• Electro-magnetics

• Calculation of the magnetic field in the teeth, slots and the air gap of an electric generator

    Calculation of the magnetic field in the teeth, slots and the air gap of an electric generator. The curvature effect    
    of  the teeth and slots can be neglected and the slots are assumed a rectangular. Only a half of the slot width is   
    taken as the computational domain. The magnetic conduction rate  is assumed linear. The vector magnetic 
    potential  as  the unknown function to be solved satisfies the Laplace equation:

    
   The boundary conditions include: 
                     
      on the upper and the lower sides

                     
     (n is the outward normal of the boundary)

                         
                           A=0       on the left side (symmetric boundary)

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