上传PythonModels文件

PythonModels/components/cylinder.py

@@ -0,0 +1,55 @@
+from __future__ import annotations
+
+from PythonModels.core.base import DynamicComponent
+from PythonModels.core.medium import IdealGasMedium, ThermodynamicProperties
+from PythonModels.core.ports import PortState
+from PythonModels.core.state import VolumeState
+
+
+class Cylinder(DynamicComponent):
+    """Python port of ModelicaModels.Mycylinder."""
+
+    def __init__(
+        self,
+        name: str,
+        medium: IdealGasMedium,
+        V: float = 0.01,
+        p0: float = 35e6,
+        T0: float = 300.0,
+    ) -> None:
+        super().__init__(name=name)
+        self.medium = medium
+        self.V = V
+        m0 = p0 * V / (medium.R_gas * T0)
+        U0 = m0 * medium.specific_internal_energy(T0)
+        self.state = VolumeState(m=m0, U=U0)
+        self.port_b = PortState()
+
+    def get_state_vector(self) -> list[float]:
+        return self.state.as_vector()
+
+    def set_state_vector(self, values: list[float]) -> None:
+        self.state = VolumeState.from_vector(values)
+
+    def properties(self) -> ThermodynamicProperties:
+        props = self.medium.properties_from_mU(self.state.m, self.state.U, self.V)
+        self.port_b.p = props.p
+        self.port_b.h_outflow = props.h
+        return props
+
+    def derivatives_from_connection(
+        self,
+        *,
+        connected_h: float,
+        port_m_flow: float,
+        internal_h: float,
+    ) -> VolumeState:
+        inlet_h = self.connection_inlet_enthalpy(
+            port_m_flow=port_m_flow,
+            connected_h=connected_h,
+            internal_h=internal_h,
+        )
+        return self.derivatives(inlet_h, port_m_flow)
+
+    def derivatives(self, inlet_h: float, m_flow: float) -> VolumeState:
+        return VolumeState(m=m_flow, U=m_flow * inlet_h)