Example2 Parallel-Plate Dielectric Capacitor

General

• The capacitor analyzed in this exercise consists of two parallel conductive plates with an alumina block placed between them.
   

• The capacitance, the electric field, and the equipotential map are solved.
   

• Unless specified in the list below, the default conditions will be applied.
   

Analysis Space

Analysis Conditions

Select “Static analysis” as the potential is static.

The electric field exists outside the analysis domain. Therefore the open boundary condition below is applied initially.

Model

Create a cubic solid body for the dielectric capacitor.

Set the boundary condition of the voltage on the top and bottom faces of the capacitor.

Body Attributes and Materials

A block of alumina is defined.

* Available from the Material DB

Boundary Conditions

To set Outer Boundary Condition, go to the [Model] tab
 

and click [Outer Boundary Condition] .

Results

To see the calculation results, go to the [Results] tab

 and click [Table] .

The vectors of the electric field are shown below.

The electric field is generated between two electrodes.

The vectors of the electric flux density are shown below.

The electric flux density is concentrated in the alumina block.