Electric Field Analysis (efield)
Analysis of the electric field produced by either static, or quasi-static
electric charges and/or voltage distributions. Due to the static or
quasi-static nature of the excitations, the governing electromagnetic
equations reduce to Poisson's or Laplace's equations. The electrostatic
potential commonly called as voltage, remain as the basic unknown
field quantity.
Two distinct categories arise with electric field analysis:
- Electrostatic analysis (ESTAT)
- Steady current flow analysis (SCFL)
Electrostatic Analysis
Electric field produced in a system of dielectric media due to static bulk
charges and/or applied voltages.
Inputs:
- Linear, isotropic or anisotropic material properties: Dielectric
permittivities of the participating media
- Specified charge distributions in the media and specified voltages
at the boundaries
- Specified flux flow across the problem boundaries, if any
- Homogeneous Neumann's boundary for the flux parallel
boundaries
- Specification of the “open boundary”, if any in the problem,
through infinite elements
- Specification of the moving object for force/torque calculations
Outputs:
- Electrostatic potential distribution
- Electric field intensity and Electric flux density distributions
- Stored electric energy for each element
- Total stored electric energy
- Capacitance
- Force or Torque on the moving object
For the post processing, potential, electric field intensity and electric
flux densities are available.
Typical problems that can be analysed using this analysis type are:
- Capacitors
- Electrostatic precipitators
- Transmission lines
- Multi-conductor distribution with specified voltages
- Transformers and wall bushings for the insulation studies
- Outdoor insulators
- Supporting insulator blocks
- Design of corona shields
- Dielectric breakdown studies in High Voltage Engineering
problems
HIGHLIGHTS
- Integrated with DISPLAY III for easy and effective pre- and post
processing
- Two dimensional and three dimensional electromagnetic problems
- Linear, nonlinear and anisotropic materials
- Steady and/or time varying excitations
- Ouput of various design parameters critical for design optimisatio
Steady Current Flow Analysis
Electric field produced in a system of conducting media due to
applied voltages.
Inputs:
- Linear, functional, isotropic or anisotropic material properties:
Electrical conductivities of the participating media
- Specified voltages at the boundaries
- Specified current flow across the problem boundaries, if any
- Homogeneous Neumann's boundary for the flow parallel
boundaries
- Specification of the “open boundary” if any in the problem
through infinite elements
Outputs:
- Electric potential distribution
- Electric field intensity and Current density distributions
- Dissipated electric energy for each element
- Total dissipated electric energy
- Conductance
For the post processing, potential, electric field intensity and electric
current densities are available.
Typical problems that can be analysed using this analysis type are:
- Resistance of the arbitrary shaped conductors
- Particle counter in Tomography
- Particle detection in Bio-Medical Engineering
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