修复test_mql事件后积分步长控制

PythonModels/components/amesim_pneumatic_line.py

@@ -48,7 +48,7 @@ class _DarcyPipeResistanceMixin:
             if upper > 1.0e3:
                 raise ValueError("unable to bracket pneumatic pipe resistance flow")
         lower = 0.0
-        for _ in range(80):
+        for _ in range(48):
             middle = 0.5 * (lower + upper)
             if self._darcy_pressure_drop(
                 middle,
@@ -255,15 +255,19 @@ class AmesimPnl0001Pipe(_DarcyPipeResistanceMixin, DynamicComponent):
         connected_h_2: float,
     ) -> VolumeState:
         internal = self.properties()
-        inlet_h_1 = self.connection_inlet_enthalpy(
-            port_m_flow=port_1_m_flow,
-            connected_h=connected_h_1,
-            internal_h=internal.h,
+        # PNL0001 is a fixed-volume distributed line store. Its transported
+        # energy variable therefore follows specific internal energy, not the
+        # chamber-style stagnation enthalpy contract. For this ideal gas,
+        # h = gamma * u. Outflow always carries the local u.
+        inlet_u_1 = (
+            connected_h_1 / self.gas.gamma
+            if port_1_m_flow > 0.0
+            else internal.u
         )
-        inlet_h_2 = self.connection_inlet_enthalpy(
-            port_m_flow=port_2_m_flow,
-            connected_h=connected_h_2,
-            internal_h=internal.h,
+        inlet_u_2 = (
+            connected_h_2 / self.gas.gamma
+            if port_2_m_flow > 0.0
+            else internal.u
         )
         heat_flow = (
             self.heat_transfer_coefficient
@@ -272,7 +276,7 @@ class AmesimPnl0001Pipe(_DarcyPipeResistanceMixin, DynamicComponent):
         )
         return VolumeState(
             m=port_1_m_flow + port_2_m_flow,
-            U=port_1_m_flow * inlet_h_1 + port_2_m_flow * inlet_h_2 + heat_flow,
+            U=port_1_m_flow * inlet_u_1 + port_2_m_flow * inlet_u_2 + heat_flow,
         )