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GridFire v0.7.1_rc2
General Purpose Nuclear Network
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An engine view that dynamically adapts the reaction network based on runtime conditions. More...
#include <engine_adaptive.h>
Classes | |
| struct | ReactionFlow |
| A struct to hold a reaction and its flow rate. More... | |
Public Member Functions | |
| AdaptiveEngineView (DynamicEngine &baseEngine) | |
| Constructs an AdaptiveEngineView. | |
| fourdst::composition::Composition | update (const NetIn &netIn) override |
| Updates the active species and reactions based on the current conditions. | |
| bool | isStale (const NetIn &netIn) override |
| Check if the engine's internal state is stale. | |
| const std::vector< fourdst::atomic::Species > & | getNetworkSpecies () const override |
| Gets the list of active species in the network. | |
| std::expected< StepDerivatives< double >, engine::EngineStatus > | calculateRHSAndEnergy (const fourdst::composition::CompositionAbstract &comp, double T9, double rho) const override |
| Calculates the right-hand side (dY/dt) and energy generation for the active species. | |
| EnergyDerivatives | calculateEpsDerivatives (const fourdst::composition::CompositionAbstract &comp, double T9, double rho) const override |
| NetworkJacobian | generateJacobianMatrix (const fourdst::composition::CompositionAbstract &comp, double T9, double rho) const override |
| Generates the Jacobian matrix for the active species. | |
| NetworkJacobian | generateJacobianMatrix (const fourdst::composition::CompositionAbstract &comp, double T9, double rho, const std::vector< fourdst::atomic::Species > &activeSpecies) const override |
| Generates the Jacobian matrix for some set of active species such that that set is a subset of the active species in the view. | |
| NetworkJacobian | generateJacobianMatrix (const fourdst::composition::CompositionAbstract &comp, double T9, double rho, const SparsityPattern &sparsityPattern) const override |
| Generates the Jacobian matrix for the active species with a given sparsity pattern. | |
| void | generateStoichiometryMatrix () override |
| Generates the stoichiometry matrix for the active reactions and species. | |
| int | getStoichiometryMatrixEntry (const fourdst::atomic::Species &species, const reaction::Reaction &reaction) const override |
| Gets an entry from the stoichiometry matrix for the active species and reactions. | |
| double | calculateMolarReactionFlow (const reaction::Reaction &reaction, const fourdst::composition::CompositionAbstract &comp, double T9, double rho) const override |
| Calculates the molar reaction flow for a given reaction in the active network. | |
| const reaction::ReactionSet & | getNetworkReactions () const override |
| Gets the set of active logical reactions in the network. | |
| void | setNetworkReactions (const reaction::ReactionSet &reactions) override |
| Sets the reaction set for the base engine. | |
| std::expected< std::unordered_map< fourdst::atomic::Species, double >, EngineStatus > | getSpeciesTimescales (const fourdst::composition::CompositionAbstract &comp, double T9, double rho) const override |
| Computes timescales for all active species in the network. | |
| std::expected< std::unordered_map< fourdst::atomic::Species, double >, EngineStatus > | getSpeciesDestructionTimescales (const fourdst::composition::CompositionAbstract &comp, double T9, double rho) const override |
| Computes destruction timescales for all active species in the network. | |
| const DynamicEngine & | getBaseEngine () const override |
| Gets the base engine. | |
| void | setScreeningModel (screening::ScreeningType model) override |
| Sets the screening model for the base engine. | |
| screening::ScreeningType | getScreeningModel () const override |
| Gets the screening model from the base engine. | |
| size_t | getSpeciesIndex (const fourdst::atomic::Species &species) const override |
| Gets the index of a species in the active species list. | |
| std::vector< double > | mapNetInToMolarAbundanceVector (const NetIn &netIn) const override |
| Maps the molar abundance vector from the active species to the full network species. | |
| PrimingReport | primeEngine (const NetIn &netIn) override |
| Primes the engine with the given network input. | |
| fourdst::composition::Composition | collectComposition (const fourdst::composition::CompositionAbstract &comp, double T9, double rho) const override |
| Collect the composition of the base engine, ensure all active species are registered, and pass the composition back to the caller. | |
| SpeciesStatus | getSpeciesStatus (const fourdst::atomic::Species &species) const override |
