对齐Amesim氦气PR物性与PNVO流量
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@@ -206,9 +206,13 @@ class AmesimPnor001(AlgebraicComponent):
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def _upstream_temperature(self, port_name: str) -> float:
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port = self.get_port(port_name)
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if port.h_outflow > 0.0:
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return max(self.medium.temperature_from_enthalpy(port.h_outflow), 1.0)
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return self.medium.T_ref
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return max(
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self.medium.temperature_from_pressure_enthalpy(
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max(port.p, 1.0),
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port.h_outflow,
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),
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1.0,
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)
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def mass_flow(self, p_1: float, p_2: float) -> float:
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if p_1 == p_2 or self.effective_area == 0.0:
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@@ -461,6 +465,7 @@ class AmesimPnvo001FixedOpening(AlgebraicComponent):
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self.port_2.h_outflow = initial_h
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self.port_3 = self.register_declared_port("port_3")
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self.port_3.h_outflow = initial_h
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self._connected_h: dict[str, float] = {}
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@staticmethod
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def _integer_parameter(name: str, value: float) -> int:
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@@ -507,9 +512,16 @@ class AmesimPnvo001FixedOpening(AlgebraicComponent):
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def _upstream_temperature(self, port_name: str) -> float:
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port = self.get_port(port_name)
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if port.h_outflow > 0.0:
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return max(self.medium.temperature_from_enthalpy(port.h_outflow), 1.0)
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return self.medium.T_ref
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# A component port's h_outflow describes fluid leaving the valve; the
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# upstream state comes from the connection on that same physical side.
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inlet_h = self._connected_h.get(port_name, port.h_outflow)
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return max(
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self.medium.temperature_from_pressure_enthalpy(
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max(port.p, 1.0),
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inlet_h,
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),
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1.0,
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)
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def mass_flow(self, p_2: float, p_3: float) -> float:
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if p_2 == p_3 or self.effective_area == 0.0:
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@@ -526,6 +538,64 @@ class AmesimPnvo001FixedOpening(AlgebraicComponent):
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upstream_temperature=self._upstream_temperature("port_3"),
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)
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def _one_way_flow_characteristics(
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self,
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*,
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upstream_pressure: float,
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downstream_pressure: float,
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upstream_temperature: float,
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) -> tuple[float, float]:
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p_up = max(upstream_pressure, 1.0)
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p_down = max(min(downstream_pressure, p_up), 0.0)
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T_up = max(upstream_temperature, 1.0)
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gamma_s = self.medium.isentropic_density_pressure_factor(
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p_up,
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T_up,
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p_down,
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)
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gamma_s = min(max(gamma_s, 1.0e-9), 1.0 - 1.0e-9)
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density = max(self.medium.density(p_up, T_up), 1.0e-12)
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pressure_ratio = max(p_down / p_up, 0.0)
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critical_ratio = (2.0 * gamma_s / (gamma_s + 1.0)) ** (
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1.0 / (1.0 - gamma_s)
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)
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if pressure_ratio <= critical_ratio:
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mass_flow_parameter = (
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sqrt(2.0 / (1.0 + gamma_s) * density * T_up / p_up)
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* (2.0 * gamma_s / (gamma_s + 1.0))
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** (gamma_s / (1.0 - gamma_s))
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)
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gas_velocity = sqrt(
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2.0 / (1.0 + gamma_s) * p_up / density
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)
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else:
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expansion = (
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pressure_ratio ** (2.0 * gamma_s)
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- pressure_ratio ** (1.0 + gamma_s)
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)
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mass_flow_parameter = sqrt(
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max(
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2.0
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/ (1.0 - gamma_s)
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* density
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* T_up
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/ p_up
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* expansion,
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0.0,
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)
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)
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gas_velocity = sqrt(
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max(
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2.0
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/ (1.0 - gamma_s)
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* p_up
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/ density
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* (1.0 - pressure_ratio ** (1.0 - gamma_s)),
