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126 | // *****************************************************************************
/*!
\file src/PDE/EoS/EOS.hpp
\copyright 2012-2015 J. Bakosi,
2016-2018 Los Alamos National Security, LLC.,
2019-2021 Triad National Security, LLC.
All rights reserved. See the LICENSE file for details.
\brief Polymorphic variant-style implementation for equations of state,
where children implement specific EOS functions.
*/
// *****************************************************************************
#ifndef EOS_h
#define EOS_h
#include <variant>
#include "PUPUtil.hpp"
#include "Inciter/Options/Material.hpp"
#include "EoS/StiffenedGas.hpp"
#include "EoS/JWL.hpp"
#include "EoS/SmallShearSolid.hpp"
namespace inciter {
//! Equation types
enum class EqType : uint8_t { compflow
, multimat
};
//! Base class for generic forwarding interface to eos types
class EOS {
private:
//! Variant type listing all eos types modeling the same concept
std::variant< StiffenedGas
, JWL
, SmallShearSolid
> m_material;
public:
//! Empty constructor for Charm++
explicit EOS() {}
//! Constructor
explicit EOS( ctr::MaterialType mattype, EqType eq, std::size_t k );
//! Entry method tags for specific EOS classes to use with compute()
struct density {};
struct pressure {};
struct soundspeed {};
struct totalenergy {};
struct temperature {};
struct min_eff_pressure {};
struct refDensity {};
struct refPressure {};
//! Call EOS function
//! \tparam Fn Function tag identifying the function to call
//! \tparam Args Types of arguments to pass to function
//! \param[in] args Arguments to member function to be called
//! \details This function issues a call to a member function of the
//! EOS vector and is thus equivalent to mat_blk[imat].Fn(...).
template< typename Fn, typename... Args >
tk::real compute( Args&&... args ) const {
return std::visit( [&]( const auto& m )-> tk::real {
if constexpr( std::is_same_v< Fn, density > )
return m.density( std::forward< Args >( args )... );
else if constexpr( std::is_same_v< Fn, pressure > )
return m.pressure( std::forward< Args >( args )... );
else if constexpr( std::is_same_v< Fn, soundspeed > )
return m.soundspeed( std::forward< Args >( args )... );
else if constexpr( std::is_same_v< Fn, totalenergy > )
return m.totalenergy( std::forward< Args >( args )... );
else if constexpr( std::is_same_v< Fn, temperature > )
return m.temperature( std::forward< Args >( args )... );
else if constexpr( std::is_same_v< Fn, min_eff_pressure > )
return m.min_eff_pressure( std::forward< Args >( args )... );
else if constexpr( std::is_same_v< Fn, refDensity > )
return m.refDensity( std::forward< Args >( args )... );
else if constexpr( std::is_same_v< Fn, refPressure > )
return m.refPressure( std::forward< Args >( args )... );
}, m_material );
}
//! Entry method tags for specific EOS classes to use with computeTensor()
struct CauchyStress {};
//! Call EOS function returning a tensor
//! \tparam Fn Function tag identifying the function to call
//! \tparam Args Types of arguments to pass to function
//! \param[in] args Arguments to member function to be called
//! \details This function issues a call to a member function of the
//! EOS vector and is thus equivalent to mat_blk[imat].Fn(...).
template< typename Fn, typename... Args >
std::array< std::array< tk::real, 3 >, 3 > computeTensor( Args&&... args )
const {
return std::visit( [&]( const auto& m )->
std::array< std::array< tk::real, 3 >, 3 > {
if constexpr( std::is_same_v< Fn, CauchyStress > )
return m.CauchyStress( std::forward< Args >( args )... );
}, m_material );
}
/** @name Charm++ pack/unpack serializer member functions */
///@{
//! \brief Pack/Unpack serialize member function
//! \param[in,out] p Charm++'s PUP::er serializer object reference
void pup( PUP::er &p ) {<--- Parameter 'p' can be declared with const
p | m_material;
}
//! \brief Pack/Unpack serialize operator|
//! \param[in,out] p Charm++'s PUP::er serializer object reference
//! \param[in,out] s EOS object reference
friend void operator|( PUP::er& p, EOS& s ) { s.pup(p); }
//@}
};
} // inciter::
#endif // EOS_h
|