PythonModels/systems/test_mql.py

@@ -4825,6 +4825,21 @@ class TestMqlSystem:
         p4_port3_remote_resistance_orifice = self.pneumatic_assembly.variable_orifices[
             p4_port3_remote_resistance_orifice_alias
         ]
+        p4_port3_remote_resistance_output_spec = self._pnl0001_spec_for_node_port(
+            p4_port3_far_node_alias,
+            "port_4",
+        )
+        if (
+            p4_port3_remote_resistance_output_spec.source_component
+            != p4_port3_remote_resistance_orifice_alias
+        ):
+            raise ValueError(
+                f"{p4_port3_remote_resistance_output_spec.alias} is not fed by "
+                f"{p4_port3_remote_resistance_orifice_alias}"
+            )
+        p4_port3_remote_resistance_output_line = self.pnl0001_assembly.lines[
+            p4_port3_remote_resistance_output_spec.alias
+        ]
         volume = self.network.components[spec.volume_alias]
         inlet_orifice = self.network.components[spec.inlet_orifice_alias]
         outlet_orifice = self.network.components[spec.outlet_orifice_alias]
@@ -4928,6 +4943,9 @@ class TestMqlSystem:
                 p4_port3_remote_resistance_orifice=(
                     p4_port3_remote_resistance_orifice
                 ),
+                p4_port3_remote_resistance_output_line=(
+                    p4_port3_remote_resistance_output_line
+                ),
                 volume=volume,
                 inlet_orifice=inlet_orifice,
                 outlet_orifice=outlet_orifice,

PythonModels/systems/test_mql_closure.py

@@ -238,6 +238,7 @@ class TestMqlPn3P4NodeChamberSegmentComponents:
     p4_port3_remote_resistance_node: TestMqlPneumaticNode3
     p4_port3_remote_resistance_node_line: AmesimPnl0003Pipe
     p4_port3_remote_resistance_orifice: AmesimPneumaticOrifice
+    p4_port3_remote_resistance_output_line: AmesimPnl0001Pipe
     volume: AmesimPneumaticVolume
     inlet_orifice: AmesimPneumaticOrifice
     outlet_orifice: AmesimPneumaticOrifice
@@ -282,6 +283,7 @@ class TestMqlPn3P4NodeChamberSegmentSnapshot:
     p4_port3_remote_orifice_line_port_2: ThermodynamicProperties
     p4_port3_remote_resistance_node_line_port_1: ThermodynamicProperties
     p4_port3_remote_resistance_node_line_port_2: ThermodynamicProperties
+    p4_port3_remote_resistance_output_line: ThermodynamicProperties
     inlet_node: ThermodynamicProperties
     resistance_boundary: ThermodynamicProperties
     node_balance: TestMqlPneumaticNode3Balance
@@ -343,7 +345,8 @@ class TestMqlPn3P4NodeChamberSegmentSnapshot:
     p4_port3_remote_node_to_resistance_flow: float
     p4_port3_remote_resistance_node_to_line_flow: float
     p4_port3_remote_resistance_line_center_flow: float
-    p4_port3_remote_resistance_to_p4_flow: float
+    p4_port3_remote_resistance_to_output_line_flow: float
+    p4_port3_remote_resistance_output_to_p4_flow: float
     p4_port3_remote_orifice_line_center_flow: float
     p4_port3_remote_orifice_to_node_flow: float
 
@@ -399,12 +402,13 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             *self.components.p4_port3_next_primary_chamber.get_state_vector(),
             *self.components.p4_port3_next_port3_line.get_state_vector(),
             *self.components.p4_port3_remote_resistance_node_line.get_state_vector(),
+            *self.components.p4_port3_remote_resistance_output_line.get_state_vector(),
             *self.components.p4_port3_remote_orifice_line.get_state_vector(),
         ]
 
