接入test_mql pn_node3_12主压温支路

PythonModels/systems/test_mql.py

@@ -4728,6 +4728,13 @@ class TestMqlSystem:
         p4_port1_next_port1_line = self.pnl0002_assembly.lines[
             p4_port1_next_port1.line_alias
         ]
+        p4_port1_next_orifice_output_spec = self._pnl0001_spec_for_node_port(
+            p4_port1_next_node_alias,
+            "port_4",
+        )
+        p4_port1_next_orifice_output_line = self.pnl0001_assembly.lines[
+            p4_port1_next_orifice_output_spec.alias
+        ]
         p4_bridge_node_alias = p4_port1_next_port1.remote_node_alias
         p4_bridge_node = self.node4_assembly[p4_bridge_node_alias]
         p4_bridge_primary = self._p4_primary_connection_for_node(
@@ -4909,6 +4916,34 @@ class TestMqlSystem:
                 p4_port3_next_resistance_chamber_spec.outlet_orifice_alias
             ]
         )
+        p4_port1_next_orifice_node = self.node3_assembly[
+            p4_port3_next_resistance_chamber_spec.inlet_node_alias
+        ]
+        p4_port1_next_orifice_line_spec = self._pnl0003_spec_for_node_port(
+            p4_port1_next_orifice_node.alias,
+            "port_2",
+        )
+        p4_port1_next_orifice_line = self.pnl0003_assembly.lines[
+            p4_port1_next_orifice_line_spec.alias
+        ]
+        p4_port1_next_orifice_alias = (
+            p4_port1_next_orifice_line_spec.target_component
+            if p4_port1_next_orifice_line_spec.source_component
+            == p4_port1_next_orifice_node.alias
+            else p4_port1_next_orifice_line_spec.source_component
+        )
+        p4_port1_next_orifice = self.pneumatic_assembly.variable_orifices[
+            p4_port1_next_orifice_alias
+        ]
+        if (
+            p4_port1_next_orifice_output_spec.source_component != p4_port1_next_node_alias
+            or p4_port1_next_orifice_output_spec.target_component
+            != p4_port1_next_orifice_alias
+        ):
+            raise ValueError(
+                f"{p4_port1_next_orifice_output_spec.alias} does not connect "
+                f"{p4_port1_next_node_alias}.port_4 to {p4_port1_next_orifice_alias}"
+            )
         p4_port3_remote_orifice = self.pneumatic_assembly.variable_orifices[
             p4_port3_remote_neighborhood.port_4.orifice_alias
         ]
@@ -5028,6 +5063,10 @@ class TestMqlSystem:
             raise TypeError(
                 f"{p4_port3_next_resistance_chamber_spec.outlet_orifice_alias} is not an AMESim pneumatic orifice"
             )
+        if not isinstance(p4_port1_next_orifice, AmesimPneumaticOrifice):
+            raise TypeError(
+                f"{p4_port1_next_orifice_alias} is not an AMESim pneumatic orifice"
+            )
         if not isinstance(p4_bridge_primary_chamber, AmesimPneumaticVolume):
             raise TypeError(
                 f"{p4_bridge_primary_chamber_alias} is not an AMESim pneumatic volume"
@@ -5068,6 +5107,10 @@ class TestMqlSystem:
                 p4_port1_next_primary_line=p4_port1_next_primary_line,
                 p4_port1_next_primary_chamber=p4_port1_next_primary_chamber,
                 p4_port1_next_port1_line=p4_port1_next_port1_line,
+                p4_port1_next_orifice=p4_port1_next_orifice,
+                p4_port1_next_orifice_line=p4_port1_next_orifice_line,
+                p4_port1_next_orifice_node=p4_port1_next_orifice_node,
+                p4_port1_next_orifice_output_line=p4_port1_next_orifice_output_line,
                 p4_bridge_node=p4_bridge_node,
                 p4_bridge_primary_line=p4_bridge_primary_line,
                 p4_bridge_primary_chamber=p4_bridge_primary_chamber,

