接入test_mql真实固定气室拓扑

PythonModels/components/amesim_pneumatic.py

@@ -93,6 +93,7 @@ class AmesimPneumaticVolume(DynamicComponent):
         U0 = m0 * gas.specific_internal_energy(T0)
         self.state = VolumeState(m=m0, U=U0)
         self.port_a = PortState()
+        self.port_b = PortState()
 
     @classmethod
     def from_liters(
@@ -130,11 +131,37 @@ class AmesimPneumaticVolume(DynamicComponent):
         h = self.gas.specific_enthalpy(T)
         self.port_a.p = p
         self.port_a.h_outflow = h
+        self.port_b.p = p
+        self.port_b.h_outflow = h
         return ThermodynamicProperties(p=p, T=T, rho=rho, u=u, h=h)
 
     def derivatives(self, inlet_h: float, m_flow: float) -> VolumeState:
         return VolumeState(m=m_flow, U=m_flow * inlet_h)
 
+    def derivatives_from_two_connections(
+        self,
+        *,
+        port_a_m_flow: float,
+        connected_h_a: float,
+        port_b_m_flow: float,
+        connected_h_b: float,
+        internal_h: float,
+    ) -> VolumeState:
+        inlet_h_a = self.connection_inlet_enthalpy(
+            port_m_flow=port_a_m_flow,
+            connected_h=connected_h_a,
+            internal_h=internal_h,
+        )
+        inlet_h_b = self.connection_inlet_enthalpy(
+            port_m_flow=port_b_m_flow,
+            connected_h=connected_h_b,
+            internal_h=internal_h,
+        )
+        return VolumeState(
+            m=port_a_m_flow + port_b_m_flow,
+            U=port_a_m_flow * inlet_h_a + port_b_m_flow * inlet_h_b,
+        )
+
 
 class AmesimVariablePneumaticVolume(AmesimPneumaticVolume):
     """PNCH012-style volume with a dead volume plus an external moving volume."""