Line data    Source code

       1           0 : // Distributed under the MIT License.
       2             : // See LICENSE.txt for details.
       3             : 
       4             : #pragma once
       5             : 
       6             : #include <ostream>
       7             : 
       8             : /// \cond
       9             : namespace Options {
      10             : class Option;
      11             : template <typename T>
      12             : struct create_from_yaml;
      13             : }  // namespace Options
      14             : /// \endcond
      15             : 
      16             : namespace NewtonianEuler {
      17             : namespace Limiters {
      18             : /// \ingroup LimitersGroup
      19             : /// \brief Type of NewtonianEuler variables to apply limiter to
      20             : ///
      21             : /// \note The option `Characteristic` denotes the characteristic fields computed
      22             : /// from the analytic expression, whereas the option `NumericalCharacteristic`
      23             : /// denotes the fields as computed numerically by solving for the eigenvectors
      24             : /// of the flux Jacobian.
      25             : ///
      26             : /// Initial experiments with limiting in a Reimann problem by FH suggest the
      27             : /// numerical eigenvectors can sometimes produce more accurate results than the
      28             : /// analytic ones (does the numerical solution give a better linear combination
      29             : /// of the degenerate eigenvectors?), and is not too much more expensive
      30             : /// (probably the expense of the limiter as a whole dominates). More testing is
      31             : /// needed to verify and understand this...
      32           0 : enum class VariablesToLimit {
      33             :   Conserved,
      34             :   Characteristic,
      35             :   NumericalCharacteristic
      36             : };
      37             : 
      38           0 : std::ostream& operator<<(std::ostream& os, VariablesToLimit vars_to_limit);
      39             : }  // namespace Limiters
      40             : }  // namespace NewtonianEuler
      41             : 
      42             : template <>
      43           0 : struct Options::create_from_yaml<NewtonianEuler::Limiters::VariablesToLimit> {
      44             :   template <typename Metavariables>
      45           0 :   static NewtonianEuler::Limiters::VariablesToLimit create(
      46             :       const Options::Option& options) {
      47             :     return create<void>(options);
      48             :   }
      49             : };
      50             : 
      51             : template <>
      52           0 : NewtonianEuler::Limiters::VariablesToLimit
      53             : Options::create_from_yaml<NewtonianEuler::Limiters::VariablesToLimit>::create<
      54             :     void>(const Options::Option& options);