PythonModels/systems/test_mql_closure.py

@@ -212,6 +212,10 @@ class TestMqlPn3P4NodeChamberSegmentComponents:
     p4_port1_next_primary_line: AmesimPnl0001Pipe
     p4_port1_next_primary_chamber: AmesimPneumaticVolume
     p4_port1_next_port1_line: AmesimPnl0002Pipe
+    p4_port1_next_orifice: AmesimPneumaticOrifice
+    p4_port1_next_orifice_line: AmesimPnl0003Pipe
+    p4_port1_next_orifice_node: TestMqlPneumaticNode3
+    p4_port1_next_orifice_output_line: AmesimPnl0001Pipe
     p4_bridge_node: TestMqlPneumaticNode4
     p4_bridge_primary_line: AmesimPnl0001Pipe
     p4_bridge_primary_chamber: AmesimPneumaticVolume
@@ -286,6 +290,9 @@ class TestMqlPn3P4NodeChamberSegmentSnapshot:
     p4_port1_next_primary_line: ThermodynamicProperties
     p4_port1_next_primary_chamber: ThermodynamicProperties
     p4_port1_next_port1_line: ThermodynamicProperties
+    p4_port1_next_orifice_line_port_1: ThermodynamicProperties
+    p4_port1_next_orifice_line_port_2: ThermodynamicProperties
+    p4_port1_next_orifice_output_line: ThermodynamicProperties
     p4_bridge_primary_line: ThermodynamicProperties
     p4_bridge_primary_chamber: ThermodynamicProperties
     p4_port1_remote_orifice_line_port_1: ThermodynamicProperties
@@ -326,6 +333,7 @@ class TestMqlPn3P4NodeChamberSegmentSnapshot:
     p4_port1_next_balance: TestMqlPneumaticNode4Balance
     p4_bridge_balance: TestMqlPneumaticNode4Balance
     p4_port1_remote_orifice_node_balance: TestMqlPneumaticNode3Balance
+    p4_port1_next_orifice_node_balance: TestMqlPneumaticNode3Balance
     p4_port3_remote_balance: TestMqlPneumaticNode4Balance
     p4_port3_far_balance: TestMqlPneumaticNode4Balance
     p4_port3_next_balance: TestMqlPneumaticNode4Balance
@@ -356,6 +364,10 @@ class TestMqlPn3P4NodeChamberSegmentSnapshot:
     p4_port1_next_chamber_to_line_flow: float
     p4_port1_next_node_to_primary_line_flow: float
     p4_port1_next_to_bridge_line_flow: float
+    p4_port1_next_orifice_p4_to_output_line_flow: float
+    p4_port1_next_orifice_node_to_line_flow: float
+    p4_port1_next_orifice_line_center_flow: float
+    p4_port1_next_orifice_to_output_line_flow: float
     p4_bridge_to_port1_next_line_flow: float
     p4_bridge_chamber_to_line_flow: float
     p4_bridge_node_to_primary_line_flow: float
@@ -389,7 +401,7 @@ class TestMqlPn3P4NodeChamberSegmentSnapshot:
     p4_port3_next_resistance_line_center_flow: float
     p4_port3_next_resistance_to_output_line_flow: float
     p4_port3_next_resistance_output_to_p4_flow: float
-    p4_port3_next_resistance_chamber_inlet_boundary_to_line_flow: float
+    p4_port3_next_resistance_chamber_inlet_node_to_line_flow: float
     p4_port3_next_resistance_chamber_inlet_line_to_chamber_flow: float
     p4_port3_next_resistance_chamber_outlet_node_to_line_flow: float
     p4_port3_next_resistance_chamber_outlet_line_to_chamber_flow: float
@@ -466,11 +478,13 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             *self.components.p4_port3_next_resistance_chamber_inlet_line.get_state_vector(),
             *self.components.p4_port3_next_resistance_chamber.get_state_vector(),
             *self.components.p4_port3_next_resistance_chamber_outlet_line.get_state_vector(),
+            *self.components.p4_port1_next_orifice_line.get_state_vector(),
+            *self.components.p4_port1_next_orifice_output_line.get_state_vector(),
         ]
 
     def apply_state_vector(self, values: list[float]) -> None:
-        if len(values) != 96:
+        if len(values) != 102:
-            raise ValueError("PN3/P4 node chamber segment state vector requires ninety-six values")
