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Cylindrical needle to plane
Cylindrical needle to plane electric field
Problem Type:
Axisymmetric problem of electrostatics.
Geometry:
Distance from needle tip to plane surface - 5 mm.
Given:
Relative permittivity of air ε = 1;
Needle potential U = 10 kV
Plate potential 0 V
Problem:
Determine the electric field strength distribution as a function of needle diameter d.
Solution:
Parametric analysis is automated with LabelMover tool.
Results:
Electric potential distribution around the needle, d=2 mm.
Needle diameter d, mm. |
2 |
6 |
10 |
22 |
Electric stress
at the needle tip, kV/mm. |
9.7 |
4.6 |
3.5 |
2.6 |
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