| Gets the status of a species in the network. | |
Public Member Functions inherited from gridfire::engine::DynamicEngine | |
| virtual BuildDepthType | getDepth () const |
| Get the depth of the network. | |
| virtual void | rebuild (const fourdst::composition::CompositionAbstract &comp, BuildDepthType depth) |
| Rebuild the network with a specified depth. | |
Public Member Functions inherited from gridfire::engine::Engine | |
| virtual | ~Engine ()=default |
| Virtual destructor. | |
Public Member Functions inherited from gridfire::engine::EngineView< DynamicEngine > | |
| virtual | ~EngineView ()=default |
| Virtual destructor. | |
Private Types | |
| using | Config = fourdst::config::Config |
| using | LogManager = fourdst::logging::LogManager |
| typedef std::pair< std::unordered_set< const reaction::Reaction * >, std::unordered_set< fourdst::atomic::Species > > | RescueSet |
Private Member Functions | |
| void | validateState () const |
| Validates that the AdaptiveEngineView is not stale. | |
| std::pair< std::vector< ReactionFlow >, fourdst::composition::Composition > | calculateAllReactionFlows (const NetIn &netIn) const |
| Calculates the molar reaction flow rate for all reactions in the full network. | |
| std::unordered_set< fourdst::atomic::Species > | findReachableSpecies (const NetIn &netIn) const |
| Finds all species that are reachable from the initial fuel through the reaction network. | |
| std::vector< const reaction::Reaction * > | cullReactionsByFlow (const std::vector< ReactionFlow > &allFlows, const std::unordered_set< fourdst::atomic::Species > &reachableSpecies, const fourdst::composition::Composition &comp, double maxFlow) const |
| Culls reactions from the network based on their flow rates. | |
| RescueSet | rescueEdgeSpeciesDestructionChannel (const fourdst::composition::Composition &comp, double T9, double rho, const std::vector< fourdst::atomic::Species > &activeSpecies, const reaction::ReactionSet &activeReactions) const |
| void | finalizeActiveSet (const std::vector< const reaction::Reaction * > &finalReactions) |
| Finalizes the set of active species and reactions. | |
Private Attributes | |
| Config & | m_config = Config::getInstance() |
| A reference to the singleton Config instance, used for retrieving configuration parameters. | |
| quill::Logger * | m_logger = LogManager::getInstance().getLogger("log") |
| A pointer to the logger instance, used for logging messages. | |
| DynamicEngine & | m_baseEngine |
| The underlying engine to which this view delegates calculations. | |
| std::vector< fourdst::atomic::Species > | m_activeSpecies |
| The set of species that are currently active in the network. | |
| reaction::ReactionSet | m_activeReactions |
| The set of reactions that are currently active in the network. | |
| bool | m_isStale = true |
| A flag indicating whether the view is stale and needs to be updated. | |
An engine view that dynamically adapts the reaction network based on runtime conditions.
This class implements an EngineView that dynamically culls species and reactions from the full reaction network based on their reaction flow rates and connectivity. This allows for efficient simulation of reaction networks by focusing computational effort on the most important species and reactions.
The AdaptiveEngineView maintains a subset of "active" species and reactions, and maps between the full network indices and the active subset indices. This allows the base engine to operate on the full network data, while the AdaptiveEngineView provides a reduced view for external clients.
The adaptation process is driven by the update() method, which performs the following steps:
<DynamicEngine>
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explicit |
Constructs an AdaptiveEngineView.
| baseEngine | The underlying DynamicEngine to which this view delegates calculations. |
Initializes the active species and reactions to the full network, and constructs the initial index maps.
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Calculates the molar reaction flow rate for all reactions in the full network.
This method iterates through all reactions in the base engine's network and calculates their molar flow rates based on the provided network input conditions (temperature, density, and composition). It also constructs a vector of molar abundances for all species in the full network.
| netIn | The current network input, containing temperature, density, and composition. |
netIn.composition. If the species is not found, its abundance is set to 0.0.calculateMolarReactionFlow to get the flow rate.ReactionFlow struct and adds it to the returned vector.