+            raise ValueError("PN3/P4 node chamber segment state vector requires one hundred 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])
@@ -512,7 +526,9 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
         self.components.p4_port3_next_resistance_output_line.set_state_vector(values[88:90])
         self.components.p4_port3_next_resistance_chamber_inlet_line.set_state_vector(values[90:92])
         self.components.p4_port3_next_resistance_chamber.set_state_vector(values[92:94])
-        self.components.p4_port3_next_resistance_chamber_outlet_line.set_state_vector(values[94:])
+        self.components.p4_port3_next_resistance_chamber_outlet_line.set_state_vector(values[94:96])
+        self.components.p4_port1_next_orifice_line.set_state_vector(values[96:100])
+        self.components.p4_port1_next_orifice_output_line.set_state_vector(values[100:])
 
     def snapshot(
         self,
@@ -547,6 +563,15 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             self.components.p4_port1_next_primary_chamber.properties()
         )
         p4_port1_next_port1_line = self.components.p4_port1_next_port1_line.properties()
+        p4_port1_next_orifice_line_port_1 = (
+            self.components.p4_port1_next_orifice_line.properties_1()
+        )
+        p4_port1_next_orifice_line_port_2 = (
+            self.components.p4_port1_next_orifice_line.properties_2()
+        )
+        p4_port1_next_orifice_output_line = (
+            self.components.p4_port1_next_orifice_output_line.properties()
+        )
         p4_bridge_primary_line = self.components.p4_bridge_primary_line.properties()
         p4_bridge_primary_chamber = self.components.p4_bridge_primary_chamber.properties()
         p4_port1_remote_orifice_line_port_1 = (
@@ -740,6 +765,12 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
                 port_temperature_k=p4_port1_next_primary_line.T,
             )
         )
+        p4_port1_next_orifice_p4_to_output_line_flow = (
+            self.components.p4_port1_next_orifice_output_line.resistance_mass_flow(
+                port_1_pressure_pa=p4_port1_next_primary_line.p,
+                port_1_temperature_k=p4_port1_next_primary_line.T,
+            )
+        )
         p4_bridge_to_port1_next_line_flow = (
             self.components.p4_port1_next_port1_line.port_mass_flow(
                 port_pressure_pa=p4_bridge_primary_line.p,
@@ -898,10 +929,10 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
         p4_port3_next_orifice_output_to_p4_flow = (
             p4_port3_next_orifice_to_output_line_flow
         )
-        p4_port3_next_resistance_chamber_inlet_boundary_to_line_flow = (
+        p4_port3_next_resistance_chamber_inlet_node_to_line_flow = (
             self.components.p4_port3_next_resistance_chamber_inlet_line.resistance_mass_flow(
-                port_1_pressure_pa=resistance_boundary.p,
+                port_1_pressure_pa=p4_port1_next_orifice_line_port_1.p,
-                port_1_temperature_k=resistance_boundary.T,
+                port_1_temperature_k=p4_port1_next_orifice_line_port_1.T,
             )
         )
         p4_port3_next_resistance_chamber_inlet_line_to_chamber_flow = (
@@ -924,6 +955,33 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
                 orifice=self.components.p4_port3_next_resistance_chamber_outlet_orifice,
             )
         )
+        p4_port1_next_orifice_node_balance = (
+            self.components.p4_port1_next_orifice_node.balance(
+                port_2_temperature_k=p4_port1_next_orifice_line_port_1.T,
