Simulation of Electric Field Distribution in Concrete of Pulse Electro-Osmosis Technology Based on ANSYS Software

2013 ◽  
Vol 353-356 ◽  
pp. 1287-1292
Author(s):  
Jiang Miao Zhu ◽  
Zhi Xin Li ◽  
Ying Wang
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Field Distribution ◽  
Electric Potential ◽  
Electric Field Distribution ◽  
Ansys Software ◽  
Element Analysis ◽  
Electro Osmosis ◽  
Cement Soil

Simulated electric field distribution in concrete by using of ANSYS finite element analysis software, researched influences of some factors on electric field strength and electric potential in concrete. Which include resistivity of cement soil and its electric field strength are inversely proportional and the electric potential distribution is less affected by resistivity changes, applied voltage is proportional to electric field strength and potential, the more the number of cathode induces the greater and uniform of the strength, electric field distribution within cement soil becomes sparse and its values are relatively smaller with the anode spacing increasing, electric field strength of cement-soil is more intensive and its distribution is more uniform and also its values is relatively larger with the decreasing of cathode spacing.

scholarly journals Resolution of electric field distribution and conductivity in a non-uniform electric field: A teaching proposal

2021 ◽  
pp. 1-9
Author(s):  
Mustafa Erol ◽  
İldahan Özdeyiş Çolak
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Field Distribution ◽  
Electric Fields ◽  
Path Length ◽  
Electric Field Distribution ◽  
Specific Conductivity ◽  
Uniform Electric Field ◽  
Field Lines

This work offers an alternative teaching proposal for the instruction of challenging concepts of electric field distribution and specific conductivity in a non-uniform electric field. Specifically, electric field lines are initially plotted and later on the relation between the electric potential difference and electric field strength is validated.  Additionally, on a selected electric field line, electric field strength versus path length and also conductivity versus path length are plotted to comprehend and teach exceedingly difficult concepts of uniform and non-uniform electric fields. In order to accomplish those tasks, a basic conducting sheet, that is simply a wet cardboard, is designed as a part of the apparatus together with a dc power supply, a multi meter and connecting cables. The established method is interesting in the sense that designed the conducting wet cardboard is novel, very practical, beneficial and minimal costing, hence the approach offers physics educators fresh teaching routes and opportunities to clarify the puzzling concepts of electrical field and conductivity.

Electric Field Analysis of 220 kV Composite Material Tower Lines

2012 ◽  
Vol 516-517 ◽  
pp. 1517-1520
Author(s):  
Jian Xun Hu ◽  
Gong Da Zhang ◽  
Hong Yu Zhang ◽  
Xiao Qin Zhang
Keyword(s):  
Composite Material ◽  
Electric Field ◽  
Field Distribution ◽  
Transmission Lines ◽  
Electric Field Distribution ◽  
Field Analysis ◽  
Electric Field Effect ◽  
Transmission Tower ◽  
Element Analysis ◽  
Electric Field Analysis

Using the finite element analysis, this work analyzed the electric field distribution of 220kV transmission steel tower with double-circuit and composite material transmission tower with the same size, and compared the electric field effect of two materials transmission tower for surroundings. And this work compared the vertical and axial electric field distribution along transmission line of the two materials transmission tower. The results indicate the composite material tower can improve the environment of electric field near the transmission lines.

Potential and Electric Field Distribution of 220kV Insulator String with a Faulty Insulator under Windage Yaw Condition

2014 ◽  
Vol 521 ◽  
pp. 317-320
Author(s):  
Hui Hui Li ◽  
Zheng Zheng ◽  
Hong Bo Chen ◽  
Huan Bai ◽  
Hua Zhao Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Field Strength ◽  
Electric Field ◽  
Field Distribution ◽  
Electric Field Distribution ◽  
Field Distributions ◽  
Space Potential ◽  
Suspension Insulator ◽  
Variation Characteristics

Faulty insulators could appear in the HV transmission line insulator string under the comprehensive effect of electrical, mechanical and environmental factors and they can be detected according to the space potential and electric field distribution variation characteristics around the insulator string. Finite Element Method (FEM) was used to study the potential and electric field distributions of a 220kV suspension insulator string contained a zero-value insulator in windage condition, comparing with a fine insulator string. The results show that the variation of the space potential and electric field distributions of insulator string is the same as that under no windage condition. The curve of synthetic electric field along the central axis around the good insulator string is U-shape. The 10th and 11th insulators from the high-voltage end are the sensitive insulators where the distortion ratio of synthetic field strength is higher than 3%, when a faulty insulator is in the string. This result can provide preferences for the online detection of faulty insulators.

scholarly journals Numerical simulation of electrostatic field and flow field in an electro- static precipitator

2019 ◽  
Author(s):  
Yuying Xu ◽  
Baoqing Deng ◽  
Haiyan Zhang ◽  
Xianpeng Chen
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Charge Density ◽  
Electric Field Strength ◽  
Electric Potential ◽  
Electrostatic Precipitator ◽  
Ionic Charge ◽  
The Wire ◽  
Corona Electrode ◽  
Plate Distance

Introduction: The computational fluid dynamics (CFD) simulation of three- dimensional wire-plate electrostatic precipitator is performed in the present study. Materials and methods: The momentum equation, the electric potential equation and current continuity equation are solved by using ANSYS Fluent. The ion charge density at the corona is calculated iteratively using the Peek formula. The SIMPLE algorithm is used to treat the pressure-velocity cou- pling. The RNG k-ε model is used to describe turbulence. Results: The airflow keeps stable away from the first corona electrode. The distribution of the electric potential is dependent on the wire-plate distance and the wire-wire distance. The potential and ion charge density increase with the increase of the wire-plate distance. With the increase of wire-wire dis- tance, the maximum electric field strength decreases whereas the maximum ionic charge density increases. The ion charge density near the second corona electrode is relatively small. A small wire-wire distance will make the electric field concentrated around the wires. Conclusion: According to this study, the wire-wire distance and the wire- plate distance have great effect on the distribution of ion charge density and electric field strength.

