Wires capacitive coupling - QuickField simulation example
Calculate electrostatic coupling between two perpendicular wires. See also parallel wires capacitance.
How to find capacitive coupling between perpendicular wires?
Answer Typical applications Geometry
Spacing between wires b = 10 mm, wire 1 diameter d1 = 8 mm, wire 2 diameter d2 = 2 mm. Wire's length L = 200 mm.
Given
Task
Solution
Results
Electric field distribution around wires.
Engineering question
Set up a 3D QuickField Electrostatics problem for perpendicular wires and evaluate capacitive coupling from computed field results.
perpendicular conductors, wiring harness crossings, cable routing intersections
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Simulation problem
Problem Type
3D Import model of Electrostatics.
Calculate mutual capacitance between wires.
To calculate capacitance we assign opposite electric potentials U to the wires: +1V and -1V. QuickField calculates electric field distribution and the total stored energy W. Electric capacitance then is C = 2*W / (ΔU)²
Electric field energy W = 4.58 pJ, potential difference ΔU = 2 V.
Capacitance C = 2*4.58 pJ / 2² = 2.29 pF.
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