modelFissionProducts_withDecayHeat

Extends from FissionProducts.

Parameters

TypeNameDefaultDescription
IntegernC (from FissionProducts)data.nC# of fission products
IntegernFS (from FissionProducts)data.nFS# of fission product sources
IntegernT (from FissionProducts)data.nT# of fission product types (e.g., fast/thermal)
Realparents (from FissionProducts)data.parentsMatrix of parent-daughter sources
IntegernC_add (from FissionProducts)0# of additional substances (i.e., trace fluid substances)
Initialization › Fission Sources
Units.NonDim[nFS]fissionSources_start (from FissionProducts)fill(1/nFS, nFS)Fission source material fractional composition (sum=1)
Units.NonDim[nFS,nT]fissionTypes_start (from FissionProducts)fill(1/nT, nFS, nT)Fraction of fission from each fission type per fission source, sum(row) = 1
Units.NonDimnu_bar_start (from FissionProducts)2.4Neutrons per fission
SI.Energyw_f_start (from FissionProducts)200e6*1.6022e-19Energy released per fission
SI.MacroscopicCrossSectionSigmaF_start (from FissionProducts)1Macroscopic fission cross-section of fissile material
Initialization › Fission Products
SI.Area[nC]sigmasA_start (from FissionProducts)data.sigmasAMicroscopic absorption cross-section for reactivity feedback
Real[nC,nFS,nT]fissionYields_start (from FissionProducts)data.fissionYields# fission product atoms yielded per fission per fissile source [#/fission]
Units.InverseTime[nC]lambdas_start (from FissionProducts)data.lambdasDecay constants for each fission product
Initialization
SI.PowerQ_fission_start (from FissionProducts)1e6Power determined from kinetics. Does not include fission product decay heat
SI.VolumeV_start (from FissionProducts)0.1Volume for fisson product concentration basis
SIadd.ExtraPropertyExtrinsic[nC]mCs_start (from FissionProducts)Functions.Initial_FissionProducts(nC, nFS, nT, parents, fissionSources_start, fissionTypes_start, w_f_start, SigmaF_start, sigmasA_start, fissionYields_start, lambdas_start, fill(1e10, nC), Q_fission_start, V_start)Number of fission product atoms per group
Advanced › Dynamics
DynamicstraceDynamics (from FissionProducts)Dynamics.DynamicFreeInitialFormulation of trace substance balances
Advanced
Real[nC]mC_nominal (from FissionProducts)fill(1e-6, nC)Nominal fission product atoms. For numeric purposes only.
Initialization › Additional Reactivity
SI.Area[nC_add]sigmasA_add_start (from FissionProducts)fill(0, nC_add)Microscopic absorption cross-section for reactivity feedback
Outputs
SIadd.NonDim[nC]rhos_start (from FissionProducts){-sigmasA_start[j]*mCs_start[j]/(nu_bar_start*SigmaF_start)/V_start for j in 1:nC}Initial fission product reactivity feedback
Initialization › Decay-Heat
SI.Energy[nC]w_near_decay_startdata.w_near_decayEnergy released per decay of each fission product [J/decay] (near field - e.g., beta)
SI.Energy[nC]w_far_decay_startdata.w_far_decayEnergy released per decay of each fission product [J/decay] (far field - e.g., gamma)