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0.0,
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)
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)
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return mass_flow_parameter, gas_velocity
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def _one_way_mass_flow(
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self,
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*,
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@@ -534,44 +604,45 @@ class AmesimPnvo001FixedOpening(AlgebraicComponent):
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upstream_temperature: float,
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) -> float:
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p_up = max(upstream_pressure, 1.0)
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p_down = max(min(downstream_pressure, p_up), 0.0)
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T_up = max(upstream_temperature, 1.0)
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gamma = max(self.medium.gamma, 1.000001)
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pressure_ratio = max(p_down / p_up, 0.0)
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critical_ratio = (2.0 / (gamma + 1.0)) ** (gamma / (gamma - 1.0))
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if pressure_ratio <= critical_ratio:
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flow_factor = sqrt(gamma / (self.medium.R_gas * T_up)) * (
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2.0 / (gamma + 1.0)
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) ** ((gamma + 1.0) / (2.0 * (gamma - 1.0)))
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else:
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expansion = pressure_ratio ** (2.0 / gamma) - pressure_ratio ** (
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(gamma + 1.0) / gamma
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)
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flow_factor = sqrt(
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max(
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2.0
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* gamma
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* expansion
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/ (self.medium.R_gas * T_up * (gamma - 1.0)),
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0.0,
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)
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)
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return self.effective_cq * self.effective_area * p_up * flow_factor
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mass_flow_parameter, _gas_velocity = self._one_way_flow_characteristics(
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upstream_pressure=p_up,
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downstream_pressure=downstream_pressure,
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upstream_temperature=T_up,
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)
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return (
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self.effective_cq
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* self.effective_area
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* p_up
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* mass_flow_parameter
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/ sqrt(T_up)
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)
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def component_result_values(self) -> Mapping[str, float]:
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p_2 = max(self.port_2.p, 1.0)
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p_3 = max(self.port_3.p, 1.0)
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m_flow = abs(self.mass_flow(self.port_2.p, self.port_3.p))
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upstream_pressure = max(p_2, p_3)
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if p_2 >= p_3:
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upstream_port_name = "port_2"
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upstream_pressure = p_2
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downstream_pressure = p_3
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flow_direction = 1.0
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else:
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upstream_port_name = "port_3"
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upstream_pressure = p_3
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downstream_pressure = p_2
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flow_direction = -1.0
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upstream_temperature = self._upstream_temperature(
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"port_2" if p_2 >= p_3 else "port_3"
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upstream_port_name
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)
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mass_flow_parameter, gas_velocity = self._one_way_flow_characteristics(
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upstream_pressure=upstream_pressure,
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downstream_pressure=downstream_pressure,
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upstream_temperature=upstream_temperature,
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)
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density = max(self.medium.density(upstream_pressure, upstream_temperature), 1.0e-12)
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area = max(self.effective_area, 1.0e-18)
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return {
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"xv": self.opening,
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"cm": m_flow / (self.effective_cq * area * upstream_pressure),
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"gasvel": m_flow / (density * area),
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"cm": mass_flow_parameter,
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"gasvel": flow_direction * gas_velocity,
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}
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def pressure_flow_equation_residuals(self) -> tuple[EquationResidual, ...]:
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@@ -605,6 +676,7 @@ class AmesimPnvo001FixedOpening(AlgebraicComponent):
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)
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def update_stream_outflows(self, connected_h: Mapping[str, float]) -> None:
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self._connected_h = dict(connected_h)
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self.port_2.h_outflow = connected_h["port_3"]
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self.port_3.h_outflow = connected_h["port_2"]
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@@ -684,6 +756,7 @@ class AmesimPnvo001SignalOpening(AmesimPnvo001FixedOpening):
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self.port_2.h_outflow = initial_h
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self.port_3 = self.register_declared_port("port_3")
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self.port_3.h_outflow = initial_h
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self._connected_h: dict[str, float] = {}
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@classmethod
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def create(
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