File braginskii_conduction.hxx

File braginskii_conduction.hxx#

Defines

BRAGINSKII_CONDUCTION_H#
struct BraginskiiConduction : public Component#
#include <braginskii_conduction.hxx>

Calculates parallel heat conduction due to collisions

NOTE: This is global as that is the only way to ensure it gets run after all collisions have been calculated. Logically this should really apply species-by-species, but we can’t do that until we have dynamic ordering to make sure collision rates get calculated first.

Public Functions

BraginskiiConduction(const std::string &name, Options &alloptions, Solver*)#

Inputs

  • <component name>

    • diagnose Output additional diagnostic fields?

    • kappa_coefficient Heat conduction constant. Default is 3.16 for electrons, 3.9 otherwise

    • kappa_limit_alpha Flux limiter, off by default.

    • conduction_collisions_mode Can be multispecies: all collisions, or braginskii: self collisions and ie

  • <species name>

    • type Checks whether energy or pressure are evolved

    • thermal_conduction Include parallel heat conduction? Default is true

virtual void outputVars(Options &state) override#

Add extra fields for output, or set attributes e.g docstrings.

Private Functions

virtual void transform_impl(GuardedOptions &state) override#

Calculate conduction of energy for each species where this has been turned on.

Uses

  • species

    • <name>

      • AA

      • collision_frequencies

      • density

      • temperature

      • pressure

Modifies

  • species

    • <name>

      • energy_source Conduction contribution to energy evolution

      • kappa_par The parallel heat conduction coefficient

      • energy_flow_ylow Energy flow diagnostics.

Private Members

std::map<std::string, Field3D> all_nu#

Collision frequency for conduction.

std::map<std::string, Field3D> all_kappa_par#

Parallel heat conduction coefficient.

std::map<std::string, std::string> all_conduction_collisions_mode#

Collision selection, either multispecies or braginskii

std::map<std::string, std::vector<std::string>> all_collision_names#

Collisions used for collisionality.

std::map<std::string, BoutReal> all_kappa_coefficient#

Leading numerical coefficient in parallel heat flux calculation

std::map<std::string, BoutReal> all_kappa_limit_alpha#

Flux limit if >0.

std::map<std::string, Field3D> all_flow_ylow_conduction#

Conduction energy flow diagnostics

std::map<std::string, bool> all_diagnose#

Save more diagnostics?