Wires capacitive coupling - QuickField simulation example
Mutual capacitance between two perpendicular wires, quantifying electrostatic coupling from the electric field created by opposite conductor potentials.. 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
Assign opposite potentials to the perpendicular wires, calculate stored electrostatic energy, and obtain their mutual capacitance from C = 2W/U^2.
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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