modelTraceSubstances
Trace substances reactivity (i.e., substances in fluid pipes)
Parameters
| Type | Name | Default | Description |
|---|
| Integer | nV | 1 | # of discrete volumes |
| Integer | nC | 0 | # of trace substances |
| SI.MacroscopicCrossSection | SigmaF_start | 1 | Macroscopic fission cross-section of fissile material |
| Units.NonDim | nu_bar_start | 2.4 | Neutrons per fission |
| SI.Energy | w_f_start | 200e6*1.6022e-19 | Energy released per fission |
| SI.Area[nC] | sigmasA_start | fill(0, nC) | Microscopic absorption cross-section for reactivity feedback |
Components
| Type | Name | Default | Description |
|---|
| SI.Power[nV] | Qs_fission | fill(1e6/nV, nV) | Power determined from kinetics. Does not include fission product decay heat |
| SI.MacroscopicCrossSection | dSigmaF | 0 | Change in macroscopic fission cross-section of fissile material |
| Units.NonDim | dnu_bar | 0 | Change in neutrons per fission |
| SI.Energy | dw_f | 0 | Change in energy released per fission |
| SI.MacroscopicCrossSection | SigmaF | SigmaF_start + dSigmaF | Macroscopic fission cross-section of fissile material |
| Units.NonDim | nu_bar | nu_bar_start + dnu_bar | Neutrons per fission |
| SI.Energy | w_f | w_f_start + dw_f | Energy released per fission |
| SIadd.ExtraPropertyExtrinsic[nV,nC] | mCs | fill(0, nV, nC) | Number of atoms |
| SI.Volume | Vs | fill(0.1, nV) | Volume for trace substance concentration basis |
| SI.Area[nC] | dsigmasA | fill(0, nC) | Change in microscopic absorption cross-section for reactivity feedback |
| SI.Area[nC] | sigmasA | sigmasA_start + dsigmasA | Microscopic absorption cross-section for reactivity feedback |
| SIadd.NeutronFlux[nV] | phi | | Neutron flux |
| SIadd.ExtraPropertyFlowRate | mC_gens | | Generation rate of additional substances [atoms/s] (e.g., Boron in fluid) |
| SIadd.NonDim[nV,nC] | rhos | | Additional subtances reactivity feedback |