Components

TypeNameDefaultDescription
Datadata (from FissionProducts)
Units.NonDim[nFS]dfissionSources (from FissionProducts)fill(0, nFS)Change in source of fissile material fractional composition (sum=1)
Units.NonDim[nFS,nT]dfissionTypes (from FissionProducts)fill(0, nFS, nT)Change in fraction of fission from each fission type per fission source, sum(row) = 1
Units.NonDimdnu_bar (from FissionProducts)0Change in neutrons per fission
SI.Energydw_f (from FissionProducts)0Change in energy released per fission
SI.MacroscopicCrossSectiondSigmaF (from FissionProducts)0Change in macroscopic fission cross-section of fissile material
SI.Area[nC]dsigmasA (from FissionProducts)fill(0, nC)Change in microscopic absorption cross-section for reactivity feedback
Real[nC,nFS,nT]dfissionYields (from FissionProducts)fill(0, nC, nFS, nT)Change in # fission product atoms yielded per fission per fissile source [#/fission]
Units.InverseTime[nC]dlambdas (from FissionProducts)fill(0, nC)Change in decay constants for each fission product
Units.NonDim[nFS]fissionSources (from FissionProducts)fissionSources_start + dfissionSourcesSource of fissile material fractional composition (sum=1)
Units.NonDim[nFS,nT]fissionTypes (from FissionProducts)fissionTypes_start + dfissionTypesFraction of fission from each fission type per fission source, sum(row) = 1
Units.NonDimnu_bar (from FissionProducts)nu_bar_start + dnu_barNeutrons per fission
SI.Energyw_f (from FissionProducts)w_f_start + dw_fEnergy released per fission
SI.MacroscopicCrossSectionSigmaF (from FissionProducts)SigmaF_start + dSigmaFMacroscopic fission cross-section of fissile material
SI.Area[nC]sigmasA (from FissionProducts)sigmasA_start + dsigmasAMicroscopic absorption cross-section for reactivity feedback
Real[nC,nFS,nT]fissionYields (from FissionProducts)fissionYields_start + dfissionYields# fission product atoms yielded per fission per fissile source [#/fission]
Units.InverseTime[nC]lambdas (from FissionProducts)lambdas_start + dlambdasDecay constants for each fission product
SI.PowerQ_fission (from FissionProducts)Q_fission_startPower determined from kinetics. Does not include fission product decay heat
SI.VolumeV (from FissionProducts)V_startVolume for fisson product concentration basis
SIadd.NeutronFluxphi (from FissionProducts)Neutron flux
SIadd.ExtraPropertyFlowRate[nC]mC_gens (from FissionProducts)Generation rate of fission products [atoms/s]
SIadd.ExtraPropertyExtrinsic[nC]mCs (from FissionProducts)Number of fission product atoms
SIadd.ExtraPropertyExtrinsic[nC]mCs_scaled (from FissionProducts)Scaled number of fission product atoms for improved numerical stability
SIadd.ExtraPropertyExtrinsic[nC_add]mCs_add (from FissionProducts)fill(0, nC_add)Number of atoms
SI.VolumeVs_add (from FissionProducts)0.1Volume for fisson product concentration basis
SI.Area[nC_add]dsigmasA_add (from FissionProducts)fill(0, nC_add)Change in microscopic absorption cross-section for reactivity feedback
SI.Area[nC_add]sigmasA_add (from FissionProducts)sigmasA_add_start + dsigmasA_addMicroscopic absorption cross-section for reactivity feedback
SIadd.NonDim[nC]rhos (from FissionProducts)Fission product reactivity feedback
SIadd.ExtraPropertyFlowRatemC_gens_add (from FissionProducts)Generation rate of additional substances [atoms/s] (e.g., Boron in fluid)
SIadd.NonDim[nC_add]rhos_add (from FissionProducts)Additional subtances reactivity feedback
SI.Energy[nC]dw_near_decayfill(0, nC)Change in energy released per decay of each fission product [J/decay] (near field - e.g., beta)
SI.Energy[nC]dw_far_decayfill(0, nC)Change in energy released per decay of each fission product [J/decay] (far field - e.g., gamma)
SI.Energy[nC]w_near_decayw_near_decay_start + dw_near_decayEnergy released per decay of each fission product [J/decay] (near field - e.g., beta)
SI.Energy[nC]w_far_decayw_far_decay_start + dw_far_decayEnergy released per decay of each fission product [J/decay] (far field - e.g., gamma)
SI.PowerQs_nearNear field (e.g, beta) power released from fission product decay
SI.PowerQs_farFar field (e.g., gamma) power released from fission product decay