+                port_2_pressure_pa=p4_port1_next_orifice_line_port_1.p,
+                port_1_enthalpy_flow_w=self._enthalpy_flow_from_node(
+                    flow_kg_s=p4_port3_next_resistance_chamber_inlet_node_to_line_flow,
+                    node_h=p4_port1_next_orifice_line_port_1.h,
+                    connected_h=p4_port3_next_resistance_chamber_inlet_line.h,
+                ),
+                port_1_mass_flow_g_s=(
+                    p4_port3_next_resistance_chamber_inlet_node_to_line_flow * 1.0e3
+                ),
+                port_3_enthalpy_flow_w=0.0,
+                port_3_mass_flow_g_s=0.0,
+            )
+        )
+        p4_port1_next_orifice_node_to_line_flow = (
+            -p4_port1_next_orifice_node_balance.port_2_mass_flow_g_s * 1.0e-3
+        )
+        p4_port1_next_orifice_line_center_flow = (
+            self.components.p4_port1_next_orifice_line.resistance_mass_flow()
+        )
+        p4_port1_next_orifice_to_output_line_flow = self._line_to_p4_flow(
+            line=p4_port1_next_orifice_line_port_2,
+            p4_boundary=p4_port1_next_orifice_output_line,
+            orifice=self.components.p4_port1_next_orifice,
+        )
         p4_port3_next_resistance_node_balance = (
             self.components.p4_port3_next_resistance_node.balance(
                 port_2_temperature_k=p4_port3_next_resistance_node_line_port_1.T,
@@ -1125,8 +1183,14 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
                 connected_h=p4_port1_far_port1_line.h,
             ),
             port_3_mass_flow_g_s=-p4_port1_next_node_to_line_flow * 1.0e3,
-            port_4_enthalpy_flow_w=0.0,
+            port_4_enthalpy_flow_w=self._enthalpy_flow_from_node(
-            port_4_mass_flow_g_s=0.0,
+                flow_kg_s=p4_port1_next_orifice_p4_to_output_line_flow,
+                node_h=p4_port1_next_primary_line.h,
+                connected_h=p4_port1_next_orifice_output_line.h,
+            ),
+            port_4_mass_flow_g_s=(
+                -p4_port1_next_orifice_p4_to_output_line_flow * 1.0e3
+            ),
         )
         p4_port1_next_node_to_primary_line_flow = (
             p4_port1_next_balance.port_2_mass_flow_g_s * 1.0e-3
@@ -1251,6 +1315,9 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             p4_port1_next_primary_line=p4_port1_next_primary_line,
             p4_port1_next_primary_chamber=p4_port1_next_primary_chamber,
             p4_port1_next_port1_line=p4_port1_next_port1_line,
+            p4_port1_next_orifice_line_port_1=p4_port1_next_orifice_line_port_1,
+            p4_port1_next_orifice_line_port_2=p4_port1_next_orifice_line_port_2,
+            p4_port1_next_orifice_output_line=p4_port1_next_orifice_output_line,
             p4_bridge_primary_line=p4_bridge_primary_line,
             p4_bridge_primary_chamber=p4_bridge_primary_chamber,
             p4_port1_remote_orifice_line_port_1=p4_port1_remote_orifice_line_port_1,
@@ -1305,6 +1372,7 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             p4_port1_next_balance=p4_port1_next_balance,
             p4_bridge_balance=p4_bridge_balance,
             p4_port1_remote_orifice_node_balance=p4_port1_remote_orifice_node_balance,
+            p4_port1_next_orifice_node_balance=p4_port1_next_orifice_node_balance,
             p4_port3_remote_balance=p4_port3_remote_balance,
             p4_port3_far_balance=p4_port3_far_balance,
             p4_port3_next_balance=p4_port3_next_balance,
@@ -1343,6 +1411,18 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
                 p4_port1_next_node_to_primary_line_flow
