ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number > Class Template Reference

#include <source/euler/initial_state_exact_riemann_solution.h>

Inheritance diagram for ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >:

Collaboration diagram for ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >:

Typedefs and constexpr constants
using	HyperbolicSystem = typename Description::HyperbolicSystem
using	View = typename HyperbolicSystem::template View< dim, Number >
using	state_type = typename View::state_type
using	ScalarNumber = typename View::ScalarNumber
using	RiemannSolver = EulerAEOS::NASGRiemannSolver< ScalarNumber, riemann_solver_options >
using	RiemannSolverView = EulerAEOS::NASGRiemannSolverView< Number, riemann_solver_options >
using	primitive_type = typename RiemannSolverView::primitive_type
static constexpr EulerAEOS::NASGRiemannSolverOptions	riemann_solver_options
	ExactRiemannSolution (const HyperbolicSystem &hyperbolic_system, const std::string subsection)
state_type	compute (const dealii::Point< dim > &point, Number t) final

Additional Inherited Members
Public Types inherited from ryujin::InitialState< Description, dim, Number >
using	HyperbolicSystem = typename HyperbolicDescription::HyperbolicSystem
using	View = typename HyperbolicSystem::template View< dim, Number >
using	state_type = typename View::state_type
using	initial_precomputed_type = typename View::initial_precomputed_type
Public Member Functions inherited from ryujin::InitialState< Description, dim, Number >
	InitialState (const std::string &name, const std::string &subsection)
virtual initial_precomputed_type	initial_precomputations (const dealii::Point< dim > &)
const auto &	name () const

Detailed Description

template<typename Description, int dim, typename Number>
class ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >

The exact Riemann solution.

This initial state class computes the analytic (self-similar) solution of the 1D Riemann problem for the compressible Euler equations with a Noble-Abel-Stiffened Gas equation of state with the help of EulerAEOS::NASGRiemannSolver, see [2] and [16]. The covolume b and reference pressure pinf are taken from the equation of state of the hyperbolic system (if available), otherwise a polytropic gas equation of state is assumed.

Note

This class returns the analytic solution as a function of time t and position x.

If the hyperbolic system does not provide gamma (for example, EulerAEOS), the "gamma" parameter of this class must coincide with the gamma of the equation of state. Similarly, the equation of state should be a Noble-Abel-Stiffened Gas EOS. Neither condition is checked: with a mismatched gamma or a different equation of state, the returned solution will not be an exact solution of the hyperbolic system.

Definition at line 47 of file initial_state_exact_riemann_solution.h.

Member Typedef Documentation

HyperbolicSystem

template<typename Description , int dim, typename Number >

using ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >::HyperbolicSystem = typename Description::HyperbolicSystem

Definition at line 55 of file initial_state_exact_riemann_solution.h.

View

template<typename Description , int dim, typename Number >

using ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >::View = typename HyperbolicSystem::template View<dim, Number>

Definition at line 56 of file initial_state_exact_riemann_solution.h.

state_type

template<typename Description , int dim, typename Number >

using ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >::state_type = typename View::state_type

Definition at line 57 of file initial_state_exact_riemann_solution.h.

ScalarNumber

template<typename Description , int dim, typename Number >

using ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >::ScalarNumber = typename View::ScalarNumber

Definition at line 59 of file initial_state_exact_riemann_solution.h.

RiemannSolver

template<typename Description , int dim, typename Number >

using ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >::RiemannSolver = EulerAEOS::NASGRiemannSolver<ScalarNumber, riemann_solver_options>

Definition at line 73 of file initial_state_exact_riemann_solution.h.

RiemannSolverView

template<typename Description , int dim, typename Number >

using ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >::RiemannSolverView = EulerAEOS::NASGRiemannSolverView<Number, riemann_solver_options>

Definition at line 75 of file initial_state_exact_riemann_solution.h.

primitive_type

template<typename Description , int dim, typename Number >

using ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >::primitive_type = typename RiemannSolverView::primitive_type

Definition at line 77 of file initial_state_exact_riemann_solution.h.

Constructor & Destructor Documentation

ExactRiemannSolution()

template<typename Description , int dim, typename Number >

ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >::ExactRiemannSolution ( const HyperbolicSystem &  hyperbolic_system, const std::string  subsection  )

inline

Definition at line 80 of file initial_state_exact_riemann_solution.h.

References ryujin::EulerAEOS::NASGRiemannSolver< ScalarNumber, options >::set_equation_of_state(), and ryujin::EulerAEOS::NASGRiemannSolver< ScalarNumber, options >::set_gamma().

Member Function Documentation

compute()

template<typename Description , int dim, typename Number >

state_type ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >::compute ( const dealii::Point< dim > &  point, Number  t  )

inlinefinalvirtual

Given a position point returns the corresponding (conserved) initial state. The function is used to interpolate initial values and enforce Dirichlet boundary conditions. For the latter, the function signature has an additional parameter t denoting the current time to allow for time-dependent (in-flow) Dirichlet data.

Implements ryujin::InitialState< Description, dim, Number >.

Definition at line 140 of file initial_state_exact_riemann_solution.h.

Member Data Documentation

riemann_solver_options

template<typename Description , int dim, typename Number >

constexpr EulerAEOS::NASGRiemannSolverOptions ryujin::EulerInitialStates::ExactRiemannSolution< Description, dim, Number >::riemann_solver_options

staticconstexpr

Initial value:

{.covolume = View::have_covolume_constant,
                                 .pinf = View::have_covolume_constant,
                                 .safe_division = true,
                                 .variable_gamma = false}

Compile time options of the Riemann solver: a single, constant gamma, and covolume and reference pressure only if provided by the hyperbolic system. safe_division is enabled so that the solution remains well defined if a vacuum is formed.

Definition at line 68 of file initial_state_exact_riemann_solution.h.

---

The documentation for this class was generated from the following file:

• source/euler/initial_state_exact_riemann_solution.h