Winding modeling
The winding can be modeled as separate loops, with the same material properties, marked by the same label. The source and conductors connection scheme should be specified in the block label properties dialog.
 
This approach can be used for the simulation of winding with small number of turns. Multiturn windings simulated with separate loops require too much computation time and unpractical. Multi-turn windings are often simulated by one loop with large cross-section and uniformly distributed current density instead of simulating all individual wire cross-sections.
 
The magnetic filed will be the same. See how the winding modeled in Solenoid actuator example.
Note: you cannot use this approach if you want to calculate the induced voltage in the winding. Inductance in such cases may be calculated using the energy approach.
Additional links on this subject:
Coil from Wikipedia, the free encyclopedia.
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