             ),
             p4_port1_next_to_bridge_line_flow=p4_port1_next_to_bridge_line_flow,
+            p4_port1_next_orifice_p4_to_output_line_flow=(
+                p4_port1_next_orifice_p4_to_output_line_flow
+            ),
+            p4_port1_next_orifice_node_to_line_flow=(
+                p4_port1_next_orifice_node_to_line_flow
+            ),
+            p4_port1_next_orifice_line_center_flow=(
+                p4_port1_next_orifice_line_center_flow
+            ),
+            p4_port1_next_orifice_to_output_line_flow=(
+                p4_port1_next_orifice_to_output_line_flow
+            ),
             p4_bridge_to_port1_next_line_flow=p4_bridge_to_port1_next_line_flow,
             p4_bridge_chamber_to_line_flow=p4_bridge_chamber_to_line_flow,
             p4_bridge_node_to_primary_line_flow=p4_bridge_node_to_primary_line_flow,
@@ -1412,8 +1492,8 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             p4_port3_next_resistance_output_to_p4_flow=(
                 p4_port3_next_resistance_output_to_p4_flow
             ),
-            p4_port3_next_resistance_chamber_inlet_boundary_to_line_flow=(
+            p4_port3_next_resistance_chamber_inlet_node_to_line_flow=(
-                p4_port3_next_resistance_chamber_inlet_boundary_to_line_flow
+                p4_port3_next_resistance_chamber_inlet_node_to_line_flow
             ),
             p4_port3_next_resistance_chamber_inlet_line_to_chamber_flow=(
                 p4_port3_next_resistance_chamber_inlet_line_to_chamber_flow
@@ -1668,6 +1748,30 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
         p4_port1_next_port1_line.port_2.m_flow = snapshot.p4_bridge_to_port1_next_line_flow
         p4_port1_next_port1_line.port_2.h_outflow = snapshot.p4_port1_next_port1_line.h
 
+        p4_port1_next_orifice_line = self.components.p4_port1_next_orifice_line
+        p4_port1_next_orifice_line.port_1.p = snapshot.p4_port1_next_orifice_line_port_1.p
+        p4_port1_next_orifice_line.port_1.m_flow = snapshot.p4_port1_next_orifice_node_to_line_flow
+        p4_port1_next_orifice_line.port_1.h_outflow = snapshot.p4_port1_next_orifice_line_port_1.h
+        p4_port1_next_orifice_line.port_2.p = snapshot.p4_port1_next_orifice_line_port_2.p
+        p4_port1_next_orifice_line.port_2.m_flow = -snapshot.p4_port1_next_orifice_to_output_line_flow
+        p4_port1_next_orifice_line.port_2.h_outflow = snapshot.p4_port1_next_orifice_line_port_2.h
+
+        p4_port1_next_orifice = self.components.p4_port1_next_orifice
+        p4_port1_next_orifice.port_a.p = snapshot.p4_port1_next_orifice_line_port_2.p
+        p4_port1_next_orifice.port_a.m_flow = snapshot.p4_port1_next_orifice_to_output_line_flow
+        p4_port1_next_orifice.port_a.h_outflow = snapshot.p4_port1_next_orifice_line_port_2.h
+        p4_port1_next_orifice.port_b.p = snapshot.p4_port1_next_orifice_output_line.p
+        p4_port1_next_orifice.port_b.m_flow = -snapshot.p4_port1_next_orifice_to_output_line_flow
+        p4_port1_next_orifice.port_b.h_outflow = snapshot.p4_port1_next_orifice_output_line.h
+
+        p4_port1_next_orifice_output_line = self.components.p4_port1_next_orifice_output_line
+        p4_port1_next_orifice_output_line.port_1.p = snapshot.p4_port1_next_primary_line.p
+        p4_port1_next_orifice_output_line.port_1.m_flow = snapshot.p4_port1_next_orifice_p4_to_output_line_flow
+        p4_port1_next_orifice_output_line.port_1.h_outflow = snapshot.p4_port1_next_orifice_output_line.h
+        p4_port1_next_orifice_output_line.port_2.p = snapshot.p4_port1_next_orifice_output_line.p