     def apply_state_vector(self, values: list[float]) -> None:
-        if len(values) != 70:
-            raise ValueError("PN3/P4 node chamber segment state vector requires seventy values")
+        if len(values) != 72:
+            raise ValueError("PN3/P4 node chamber segment state vector requires seventy-two values")
         self.components.inlet_line.set_state_vector(values[:2])
         self.components.volume.set_state_vector(values[2:4])
         self.components.outlet_line.set_state_vector(values[4:6])
@@ -435,7 +439,8 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
         self.components.p4_port3_next_primary_chamber.set_state_vector(values[58:60])
         self.components.p4_port3_next_port3_line.set_state_vector(values[60:62])
         self.components.p4_port3_remote_resistance_node_line.set_state_vector(values[62:66])
-        self.components.p4_port3_remote_orifice_line.set_state_vector(values[66:])
+        self.components.p4_port3_remote_resistance_output_line.set_state_vector(values[66:68])
+        self.components.p4_port3_remote_orifice_line.set_state_vector(values[68:])
 
     def snapshot(
         self,
@@ -510,6 +515,9 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
         p4_port3_remote_resistance_node_line_port_2 = (
             self.components.p4_port3_remote_resistance_node_line.properties_2()
         )
+        p4_port3_remote_resistance_output_line = (
+            self.components.p4_port3_remote_resistance_output_line.properties()
+        )
         inlet_node = self.inlet_node.properties(self.components.inlet_line.gas)
         resistance_boundary = self.resistance_boundary.properties(
             self.components.node_resistance.gas
@@ -771,11 +779,14 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
         p4_port3_remote_resistance_line_center_flow = (
             self.components.p4_port3_remote_resistance_node_line.resistance_mass_flow()
         )
-        p4_port3_remote_resistance_to_p4_flow = self._line_to_p4_flow(
+        p4_port3_remote_resistance_to_output_line_flow = self._line_to_p4_flow(
             line=p4_port3_remote_resistance_node_line_port_2,
-            p4_boundary=p4_port3_far_primary_line,
+            p4_boundary=p4_port3_remote_resistance_output_line,
             orifice=self.components.p4_port3_remote_resistance_orifice,
         )
+        p4_port3_remote_resistance_output_to_p4_flow = (
+            p4_port3_remote_resistance_to_output_line_flow
+        )
         p4_port3_remote_orifice_line_center_flow = (
             self.components.p4_port3_remote_orifice_line.resistance_mass_flow()
         )
@@ -929,11 +940,11 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             ),
             port_3_mass_flow_g_s=-p4_port3_far_to_next_line_flow * 1.0e3,
             port_4_enthalpy_flow_w=self._enthalpy_flow_from_node(
-                flow_kg_s=p4_port3_remote_resistance_to_p4_flow,
-                node_h=p4_port3_remote_resistance_node_line_port_2.h,
+                flow_kg_s=p4_port3_remote_resistance_output_to_p4_flow,
+                node_h=p4_port3_remote_resistance_output_line.h,
                 connected_h=p4_port3_far_primary_line.h,
             ),
-            port_4_mass_flow_g_s=p4_port3_remote_resistance_to_p4_flow * 1.0e3,
+            port_4_mass_flow_g_s=p4_port3_remote_resistance_output_to_p4_flow * 1.0e3,
         )
         p4_port3_far_node_to_primary_line_flow = (
             p4_port3_far_balance.port_2_mass_flow_g_s * 1.0e-3
@@ -1022,6 +1033,9 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             p4_port3_remote_resistance_node_line_port_2=(
                 p4_port3_remote_resistance_node_line_port_2
             ),
+            p4_port3_remote_resistance_output_line=(
+                p4_port3_remote_resistance_output_line
+            ),
             inlet_node=inlet_node,
             resistance_boundary=resistance_boundary,
             node_balance=node_balance,
@@ -1109,8 +1123,11 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             p4_port3_remote_resistance_line_center_flow=(
                 p4_port3_remote_resistance_line_center_flow
             ),
-            p4_port3_remote_resistance_to_p4_flow=(
-                p4_port3_remote_resistance_to_p4_flow
+            p4_port3_remote_resistance_to_output_line_flow=(
+                p4_port3_remote_resistance_to_output_line_flow
+            ),
+            p4_port3_remote_resistance_output_to_p4_flow=(
+                p4_port3_remote_resistance_output_to_p4_flow
             ),
             p4_port3_remote_orifice_line_center_flow=(
                 p4_port3_remote_orifice_line_center_flow
@@ -1477,16 +1494,24 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
         p4_port3_remote_resistance_node_line.port_1.m_flow = snapshot.p4_port3_remote_resistance_node_to_line_flow
         p4_port3_remote_resistance_node_line.port_1.h_outflow = snapshot.p4_port3_remote_resistance_node_line_port_1.h
         p4_port3_remote_resistance_node_line.port_2.p = snapshot.p4_port3_remote_resistance_node_line_port_2.p
-        p4_port3_remote_resistance_node_line.port_2.m_flow = -snapshot.p4_port3_remote_resistance_to_p4_flow
+        p4_port3_remote_resistance_node_line.port_2.m_flow = -snapshot.p4_port3_remote_resistance_to_output_line_flow
         p4_port3_remote_resistance_node_line.port_2.h_outflow = snapshot.p4_port3_remote_resistance_node_line_port_2.h
 
