:orphan:

.. admonition:: Work in Progress
   :class: warning

   This document is still under development and may change frequently.

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Displacement Field Condition
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   :caption: Displacement Field Condition

The displacement field condition sets a specific value of the electric displacement field :math:`\mathbf{D}=\varepsilon\mathbf{E}` at the selected boundary:

.. math::
   \left. \mathbf{D} \right|_{\partial\Omega} = \mathbf{D}_0 \cdot \hat{\mathbf{n}},

where :math:`\partial\Omega` is the given boundary with the unit normal :math:`\hat{\mathbf{n}}` and :math:`\mathbf{D}_0` is the desired value of the displacement field.