The LF time domain solver can be used to carry out the magnetoquasistatic time domain simulations.
The following source types are available:
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Current coils with constant profile can be defined via a path curve and a profile curve that is swept along the path. A peak current or voltage value corresponding to one turn as well as the total number of turns and the Ohmic resistance can be specified. The source value multiplied by the signal value (assigned in the solver excitation dialog) defines the value of the excitation at each time step. The phase value will be ignored by the time domain solver. |
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In magnetoquasistatic problems, closed and non-closed current paths find application to simulate the idealization of a thin conductor with given current. A non-closed current path can be used to prescribe the total current in a touching massive conductor. To create a current path an appropriate curve path has to be defined before. A coil segment definition consists of a path- and a profile-curve. Phase values will be ignored by the time domain solver. The source value multiplied by the signal value (assigned in the solver excitation dialog) defines the value of the excitation at each time step. In order to define a solvable magnetoquasistatic problem each connected set of current paths and conductive domains must form a closed circuit. In particular a current paths must not start or end in insulating material. |
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In magnetoquasistatic problems, voltage paths find application to simulate the idealization of a thin conductor with given current. A voltage path must not be closed. To create a voltage path an appropriate curve path has to be defined before. Phase values will be ignored by the time domain solver. The source value multiplied by the signal value (assigned in the solver excitation dialog) defines the value of the excitation at each time step. In order to define a solvable magnetoquasistatic problem each connected set of voltage paths and conductive domains must form a closed circuit. In particular a voltage paths must not start or end in insulating material. |
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Permanent magnets can be defined on solids with Normal material properties. There are two magnetization types available. The constant type allows for the specification of a magnetization axis. The remanence flux density value corresponds to the norm of the specified magnetization vector. The eventually computed vector field will point into the direction of this vector. For the radial type a local cylindric coordinate system has to be specified via the location of its local z-axis and origin. The corresponding magnetic field will then be circularly symmetric with respect to that origin and orthogonal to the local z-axis. The remanence flux density has to be prescribed separately for radial magnets. |
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See also
LF Time Domain Solver Overview
