A boundary-finite element method to compute directly electric field intensity with high accuracy

1988 ◽  
Vol 3 (4) ◽  
pp. 1754-1760 ◽  
Author(s):  
H. Yamashita ◽  
K. Shinozaki ◽  
E. Nakamae
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electric Field ◽  
Field Intensity ◽  
Electric Field Intensity ◽  
High Accuracy ◽  
Element Method

Modeling the Variation of Electric Field Pattern on Porcelain Insulators by the Deposition of Dust Particles Using Finite Element Method

2020 ◽  
Vol 12 (6) ◽  
pp. 840-843
Author(s):  
Asaad Shemshadi ◽  
Pourya Khorampour
Keyword(s):  
Finite Element Method ◽  
Adverse Effect ◽  
Finite Element ◽  
Electric Field ◽  
Field Intensity ◽  
Electric Field Intensity ◽  
Field Pattern ◽  
Dust Layer ◽  
Porcelain Insulators ◽  
Element Method

The purpose of this paper is to investigate the changes in the electric field intensity due to the presence of dust on the 63 kV porcelain insulators using finite element method (FEM). The investigating Insulators were drawn in three different models (without dust layer as a basic structure, with uniform dust layer and heterogeneous dust layer) using AutoCAD software and in continue are analyzed with utilization of COMSOL software. Finally the derived values are analyzed and discussed in details. It is shown that the dust layer has an adverse effect on the electric field pattern, and the higher the concentration and volume of dust placed on the surface of insulators, results to an adverse effect on the electric field intensity around the porcelain insulator.

scholarly journals Effect of Material Thickness on Attenuation (dB) of PTFE Using Finite Element Method at X-Band Frequency

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Abubakar Yakubu ◽  
Zulkifly Abbas ◽  
Mansor Hashim
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electric Field ◽  
Rectangular Waveguide ◽  
Electric Field Intensity ◽  
Reflection Coefficients ◽  
Band Frequency ◽  
Ptfe Sample ◽  
X Band ◽  
Element Method

PTFE samples were prepared with different thicknesses. Their electric field intensity and distribution of the PTFE samples placed inside a rectangular waveguide were simulated using finite element method. The calculation of transmission/reflection coefficients for all samples thickness was achieved via FEM. Amongst other observable features, result from calculation using FEM showed that the attenuation for the 15 mm PTFE sample is −3.32 dB; the 30 mm thick PTFE sample has an attenuation of 0.64 dB, while the 50 mm thick PTFE sample has an attenuation of 1.97 dB. It then suffices to say that, as the thickness of the PTFE sample increases, the attenuation of the samples at the corresponding thicknesses increases.

Simulation about Multi-Needle Electrospinning Based on Finite Element Method

2011 ◽  
Vol 332-334 ◽  
pp. 2157-2160 ◽  
Author(s):  
Ling Ling Guo ◽  
Yan Bo Liu ◽  
Yu Zheng
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Electric Field ◽  
Field Intensity ◽  
Electric Field Intensity ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Needle Diameter ◽  
Design And Manufacture

In the current study, the finite element analysis was used to simulate the change in electric field intensity due to the change of needle diameter and length, receiving distance，voltage and the spacing between needles located in a row. The resulting conclusion could be used to guide the design and manufacture of electrospinning machines at industrial scale.

scholarly journals ANALYSIS OF ELECTRIC FIELD AND POTENTIAL DISTRIBUTION OF EXPERIMENTAL SETUP FOR INITIATING AND GROWING VENTED TYPE WATER TREES USING FINITE ELEMENT METHOD

2020 ◽  
Vol 20 (3) ◽  
pp. 755-766
Author(s):  
MUSTAFA KARHAN ◽  
MUSA FARUK CAKIR ◽  
MUKDEN UGUR
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electric Field ◽  
Potential Distribution ◽  
Power Transmission ◽  
High Accuracy ◽  
Test Material ◽  
Experimental Setup ◽  
Plate Electrode ◽  
Element Method

Water treeing phenomenon has an important and effective role in the service life of polymeric insulators used in the transmission and distribution of electricity. Water trees can be described as permanently localized degradations or damages that can occur in the presence of electric field and humidity. XLPE is widely used as a polymeric insulator material in medium and high voltage cable applications. An experimental setup was prepared to initiate and grow water trees artificially in a laboratory environment and the tests were performed in accordance with the actual values. The electrical and dielectric values of the test material were used for a detailed analysis with high accuracy. The magnitude of the electric field, which was defined by varying the distance between the water needles formed in the XLPE material and the aluminium plate electrode, has been analyzed for various conditions. After laboratory experiments, electric field and potential distribution were simulated and analyzed by FEM (Finite Element Method) using FEMM (Finite Element Method Magnetics) software package. Experiments revealed clearly, that even small changes in the shape of water needle can dramatically affect the electric field and hence the lifetime of the insulator. By using FEMM, both of these parameters (electric field and potential distribution) can be calculated rapidly with high accuracy. HVDC power cables play a significant role in electric power transmission, hence by using the previously described experimental setup, electric field and potential distribution were simulated and analyzed under DC voltage.

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