timflow.steady.linedoublet.ImpermeableWallString.equation
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.. py:method:: timflow.steady.linedoublet.ImpermeableWallString.equation()

   
   Mix-in class that returns matrix rows for zero normal flux conditions.

   :returns: * *matrix* -- (nunknowns,neq)
             * *rhs* -- (nunknowns)















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