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| comp | The current composition of the system. |
| T9 | The temperature in units of 10^9 K. |
| rho | The density in g/cm^3. |
Implements gridfire::engine::DynamicEngine.
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Calculates the molar reaction flow for a given reaction in the active network.
| reaction | The reaction for which to calculate the flow. |
| comp | Composition object containing current abundances. |
| T9 | Temperature in units of 10^9 K. |
| rho | Density in g/cm^3. |
This method maps the culled abundances to the full network abundances and calls the base engine to calculate the molar reaction flow.
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
| std::runtime_error | If the reaction is not part of the active reactions in the adaptive engine view. |
Implements gridfire::engine::DynamicEngine.
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Calculates the right-hand side (dY/dt) and energy generation for the active species.
| comp | The current composition of the system. |
| T9 | The temperature in units of 10^9 K. |
| rho | The density in g/cm^3. |
This method maps the culled abundances to the full network abundances, calls the base engine to calculate the RHS and energy generation, and then maps the full network derivatives back to the culled derivatives.
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
Implements gridfire::engine::Engine.
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Collect the composition of the base engine, ensure all active species are registered, and pass the composition back to the caller.
| comp | The current composition of the system. |
| T9 | The temperature in units of 10^9 K. |
| rho | The density in g/cm^3. |
Implements gridfire::engine::DynamicEngine.
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Culls reactions from the network based on their flow rates.
This method filters the list of all reactions, keeping only those with a flow rate above an absolute culling threshold. The threshold is calculated by multiplying the maximum flow rate by a relative culling threshold read from the configuration.
| allFlows | A vector of all reactions and their flow rates. |
| reachableSpecies | A set of all species reachable from the initial fuel. |
| comp | The current composition of the system. |
| maxFlow | The maximum reaction flow rate in the network. |
RelativeCullingThreshold from the configuration.absoluteCullingThreshold by multiplying maxFlow with the relative threshold.allFlows.flowRate is greater than the absoluteCullingThreshold.
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Finalizes the set of active species and reactions.
This method takes the final list of culled reactions and populates the m_activeReactions and m_activeSpecies members. The active species are determined by collecting all reactants and products from the final reactions. The active species list is then sorted by mass.
| finalReactions | A vector of pointers to the reactions to be included in the active set. |
m_activeReactions is cleared and populated with the reactions from finalReactions.m_activeSpecies is cleared and populated with all unique species present in finalReactions.m_activeSpecies is sorted by atomic mass.
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Finds all species that are reachable from the initial fuel through the reaction network.
This method performs a connectivity analysis to identify all species that can be produced starting from the initial fuel species. A species is considered part of the initial fuel if its mass fraction is above a certain threshold (ABUNDANCE_FLOOR).
| netIn | The current network input, containing the initial composition. |
reachable and a queue to_visit with the initial fuel species.reachable set, all products of that reaction are added to the reachable set.reachable set.
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Generates the Jacobian matrix for the active species.
| comp | The current composition of the system. |
| T9 | The temperature in units of 10^9 K. |
| rho | The density in g/cm^3. |
This method maps the culled abundances to the full network abundances and calls the base engine to generate the Jacobian matrix.
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
Implements gridfire::engine::DynamicEngine.
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Generates the Jacobian matrix for the active species with a given sparsity pattern.
| comp | The current composition of the system. |
| T9 | The temperature in units of 10^9 K. |
| rho | The density in g/cm^3. |
| sparsityPattern | The sparsity pattern to use for the Jacobian matrix. |
This method maps the culled abundances to the full network abundances and calls the base engine to generate the Jacobian matrix.
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
Implements gridfire::engine::DynamicEngine.
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Generates the Jacobian matrix for some set of active species such that that set is a subset of the active species in the view.
| comp | The current composition of the system. |
| T9 | The temperature in units of 10^9 K. |
| rho | The density in g/cm^3. |
| activeSpecies | The list of active species for which to generate the Jacobian. |
This method maps the culled abundances to the full network abundances and calls the base engine to generate the Jacobian matrix.
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
Implements gridfire::engine::DynamicEngine.
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Generates the stoichiometry matrix for the active reactions and species.
This method calls the base engine to generate the stoichiometry matrix.
