Spark plug electric field

Problem Type: 3D electrostatics.

Geometry: 3D import.

Given:
Relative permittivity of air ε₀ = 1,
Relative permittivity of insulator ε_r = 5,
High DC voltage V = 15 kV.

Task:
Calculate the electric field stress distribution in the spark plug air gap.

Solution:
We simulate only the area around the spark gap. The other parts of the spark plug are excluded.

Results:

Electric field distribution in the spark gap:

See the spark_plug.pbm problem in the Examples folder.