Periodic problem

[Bourriche Lahoussaine]

Hy;

For periodic condition i do something like :

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ConstraintMatrix = gf.Spmat('empty',1 ,mfu.nb_basic_dof())
L=np.zeros((mfu.nb_basic_dof(),1))
   
for i in range(len(leftDof)):
      ConstraintMatrix[0,leftDof[i]]=1
      ConstraintMatrix[0,rightDof[i]]=1
      md.add_variable('mult_spec'+str(i),1)
      # print(i)
      md.add_constraint_with_multipliers( 'u','mult_spec'+str(i), ConstraintMatrix,0)

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And it worked perfectly;

Now i want to add another periodic condition: this new on derivatives 

The derivative of u in leftDof  must equal the derivative of T in rightDOF

Do you have ideas

Best regards

Lahoussaine