inline Real OneDFSIPhysics::viscoelasticPressure( const Real& A, const Real& timeStep, const UInt& iNode, const bool& elasticExternalNodes ) const { if ( !M_dataPtr->viscoelasticWall() || ( ( iNode == 0 || iNode == M_dataPtr->numberOfNodes() - 1 ) && elasticExternalNodes ) ) return 0; else return M_dataPtr->viscoelasticCoefficient( iNode ) / ( A * std::sqrt( A ) ) * dAdt( A, timeStep, iNode ); }