Electric Field Distribution Measurement Equipment Calibration Based on Electric Field Calculation of Space

2012 ◽  
Vol 6 (16) ◽  
pp. 524-531
Author(s):  
Hua Zhang ◽  
Xiangjun Wang ◽  
Chaolong Shan ◽  
Shu Zhang ◽  
Sining Zhou
Keyword(s):  
Electric Field ◽  
Field Distribution ◽  
Electric Field Distribution ◽  
Measurement Equipment ◽  
Field Calculation ◽  
Distribution Measurement ◽  
Electric Field Calculation

Electron beam modeling and analyses of the electric field distribution and space charge effect

2021 ◽  
Author(s):  
Jiang Yueling ◽  
Dong Quanlin
Keyword(s):  
Electron Beam ◽  
Electric Field ◽  
Space Charge ◽  
Field Distribution ◽  
Electric Field Distribution ◽  
Space Charge Effect ◽  
Electron Beam Current ◽  
Field Calculation ◽  
Charge Effect ◽  
Cross Sectional

Abstract In electron beam technology, the critical focus of research and development efforts is on improving the measurement of electron beam parameters. The parameters are closely related to the generation, emission, operation environment, and role of the electron beam and the corresponding medium. In this study, a field calculation method is proposed, and the electric field intensity distribution on the electron beam’s cross-section is analyzed. The characteristics of beam diffusion caused by the space charge effect are investigated in a simulation, obtained data are compared with the experiment. The simulation demonstrated that the cross-sectional electric field distribution is primarily affected by the electron beam current, current density distribution, and electron beam propagation speed.

Electric Field Calculation of Pipe with Cathodic Protection in Seawater by BEM

2014 ◽  
Vol 621 ◽  
pp. 230-234
Author(s):  
Jian Hong Tan ◽  
Shi Qin Wang ◽  
Sheng Tao Zhang ◽  
Bin Xiang ◽  
Guo Qing Zhang
Keyword(s):  
Electric Field ◽  
Cathodic Protection ◽  
Potential Distribution ◽  
Electric Field Distribution ◽  
Sea Water ◽  
Boundary Element Methods ◽  
Field Calculation ◽  
Pipe Surface ◽  
Corrosion State ◽  
Electric Field Calculation

To investigate the corrosion state of subsea pipeline under cathodic protection, the surface potential distribution of the pipeline has to be measured exactly, but it’s very difficult to measure directly in actually. On base of boundary element methods (BEM), a 2D model about pipe’s cathodic protection under sea water was established, and then software to calculate the electric field distribution on pipe surface in even media (seawater) was developed by way of Matlab. The developed software was verified through an experiment in lab. The result shows that numerical calculation based on BEM by Matlab is feasible for cathodic protection electric field of pipe in marine environment.

Temperature and electric field distribution measurement inside of the LHD helical conductor

2000 ◽  
Vol 10 (1) ◽  
pp. 1259-1262 ◽  
Author(s):  
V.S. Vysotsky ◽  
Yu.A. Ilyin ◽  
S. Sato ◽  
M. Takeo ◽  
N. Yanagi ◽  
...  
Keyword(s):  
Electric Field ◽  
Field Distribution ◽  
Electric Field Distribution ◽  
Distribution Measurement
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