WEBVTT - Eddy currents simulation with QuickField 00:00.000 --> 00:02.000 Hello everybody and welcome to our webinar. 00:02.000 --> 00:08.000 Today we discuss how to use QuickField for applications which require Eddy Current analysis. 00:08.000 --> 00:15.000 Speaking in layman's terms systems usually prefer to stay in stable position. 00:15.000 --> 00:20.000 If something changes – there is often opposing effect which keeps the things the way they were. 00:20.000 --> 00:28.000 In mechanics objects maintain their constant speed and it is required to apply some force to change it. It is called Newton's first law 00:28.000 --> 00:40.000 In electromagnetics – magnetic field changes causes the electric fields, which in conductive media lead to electric currents which generate the magnetic fields opposing the source field changes. 00:40.000 --> 00:43.000 This is called Faraday's law of induction. 00:43.000 --> 00:51.000 Induced currents form loops, similar to localized areas of turbulence in water which are called eddies. 00:51.000 --> 01:00.000 This is the origin of the term Eddie Currents – electric currents in conductive media caused by the changes in the external magnetic field. 01:00.000 --> 01:05.000 Eddie currents are subjects to all laws and effects of other types of electric currents. 01:05.000 --> 01:16.000 According to Ohm's law they are higher when the electrical conductivity is high, or lower when special measures increase the material resistivity. 01:16.000 --> 01:21.000 They cause Joule heat. They interact mechanically due to magnetic forces. 01:21.000 --> 01:33.000 And they may negatively affect performance of the electromagnetic devices because of the increased losses – or contrary, be the main principle of device operation, like in the induction pumps. 01:33.000 --> 01:38.000 Eddie currents are the main reason of such phenomena as skin and proximity effects. 01:39.000 --> 01:43.000 QuickField software includes tools for Eddie Current analysis and their effects. 01:43.000 --> 01:46.000 But first let me remind you what is QuickField. 01:48.000 --> 01:59.000 QuickField is a FEA software for electromagnetic, thermal and stress analysis. It includes set of analysis modules. 02:00.000 --> 02:09.000 Magnetic problems may be analyzed in Magnetostatics, AC magnetics or Transient magnetic formulations 02:09.000 --> 02:19.000 Electric problems, that you choose from Electrostatics, DC Conduction, AC Conduction and Transient Electric field analysis. 02:19.000 --> 02:27.000 And Thermostructural suit inlcudes Steady-State heat transfer, Transient heat transfer and Stress analysis. 02:27.000 --> 02:35.000 Specifically Eddy Currents may be simulated in AC or Transient Magnetic formulations. 02:35.000 --> 02:47.000 But then you may need to see the temperature distribution due to Eddy Current losses, or mechanical effects due to Eddy Current magnetic interaction – and this is possible due to multiphysics coupling. 02:47.000 --> 02:55.000 QuickField allows importing the results of one type of analysis to other problems as field sources or media properties. 02:55.000 --> 03:04.000 You may bring the losses distribution calculated in electromagnetic study to thermal analysis. Or import electromagnetic forces to mechanical problem. 03:04.000 --> 03:09.000 Full list of possible coupling options is shown in this table. 03:09.000 --> 03:18.000 Left column represent Source problems, upper row - Destination problems, and table cells – all possible ways to automatically connect them 03:18.000 --> 03:29.000 Other important feature of QuickField – possibility to expand the core functionality by using the external programs which directly interact with QuickField core functions and data structures. 03:29.000 --> 03:40.000 This way you may develop external scripts in MATLAB or Microsoft Office to automate repetitive tasks, or include QuickField model into the loop of automatic control. 03:40.000 --> 03:45.000 Open object-oriented API is fully described and supported 03:46.000 --> 03:52.000 But you should not think of QuickField as a very sophisticated and complicated tool. 03:52.000 --> 03:55.000 On the contrary, QuickField is extremely simple to use. 03:55.000 --> 04:00.000 Unlike other FEA programs it does not require dedicated training. 04:00.000 --> 04:08.000 All actions in QuickField are intuitive, its workflow is straightforward, and most of operations are automated. 04:08.000 --> 04:15.000 My colleague Alex will prove it in his presentations of examples, related to Eddie Current analysis with QuickField.