scholarly journals Numerical analysis of two-fluid tearing mode instability in a finite aspect ratio cylinder

2018 ◽  
Vol 25 (1) ◽  
pp. 012117
Author(s):  
Atsushi Ito ◽  
Jesús J. Ramos
Keyword(s):  
Numerical Analysis ◽  
Aspect Ratio ◽  
Tearing Mode ◽  
Mode Instability ◽  
Two Fluid

scholarly journals Two-fluid tearing mode instability in cylindrical geometry

2017 ◽  
Vol 24 (7) ◽  
pp. 072102 ◽  
Author(s):  
Atsushi Ito ◽  
Jesús J. Ramos
Keyword(s):  
Cylindrical Geometry ◽  
Tearing Mode ◽  
Mode Instability ◽  
Two Fluid

scholarly journals Suppression of neoclassical tearing mode instability at the initial stage by electron cyclotron current drive

AIP Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 035212
Author(s):  
Zhen Yang ◽  
Bin Wu ◽  
Yuanlai Xie ◽  
Yuqing Chen ◽  
Hongming Zhang ◽  
...  
Keyword(s):  
Electron Cyclotron ◽  
Current Drive ◽  
Tearing Mode ◽  
Mode Instability ◽  
Initial Stage ◽  
Neoclassical Tearing Mode

Numerical Analysis on Performance of Spiral Two-Fluid Atomizer Using Dpm Method

2021 ◽  
Author(s):  
Youn-Jea Kim ◽  
Jin-Woo Lee ◽  
Kuk Jin Jung ◽  
Morely S. Sherman ◽  
Hyun Sin Kim
Keyword(s):  
Numerical Analysis ◽  
Two Fluid

Effect of poloidal equilibrium flow and pressure gradient on the m/n = 2/1 tearing mode

2022 ◽  
Author(s):  
Yue Ming ◽  
Deng Zhou ◽  
Jinfang Wang
Keyword(s):  
Pressure Gradient ◽  
Stability Index ◽  
Plasma Pressure ◽  
Mode Number ◽  
Pressure Perturbation ◽  
Equilibrium Flow ◽  
Tearing Mode ◽  
Mode Instability ◽  
Mode Stability ◽  
Adverse Influence

Abstract The effect of equilibrium poloidal flow and pressure gradient on the m/n = 2/1 (m is the poloidal mode number and n is the toroidal mode number) tearing mode instability for tokamak plasmas is investigated. Based on the condition of ≠0 ( is plasma pressure), the radial part of motion equation is derived and approximately solved for large poloidal mode numbers (m). By solving partial differential equation (Whittaker equation) containing second order singularity, the tearing mode stability index Δ′ is obtained. It is shown that, the effect of equilibrium poloidal flow and pressure gradient has the adverse effect on the tearing mode instability when the pressure gradient is nonzero. The poloidal equilibrium flow with pressure perturbation partially reduces the stability of the classical tearing mode. But the larger pressure gradient in a certain poloidal flow velocity range can abate the adverse influence of equilibrium poloidal flow and pressure gradient. The numerical results do also indicate that the derivative of pressure gradient has a significant influence on the determination of instability region of the poloidal flow with pressure perturbation.

Tearing mode instability in the Bessel function model

1968 ◽  
Vol 10 (12) ◽  
pp. 1101-1104 ◽  
Author(s):  
R D Gibson ◽  
K J Whiteman
Keyword(s):  
Bessel Function ◽  
Tearing Mode ◽  
Mode Instability ◽  
Function Model

scholarly journals The effect of different aspect ratio and bottom heat flux towards contaminant removal using numerical analysis

2013 ◽  
Vol 50 ◽  
pp. 012015
Author(s):  
M N A Saadun ◽  
C S Nor Azwadi ◽  
Z A A Malek ◽  
M Z A Manaf ◽  
M S Zakaria ◽  
...  
Keyword(s):  
Heat Flux ◽  
Numerical Analysis ◽  
Aspect Ratio ◽  
Contaminant Removal ◽  
Bottom Heat
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