         p4_port3_remote_resistance_orifice = self.components.p4_port3_remote_resistance_orifice
         p4_port3_remote_resistance_orifice.port_a.p = snapshot.p4_port3_remote_resistance_node_line_port_2.p
-        p4_port3_remote_resistance_orifice.port_a.m_flow = snapshot.p4_port3_remote_resistance_to_p4_flow
+        p4_port3_remote_resistance_orifice.port_a.m_flow = snapshot.p4_port3_remote_resistance_to_output_line_flow
         p4_port3_remote_resistance_orifice.port_a.h_outflow = snapshot.p4_port3_remote_resistance_node_line_port_2.h
-        p4_port3_remote_resistance_orifice.port_b.p = snapshot.p4_port3_far_primary_line.p
-        p4_port3_remote_resistance_orifice.port_b.m_flow = -snapshot.p4_port3_remote_resistance_to_p4_flow
-        p4_port3_remote_resistance_orifice.port_b.h_outflow = snapshot.p4_port3_far_primary_line.h
+        p4_port3_remote_resistance_orifice.port_b.p = snapshot.p4_port3_remote_resistance_output_line.p
+        p4_port3_remote_resistance_orifice.port_b.m_flow = -snapshot.p4_port3_remote_resistance_to_output_line_flow
+        p4_port3_remote_resistance_orifice.port_b.h_outflow = snapshot.p4_port3_remote_resistance_output_line.h
+
+        p4_port3_remote_resistance_output_line = self.components.p4_port3_remote_resistance_output_line
+        p4_port3_remote_resistance_output_line.port_1.p = snapshot.p4_port3_remote_resistance_node_line_port_2.p
+        p4_port3_remote_resistance_output_line.port_1.m_flow = snapshot.p4_port3_remote_resistance_to_output_line_flow
+        p4_port3_remote_resistance_output_line.port_1.h_outflow = snapshot.p4_port3_remote_resistance_output_line.h
+        p4_port3_remote_resistance_output_line.port_2.p = snapshot.p4_port3_remote_resistance_output_line.p
+        p4_port3_remote_resistance_output_line.port_2.m_flow = -snapshot.p4_port3_remote_resistance_output_to_p4_flow
+        p4_port3_remote_resistance_output_line.port_2.h_outflow = snapshot.p4_port3_remote_resistance_output_line.h
 
         p4_port3_remote_orifice = self.components.p4_port3_remote_orifice
         p4_port3_remote_orifice.port_a.p = snapshot.p4_port3_remote_orifice_line_port_2.p
@@ -1745,9 +1770,17 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
         ) = self.components.p4_port3_remote_resistance_node_line.derivatives_from_connections(
             port_1_m_flow=snapshot.p4_port3_remote_resistance_node_to_line_flow,
             connected_h_1=snapshot.p4_port3_remote_resistance_node_line_port_1.h,
-            port_2_m_flow=-snapshot.p4_port3_remote_resistance_to_p4_flow,
+            port_2_m_flow=-snapshot.p4_port3_remote_resistance_to_output_line_flow,
+            connected_h_2=snapshot.p4_port3_remote_resistance_output_line.h,
+        )
+        p4_port3_remote_resistance_output_derivative = (
+            self.components.p4_port3_remote_resistance_output_line.derivatives_from_connections(
+                port_1_m_flow=snapshot.p4_port3_remote_resistance_to_output_line_flow,
+                connected_h_1=snapshot.p4_port3_remote_resistance_node_line_port_2.h,
+                port_2_m_flow=-snapshot.p4_port3_remote_resistance_output_to_p4_flow,
                 connected_h_2=snapshot.p4_port3_far_primary_line.h,
             )
+        )
         p4_port3_remote_orifice_derivative_1, p4_port3_remote_orifice_derivative_2 = (
             self.components.p4_port3_remote_orifice_line.derivatives_from_connections(
                 port_1_m_flow=snapshot.p4_port3_remote_node_to_orifice_line_flow,
@@ -1790,6 +1823,7 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             *p4_port3_next_port3_derivative.as_vector(),
             *p4_port3_remote_resistance_derivative_1.as_vector(),
             *p4_port3_remote_resistance_derivative_2.as_vector(),
+            *p4_port3_remote_resistance_output_derivative.as_vector(),
             *p4_port3_remote_orifice_derivative_1.as_vector(),
             *p4_port3_remote_orifice_derivative_2.as_vector(),
         ]