Design of Terraced Spinneret Based on Simulation of Electric Field Distribution in Electrospinning

2013 ◽  
Vol 690-693 ◽  
pp. 3132-3135 ◽  
Author(s):  
Guo Jun Jiang ◽  
Sai Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Electric Field ◽  
Field Distribution ◽  
Large Scale ◽  
Electric Field Distribution ◽  
Special Design ◽  
Electrospinning Technique ◽  
Element Analysis ◽  
The Finite Element Analysis

The low productivity of conventional single-needle electrospinning inhibits the application of nanofibers to a commercial level. In order to improve the productivity of the electrospinning technique, a terraced spinneret has been designed based on the finite element analysis in this paper. The electric field distribution was modeled with the use of Ansoft Maxwell software. The experiment results demonstrated this special design spinneret has the potential to produce smooth nanofibers on a large scale.

3D electric field analysis of needleless electrospinning from a ring coil

2013 ◽  
Vol 44 (3) ◽  
pp. 463-476 ◽  
Author(s):  
Xin Wang ◽  
Xungai Wang ◽  
Tong Lin
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Strong Electric Field ◽  
Field Analysis ◽  
Field Profile ◽  
Element Analysis ◽  
Needleless Electrospinning ◽  
Electric Field Analysis ◽  
Electric Field Profile

Concentrated electric field is crucial in generation of needleless electrospinning, the electric field profile together with electric field strength of the spinneret affect the needleless electrospinning performance directly. Understanding the electric field of spinneret would definitely benefit the designing and optimization of needleless electrospinning. Based on the software COMSOL Multiphysics 3.5a, 3D finite element analysis has been used to analyze the electric field profile and electric field strength of a ring spinneret for needleless electrospinning. The electric field profile shows that strong electric field concentrates on the top of the ring with intensity higher than 70 kV/cm. The electric field of ring spinneret is greatly affected by the geometry of the ring and other experimental parameters such as applied voltage and collecting distance. The electric field analysis introduced in this study will be helpful in selecting proper spinneret and scaling up the production rate of nanofibers in needleless electrospinning.

scholarly journals Finite Element Analysis of Disc Insulator Type and Corona Ring Effect on Electric Field Distribution over 230-kV Insulator Strings

2012 ◽  
Vol 1 (4) ◽  
pp. 407 ◽  
Author(s):  
Ebrahim Akbari ◽  
Mohammad Mirzaie ◽  
Abolfazl Rahimnejad ◽  
Mohammad Bagher Asadpoor
Keyword(s):  
Finite Element ◽  
Electric Field ◽  
Power Systems ◽  
Field Distribution ◽  
Electric Field Distribution ◽  
Three Dimensional ◽  
Operation Time ◽  
Voltage Distribution ◽  
Element Analysis ◽  
Phase Conductors

Insulator strings are widely used in power systems for the dual task of mechanically supporting and electrically isolating the live phase conductors from the support tower. However, the electric field and voltage distribution of insulator string is uneven which may easily lead to corona, insulators surface deterioration and even flashover. So the calculation of the electric field and voltage distribution along them is a very important factor in the operation time. Besides, despite the variety of insulator material and profiles, no remarkable endeavor regarding their impacts upon electric field distribution has been made so far. In this paper, three-dimensional Finite Element Method (3-D FEM) softwareMaxwell is employed to simulate several 230-kV insulator strings with various types of porcelain and glass disc insulators and the electric field along them were compared, to investigate the effect of insulator types on electric field distribution.

Non-parallellism of needles in electroporation: 3D computational model and experimental analysis

2019 ◽  
Vol 38 (1) ◽  
pp. 348-361 ◽  
Author(s):  
Luca G. Campana ◽  
Paolo Di Barba ◽  
Fabrizio Dughiero ◽  
Michele Forzan ◽  
Maria Evelina Mognaschi ◽  
...  
Keyword(s):  
Electric Field ◽  
Field Distribution ◽  
Electric Field Distribution ◽  
Numerical Models ◽  
Electrode Position ◽  
Element Analysis ◽  
Actual Distribution ◽  
Content Type ◽  
The One ◽  
Distribution Of Electric Field

PurposeIn electrochemotherapy, flexible electrodes, composed by an array of needles, are applied to human tissues to treat large surface tumors. The positioning of the needles in the tissue depends on the surface curvature. The parallel needle case is preferred, as their relative inclinations strongly affect the actual distribution of electric field. Nevertheless, in some case, small inclinations are unavoidable. The purpose of this paper is to study the electric field distribution for non-parallel needles.Design/methodology/approachThe effect of electrode position is evaluated systematically by means of numerical models and experiments on phantoms for two different angles (5° and 30°) and compared with the case of parallel needles. Potato model was used as phantom, as this tissue becomes dark after few hours from electroporation. The electroporation degree was gauged from the color changings on the potatoes.FindingsThe distribution of electric field in different needle configuration is found by means of finite element analysis (FEA) and experiments on potatoes. The electric field level of inclined needles was compared with parallel needle case. In particular, the electric field distribution in the case of inclined needles could be very different with respect to the one in the case of parallel needles. The degree of enhancement for different inclinations is visualized by potato color intensity. The FEA suggested that the needle parallelism has to be maintained as possible as if the tips are closer to each other, the electric field intensity could be different with respect to the one in the case of parallel needles.Originality/valueThis paper analyzes the effect of inclined electrodes considering also the non-linearity of tissues.

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