timflow.transient.linesink.DitchString2.equation
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.. py:method:: timflow.transient.linesink.DitchString2.equation()

   
   Matrix rows for multi-screen conditions where total discharge is specified.

   Returns matrix part nunknowns,neq,npval, complex.
   Returns rhs part nunknowns,nvbc,npval, complex
   head_out - c*q_s = h_in
   Set h_i - h_(i+1) = 0 and Sum Q_i = Q
   I would say
   headin_i - headin_(i+1) = 0
   headout_i - c*qs_i - headout_(i+1) + c*qs_(i+1) = 0
   In case of storage:
   Sum Q_i - A * p^2 * headin = Q















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