cache_inputs cache_residual_cfbc compute_local_function compute_local_jacobian driving_stress explicit_driving_stress function_callback init_impl jacobian_callback m_alpha m_bc_mask m_bc_values m_beta_ice_free_bedrock m_boundary_integral m_callback_data m_coefficients m_dirichletScale m_driving_stress_x m_driving_stress_y m_element_index m_epsilon_ssa m_gc m_node_type m_q1_element m_rho_g m_snes monitor_function monitor_jacobian PointwiseNuHAndBeta quad_point_values solve solve_nocache solve_with_reason SSAFEM ~SSAFEM

PointwiseNuHAndBeta() void pism::stressbalance::SSAFEM::PointwiseNuHAndBeta ( double  thickness, double  hardness, int  mask, double  tauc, const Vector2d &  U, const Vector2d &  U_x, const Vector2d &  U_y, double *  nuH, double *  dnuH, double *  beta, double *  dbeta  ) protected Compute the "(regularized effective viscosity) x (ice thickness)" and effective viscous bed strength from the current solution, at a single quadrature point. Parameters [in] thickness ice thickness [in] hardness ice hardness [in] mask cell type mask [in] tauc basal yield stress [in] U the value of the solution [in] U_x x-derivatives of velocity components [in] U_y y-derivatives of velocity components [out] nuH product of the ice viscosity and thickness \( \nu H \) [out] dnuH derivative of \( \nu H \) with respect to the second invariant \( \gamma \). Set to NULL if not desired. [out] beta basal drag coefficient \( \beta \) [out] dbeta derivative of \( \beta \) with respect to the second invariant \( \gamma \). Set to NULL if not desired. Definition at line 505 of file SSAFEM.cc. References pism::IceBasalResistancePlasticLaw::drag_with_derivative(), pism::stressbalance::SSAStrengthExtension::get_notional_strength(), pism::mask::grounded_ice(), pism::mask::ice_free_land(), pism::stressbalance::ShallowStressBalance::m_basal_sliding_law, m_beta_ice_free_bedrock, m_epsilon_ssa, pism::stressbalance::ShallowStressBalance::m_flow_law, pism::secondInvariant_2D(), pism::stressbalance::SSA::strength_extension, pism::Vector2d::u, and pism::Vector2d::v. Referenced by compute_local_function(), and compute_local_jacobian().