Calculated physical quantities in DC conduction

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For problems of DC conduction, the QuickField postprocessor calculates the following set of local and integral physical quantities.

Local quantities:

• Scalar electric potential U;
• Vector of electric field intensity E = –gradU

  Planar case: \[ E_x = -\frac{\partial U}{\partial x}, \quad E_y = -\frac{\partial U}{\partial y} \]

  Axisymmetric case: \[ E_z = -\frac{\partial U}{\partial z}, \quad E_r = -\frac{\partial U}{\partial r} \]

• Vector of current density \[ \mathbf j = σ · \mathbf E , \] where σ is electric conductivity tensor.

Integral quantities:

See section Integral quantities in DC conduction.