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
Implements gridfire::engine::DynamicEngine.
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Gets the base engine.
Implements gridfire::engine::EngineView< DynamicEngine >.
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Gets the set of active logical reactions in the network.
Implements gridfire::engine::DynamicEngine.
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Gets the list of active species in the network.
Implements gridfire::engine::Engine.
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Gets the screening model from the base engine.
This method delegates the call to the base engine to get the screening model.
Implements gridfire::engine::DynamicEngine.
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Computes destruction timescales for all active species in the network.
| comp | Composition object containing current abundances. |
| T9 | Temperature in units of 10^9 K. |
| rho | Density in g/cm^3. |
This method maps the culled abundances to the full network abundances and calls the base engine to compute the species destruction timescales.
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
Implements gridfire::engine::DynamicEngine.
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Gets the index of a species in the active species list.
| species | The species for which to get the index. |
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
| std::out_of_range | If the species is not part of the active species in the adaptive engine view. |
Implements gridfire::engine::DynamicEngine.
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Gets the status of a species in the network.
| species | The species for which to get the status. |
This method delegates the call to the base engine to get the species status. If the base engine says that the species is active but it is not in the active species list of this view, the status is returned as INACTIVE_FLOW.
Implements gridfire::engine::DynamicEngine.
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Computes timescales for all active species in the network.
| comp | Composition object containing current abundances. |
| T9 | Temperature in units of 10^9 K. |
| rho | Density in g/cm^3. |
This method maps the culled abundances to the full network abundances and calls the base engine to compute the species timescales.
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
Implements gridfire::engine::DynamicEngine.
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Gets an entry from the stoichiometry matrix for the active species and reactions.
| species | The species for which to get the stoichiometric coefficient. |
| reaction | The reaction for which to get the stoichiometric coefficient. |
This method maps the culled indices to the full network indices and calls the base engine to get the stoichiometry matrix entry.
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
| std::out_of_range | If the culled index is out of bounds for the species or reaction index map. |
Implements gridfire::engine::DynamicEngine.
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Check if the engine's internal state is stale.
| netIn | A struct containing the current network input, such as temperature, density, and composition. |
This method allows derived classes to determine if their internal state is out-of-date with respect to the provided network conditions. If the engine is stale, it may require a call to update() before performing calculations.
Implements gridfire::engine::DynamicEngine.
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Maps the molar abundance vector from the active species to the full network species.
| netIn | The current network input, containing temperature, density, and composition. |
This method constructs a molar abundance vector for the full network by mapping the abundances from the active species in netIn to their corresponding indices in the full network. Species not present in netIn are assigned an abundance of zero.
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
Implements gridfire::engine::DynamicEngine.
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Primes the engine with the given network input.
| netIn | The current network input, containing temperature, density, and composition. |
This method delegates the priming operation to the base engine.
Implements gridfire::engine::DynamicEngine.
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Sets the reaction set for the base engine.
This method delegates the call to the base engine to set the reaction set.
| reactions | The ReactionSet to set in the base engine. |
Implements gridfire::engine::DynamicEngine.
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Sets the screening model for the base engine.
This method delegates the call to the base engine to set the electron screening model.
| model | The electron screening model to set. |
Implements gridfire::engine::DynamicEngine.
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Updates the active species and reactions based on the current conditions.
| netIn | The current network input, containing temperature, density, and composition. |
This method performs the reaction flow calculation, reaction culling, connectivity analysis, and index map construction steps described above.
The culling thresholds are read from the configuration using the following keys:
gridfire:AdaptiveEngineView:RelativeCullingThreshold (default: 1e-75)| std::runtime_error | If there is a mismatch between the active reactions and the base engine. |
Implements gridfire::engine::DynamicEngine.
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Validates that the AdaptiveEngineView is not stale.
| std::runtime_error | If the AdaptiveEngineView is stale (i.e., update() has not been called). |
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The set of reactions that are currently active in the network.
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The set of species that are currently active in the network.
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The underlying engine to which this view delegates calculations.
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A reference to the singleton Config instance, used for retrieving configuration parameters.
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A flag indicating whether the view is stale and needs to be updated.
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A pointer to the logger instance, used for logging messages.