
The Stability

The stability of resistive wall mode is studied in cylindrical plasma confined by surface current, which is Dirac -function distribution. For Dirac -function distribution case, it is shown that the perturbations oscillate and even decline wherever the initial perturbation seed is placed. The whole system is stable and the plasma flow has little effect on it.

The influence of a thick resistive wall on the stability of a pinch

1980 ◽  
Vol 20 (4) ◽  
pp. 443-449 ◽  
Author(s):  
G.F. Nalesso ◽  
S. Costa
Keyword(s):  
Resistive Wall ◽  
The Stability

Effect of plasma-wall separation on the stability of resistive wall modes in the JT-60U tokamak

2006 ◽  
Vol 49 (1) ◽  
pp. 95-103 ◽  
Author(s):  
G Matsunaga ◽  
M Takechi ◽  
G Kurita ◽  
T Ozeki ◽  
Y Kamada ◽  
...  
Keyword(s):  
Resistive Wall ◽  
The Stability ◽  
Resistive Wall Modes

scholarly journals Combined effects of trapped energetic ions and resistive layer damping on the stability of the resistive wall mode

2016 ◽  
Vol 23 (1) ◽  
pp. 012506 ◽  
Author(s):  
Yuling He ◽  
Yueqiang Liu ◽  
Yue Liu ◽  
Chao Liu ◽  
Guoliang Xia ◽  
...  
Keyword(s):  
Combined Effects ◽  
Resistive Layer ◽  
Energetic Ions ◽  
Resistive Wall Mode ◽  
Resistive Wall ◽  
The Stability
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