{"id":161855,"date":"2021-09-02T08:45:08","date_gmt":"2021-09-02T08:45:08","guid":{"rendered":"\/forum\/forums\/topic\/conflicting-results-in-transient-analysis\/"},"modified":"2021-09-23T18:06:22","modified_gmt":"2021-09-23T18:06:22","slug":"conflicting-results-in-transient-analysis","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/conflicting-results-in-transient-analysis\/","title":{"rendered":"Conflicting results in Transient analysis"},"content":{"rendered":"
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A coul and magnet are modelled the same as transient translational motion problem 7.3 v15. One model has a north facing pole and another model has a south facing pole. The coil has a terminal and the excitation is an external with a winding, resistor and earth. When modelled with the coil terminal current in the same direction as the current density it is noted that the phase relationship between current and induced voltage is 180° out of phase with the north facing magnet and in phase with the south facing magnet. According to the Curl rule then the current and current density are defined. Initially the magnet is approaching the coil. In the case of the north or south facing magnet an induced current is created causing the magnetic field in opposition to the approaching magnet. In the expected result we would find that phase relationship between induced voltage and current according to Maxwell's law would be 180° out and in relationship to Lenz's law it would be in phase. We cannot find any indications as to whether Maxwell or Lenz's law is used to determine the induced voltage and we take it that J is conventional current which is the movement of the positive charge carriers. Because of the results of the north and south approaching magnet being different we cannot determine any further. Please provide assistance. You could inform us that:<\/p>\n

1) J is positive charge carriers or negative<\/p>\n

2) Whether the induced current uses Lenz's law or not<\/p>\n

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