tests/test_test_mql_pnl0001_segment.py

@@ -376,8 +376,12 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
             closure.components.p4_port3_remote_resistance_orifice.name,
             "pn_morifice_14",
         )
-        self.assertEqual(len(closure.initial_state_vector()), 70)
-        self.assertEqual(len(rhs), 70)
+        self.assertEqual(
+            closure.components.p4_port3_remote_resistance_output_line.name,
+            "pneumatic_94",
+        )
+        self.assertEqual(len(closure.initial_state_vector()), 72)
+        self.assertEqual(len(rhs), 72)
         self.assertAlmostEqual(
             snapshot.p4_balance.pressure_pa,
             snapshot.p4_primary_line.p,
@@ -559,6 +563,13 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
             closure.components.p4_port3_remote_resistance_orifice.name,
             "pn_morifice_14",
         )
+        self.assertEqual(
+            closure.components.p4_port3_remote_resistance_output_line.name,
+            self.system._pnl0001_line_for_node_port(
+                closure.components.p4_port3_far_node.alias,
+                "port_4",
+            ).name,
+        )
         self.assertEqual(
             closure.components.node_orifice.name,
             neighborhood.port_4.orifice_alias,
@@ -650,11 +661,16 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
             snapshot.p4_port3_remote_node_to_resistance_flow,
             delta=1.0e-12,
         )
+        self.assertAlmostEqual(
+            snapshot.p4_port3_remote_resistance_output_to_p4_flow,
+            snapshot.p4_port3_remote_resistance_to_output_line_flow,
+            delta=1.0e-12,
+        )
         self.assertAlmostEqual(
             snapshot.p4_port3_far_node_to_primary_line_flow
             + snapshot.p4_port3_far_node_to_line_flow
             + snapshot.p4_port3_far_to_next_line_flow
-            - snapshot.p4_port3_remote_resistance_to_p4_flow,
+            - snapshot.p4_port3_remote_resistance_output_to_p4_flow,
             0.0,
             delta=1.0e-12,
         )
@@ -665,14 +681,14 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
             0.0,
             delta=1.0e-12,
         )
-        mass_derivative_sum = sum(rhs[index] for index in range(0, 70, 2))
+        mass_derivative_sum = sum(rhs[index] for index in range(0, 72, 2))
         self.assertAlmostEqual(
             mass_derivative_sum,
             0.0,
             delta=1.0e-12,
         )
 
-    def test_simulates_seventy_state_pn3_p4_node_chamber_segment(self) -> None:
+    def test_simulates_seventy_two_state_pn3_p4_node_chamber_segment(self) -> None:
         solution = self.system.simulate_pn3_p4_node_chamber_segment_from_spec(
             self.spec,
             inlet_node_pressure_pa=15.31e6,
@@ -687,8 +703,8 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
 
         self.assertTrue(solution.success)
         self.assertEqual(len(solution.t), 3)
-        self.assertEqual(len(solution.y), 70)
-        self.assertEqual([len(row) for row in solution.y], [3] * 70)
+        self.assertEqual(len(solution.y), 72)
+        self.assertEqual([len(row) for row in solution.y], [3] * 72)
 
 
 if __name__ == "__main__":