Results 1 to 10 of about 60,122 (133)

Numerical modelling of error field penetration [PDF]

Nuclear Fusion, 2008
Error field (or externally applied helical field) penetration is studied numerically based on the two fluids equations. It is shown that there is a minimum in the required field amplitude when the applied helical field frequency is the same as the mode frequency being determined by both the background equilibrium plasma rotation and the diamagnetic ...
Qingquan Yu
exaly   +4 more sources

The effect of plasma beta on error-field penetration in radio-frequency wave heated plasmas in EAST

Nuclear Fusion, 2023
The plasma-beta effect on the n  = 1 resonant magnetic perturbation (RMP) field penetration in purely radio-frequency (RF) wave heated discharges has been investigated in EAST.
Cheng Ye, You-Wen Sun, Hui-Hui Wang, Yue-Qiang Liu, Tong-Hui Shi, Qing Zang, Tian-Qi Jia, Qun Ma, Shuai Gu, Nan Chu, Kai-Yang He, Man-Ni Jia, Xue-Min Wu, Peng-Cheng Xie, Hui Sheng, Hua Yang, Lian-Sheng Huang, Biao Shen, Miao-Hui Li, Jin-Ping Qian, the EAST Team   +20 more
doaj   +2 more sources

Nonlinear modeling of the scaling law for the m/n=3/2 error field penetration threshold [PDF]

Nuclear Fusion, 2020
post ...
Carlos Paz-Soldan, Raffi Nazikian, Qiming Hu   +2 more
exaly   +4 more sources

Toroidal modeling of the effect of resonant q95 on n = 1 error field penetration in EAST

Nuclear Fusion
The plasma response to the n  = 1 resonant magnetic perturbation in EAST has been systematically investigated using the MARS-F/Q codes, focusing on the roles of q _95 and $\beta_\mathrm N$ in error field penetration.
Cheng Ye, You-Wen Sun, Hui-Hui Wang, Yue-Qiang Liu, Jian Xu, Peng-Cheng Xie, Hui Sheng   +6 more
doaj   +2 more sources

Measurements of the toroidal torque balance of error field penetration locked modes

Plasma Physics and Controlled Fusion, 2015
Detailed measurements from the DIII-D tokamak of the toroidal dynamics of error field penetration locked modes under the influence of slowly evolving external fields, enable study of the toroidal torques on the mode, including interaction with the intrinsic error field.
Carlos Paz-Soldan, Edward J. Strait
exaly   +3 more sources

Triggering of Neoclassical Tearing Mode by Error Field Penetration

Plasma and Fusion Research, 2018
Ryusuke Numata, Seiya Nishimura
exaly   +3 more sources

Estimating Penetration Rate of Excavation Machine Using Geotechnical Parameters and Neural Networks in Tabriz Metro [PDF]

Analytical and Numerical Methods in Mining Engineering, 2023
In this study, the penetration rate of the excavation machine in Tabriz Metro Line 2 using geotechnical parameters and neural networks is estimated. For this purpose, through comprehensive analysis, including borehole drilling, field and laboratory tests,
Samaneh Khodaee Ashestani, Hamid Chakeri, Mohammad Darbor, Erfan Khoshzaher, Seyyed Shahab Eddin Bazargan   +4 more
doaj   +1 more source

Empirical scaling of the n = 2 error field penetration threshold in tokamaks [PDF]

Nuclear Fusion, 2020
This paper presents a multi-machine, multi-parameter scaling law for the n = 2 core resonant error field threshold that leads to field penetration, locked modes, and disruptions. Here, n is the toroidal harmonic of the non-axisymmetric error field (EF).
N.C. Logan, J.-K. Park, Q. Hu, C. Paz-Soldan, T. Markovic, H. Wang, Y. In, L. Piron, P. Piovesan, C.E. Myers, M. Maraschek, S.M. Wolfe, E.J. Strait, S. Munaretto   +13 more
openaire   +6 more sources

The effect of plasma toroidal rotation on n = 1 resonant magnetic perturbation field penetration under low neutral beam injection torque in EAST

Nuclear Fusion, 2023
An experiment was conducted to study the mode penetration of $n = 1$ resonant magnetic perturbation (RMP) in EAST under low neutral beam injection torque in the co-current direction (Co-NBI). The experimental results indicate that the threshold current ${
Cheng Ye, You-Wen Sun, Hui-Hui Wang, Yue-Qiang Liu, Tong-Hui Shi, Ying-Ying Li, Qing Zang, Di-An Lu, Tian-Qi Jia, Qun Ma, Shuai Gu, Nan Chu, Kai-Yang He, Man-Ni Jia, Xue-Min Wu, Peng-Cheng Xie, Hui Sheng, Hua Yang, Lian-Sheng Huang, Biao Shen, Bao-Nian Wan, the EAST Team   +21 more
doaj   +1 more source

Comparison of two different artificial neural network models for prediction of soil penetration resistance

Journal of Agricultural Engineering, 2023
A time-varying, nonlinear soil-plant system contains many unknown elements that can be quantified based on analytical methodologies. Artificial Neural Networks (ANNs) are a widely used mathematical computing, modelling, and predicting method that ...
İlker Ünal, Önder Kabas, Salih Sözer
doaj   +1 more source