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PISM, A Parallel Ice Sheet Model 2.2.2-d6b3a29ca committed by Constantine Khrulev on 2025-03-28
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Hooke.cc
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1/* Copyright (C) 2015, 2016, 2017, 2023 PISM Authors
2 *
3 * This file is part of PISM.
4 *
5 * PISM is free software; you can redistribute it and/or modify it under the
6 * terms of the GNU General Public License as published by the Free Software
7 * Foundation; either version 3 of the License, or (at your option) any later
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17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#include <cmath>
21
22#include "pism/rheology/Hooke.hh"
23#include "pism/util/ConfigInterface.hh"
24
25namespace pism {
26namespace rheology {
27
28// Hooke
29
30Hooke::Hooke(const std::string &prefix,
31 const Config &config, EnthalpyConverter::Ptr ec)
32 : PatersonBudd(prefix, config, ec) {
33 m_name = "Hooke";
34
35 m_Q_Hooke = config.get_number("flow_law.Hooke.Q");
36 m_A_Hooke = config.get_number("flow_law.Hooke.A");
37 m_C_Hooke = config.get_number("flow_law.Hooke.C");
38 m_K_Hooke = config.get_number("flow_law.Hooke.k");
39 m_Tr_Hooke = config.get_number("flow_law.Hooke.Tr");
40}
41
42double Hooke::softness_from_temp(double T_pa) const {
43 return m_A_Hooke * exp(-m_Q_Hooke/(m_ideal_gas_constant * T_pa)
44 + 3.0 * m_C_Hooke * pow(m_Tr_Hooke - T_pa, -m_K_Hooke));
45}
46
47} // end of namespace rheology
48} // end of namespace pism
double get_number(const std::string &name, UseFlag flag=REMEMBER_THIS_USE) const
A class for storing and accessing PISM configuration flags and parameters.
std::shared_ptr< EnthalpyConverter > Ptr
double m_ideal_gas_constant
ideal gas constant
Definition FlowLaw.hh:152
virtual double softness_from_temp(double T_pa) const
Definition Hooke.cc:42
Hooke(const std::string &prefix, const Config &config, EnthalpyConverter::Ptr EC)
Definition Hooke.cc:30
Derived class of FlowLaw for Paterson-Budd (1982)-Glen ice.