#include <FlowLaw.hh>
Inheritance diagram for pism::rheology::FlowLaw:Public Member Functions | |
| FlowLaw (const std::string &prefix, const Config &config, EnthalpyConverter::Ptr EC) | |
| virtual | ~FlowLaw ()=default |
| void | effective_viscosity (double hardness, double gamma, double *nu, double *dnu) const |
| Computes the regularized effective viscosity and its derivative with respect to the second invariant \( \gamma \). More... | |
| void | effective_viscosity (double hardness, double gamma, double eps, double *nu, double *dnu) const |
| std::string | name () const |
| double | exponent () const |
| EnthalpyConverter::Ptr | EC () const |
| double | hardness (double E, double p) const |
| void | hardness_n (const double *enthalpy, const double *pressure, unsigned int n, double *result) const |
| double | softness (double E, double p) const |
| double | flow (double stress, double enthalpy, double pressure, double grain_size) const |
| The flow law itself. More... | |
| void | flow_n (const double *stress, const double *E, const double *pressure, const double *grainsize, unsigned int n, double *result) const |
Protected Member Functions | |
| virtual double | flow_impl (double stress, double E, double pressure, double grainsize) const |
| virtual void | flow_n_impl (const double *stress, const double *E, const double *pressure, const double *grainsize, unsigned int n, double *result) const |
| virtual double | hardness_impl (double E, double p) const |
| virtual void | hardness_n_impl (const double *enthalpy, const double *pressure, unsigned int n, double *result) const |
| virtual double | softness_impl (double E, double p) const =0 |
| double | softness_paterson_budd (double T_pa) const |
| Return the softness parameter A(T) for a given temperature T. More... | |
Protected Attributes | |
| std::string | m_name |
| double | m_rho |
| ice density More... | |
| double | m_beta_CC_grad |
| Clausius-Clapeyron gradient. More... | |
| double | m_melting_point_temp |
| melting point temperature (for water, 273.15 K) More... | |
| EnthalpyConverter::Ptr | m_EC |
| double | m_schoofReg |
| regularization parameter for \( \gamma \) More... | |
| double | m_viscosity_power |
| \( (1 - n) / (2n) \); used to compute viscosity More... | |
| double | m_hardness_power |
| \( - 1 / n \); used to compute hardness More... | |
| double | m_A_cold |
| Paterson-Budd softness, cold case. More... | |
| double | m_A_warm |
| Paterson-Budd softness, warm case. More... | |
| double | m_Q_cold |
| Activation energy, cold case. More... | |
| double | m_Q_warm |
| Activation energy, warm case. More... | |
| double | m_crit_temp |
| critical temperature (cold – warm transition) More... | |
| double | m_standard_gravity |
| acceleration due to gravity More... | |
| double | m_ideal_gas_constant |
| ideal gas constant More... | |
| double | m_n |
| power law exponent More... | |
Detailed Description
Abstract class containing the constitutive relation for the flow of ice (of the Paterson-Budd type).
This is the interface which most of PISM uses for rheology.
The current implementation of stress-balance computations in PISM restrict possible choices of rheologies to ones that
- are power laws
- allow factoring out a temperature- (or enthalpy-) dependent ice hardness factor
- can be represented in the viscosity form
- Note
- FlowLaw derived classes should implement hardness() in terms of softness(). That way in many cases we only need to re-implement softness... to turn one flow law into another.
Definition at line 77 of file FlowLaw.hh.
The documentation for this class was generated from the following files:
- src/rheology/FlowLaw.hh
- src/rheology/FlowLaw.cc
