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Improve reactor controls, reactions, and maintenance UI

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This commit is contained in:
Codex Agent
2025-11-22 18:04:36 +01:00
parent d37620ccc1
commit 863060ee78
15 changed files with 447 additions and 14 deletions
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14
src/reactor_sim/neutronics.py
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@@ -15,18 +15,19 @@ LOGGER = logging.getLogger(__name__)
def temperature_feedback(temp: float) -> float:
"""Negative coefficient: higher temperature lowers reactivity."""
reference = 900.0
coefficient = -2.5e-5
coefficient = -1.5e-5
return coefficient * (temp - reference)
def xenon_poisoning(flux: float) -> float:
return min(0.015, 2e-9 * flux)
return min(0.01, 5e-10 * flux)
@dataclass
class NeutronDynamics:
beta_effective: float = 0.0065
delayed_neutron_fraction: float = 0.0008
external_source_coupling: float = 1e-6
def reactivity(self, state: CoreState, control_fraction: float) -> float:
rho = (
@@ -37,14 +38,15 @@ class NeutronDynamics:
)
return rho
def flux_derivative(self, state: CoreState, rho: float) -> float:
def flux_derivative(self, state: CoreState, rho: float, external_source_rate: float = 0.0) -> float:
generation_time = constants.NEUTRON_LIFETIME
beta = self.beta_effective
return ((rho - beta) / generation_time) * state.neutron_flux + 1e5
source_term = self.external_source_coupling * external_source_rate
return ((rho - beta) / generation_time) * state.neutron_flux + 1e5 + source_term
def step(self, state: CoreState, control_fraction: float, dt: float) -> None:
def step(self, state: CoreState, control_fraction: float, dt: float, external_source_rate: float = 0.0) -> None:
rho = self.reactivity(state, control_fraction)
d_flux = self.flux_derivative(state, rho)
d_flux = self.flux_derivative(state, rho, external_source_rate)
state.neutron_flux = max(0.0, state.neutron_flux + d_flux * dt)
state.reactivity_margin = rho
LOGGER.debug(