+        p4_port1_next_orifice_output_line.port_2.m_flow = snapshot.p4_port1_next_orifice_to_output_line_flow
+        p4_port1_next_orifice_output_line.port_2.h_outflow = snapshot.p4_port1_next_orifice_output_line.h
+
         p4_bridge_primary_line = self.components.p4_bridge_primary_line
         p4_bridge_primary_line.port_1.p = snapshot.p4_bridge_primary_chamber.p
         p4_bridge_primary_line.port_1.m_flow = snapshot.p4_bridge_chamber_to_line_flow
@@ -1893,9 +1997,9 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             self,
             line=self.components.p4_port3_next_resistance_chamber_inlet_line,
             line_properties=snapshot.p4_port3_next_resistance_chamber_inlet_line,
-            node_properties=snapshot.resistance_boundary,
+            node_properties=snapshot.p4_port1_next_orifice_line_port_1,
             node_to_line_flow=(
-                snapshot.p4_port3_next_resistance_chamber_inlet_boundary_to_line_flow
+                snapshot.p4_port3_next_resistance_chamber_inlet_node_to_line_flow
             ),
             line_to_chamber_flow=(
                 snapshot.p4_port3_next_resistance_chamber_inlet_line_to_chamber_flow
@@ -2310,8 +2414,8 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
         )
         p4_port3_next_resistance_chamber_inlet_derivative = (
             self.components.p4_port3_next_resistance_chamber_inlet_line.derivatives_from_connections(
-                port_1_m_flow=snapshot.p4_port3_next_resistance_chamber_inlet_boundary_to_line_flow,
+                port_1_m_flow=snapshot.p4_port3_next_resistance_chamber_inlet_node_to_line_flow,
-                connected_h_1=snapshot.resistance_boundary.h,
+                connected_h_1=snapshot.p4_port1_next_orifice_line_port_1.h,
                 port_2_m_flow=(
                     -snapshot.p4_port3_next_resistance_chamber_inlet_line_to_chamber_flow
                 ),
@@ -2351,6 +2455,23 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
                 connected_h_2=snapshot.p4_port3_next_resistance_chamber.h,
             )
         )
+        (
+            p4_port1_next_orifice_derivative_1,
+            p4_port1_next_orifice_derivative_2,
+        ) = self.components.p4_port1_next_orifice_line.derivatives_from_connections(
+            port_1_m_flow=snapshot.p4_port1_next_orifice_node_to_line_flow,
+            connected_h_1=snapshot.p4_port1_next_orifice_line_port_1.h,
+            port_2_m_flow=-snapshot.p4_port1_next_orifice_to_output_line_flow,
+            connected_h_2=snapshot.p4_port1_next_orifice_output_line.h,
+        )
+        p4_port1_next_orifice_output_derivative = (
+            self.components.p4_port1_next_orifice_output_line.derivatives_from_connections(
+                port_1_m_flow=snapshot.p4_port1_next_orifice_p4_to_output_line_flow,
+                connected_h_1=snapshot.p4_port1_next_primary_line.h,
+                port_2_m_flow=snapshot.p4_port1_next_orifice_to_output_line_flow,
+                connected_h_2=snapshot.p4_port1_next_orifice_line_port_2.h,
+            )
+        )
         return [
             *inlet_derivative.as_vector(),
             *chamber_derivative.as_vector(),
@@ -2400,6 +2521,9 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             *p4_port3_next_resistance_chamber_inlet_derivative.as_vector(),
             *p4_port3_next_resistance_fixed_chamber_derivative.as_vector(),
             *p4_port3_next_resistance_chamber_outlet_derivative.as_vector(),
+            *p4_port1_next_orifice_derivative_1.as_vector(),
+            *p4_port1_next_orifice_derivative_2.as_vector(),
+            *p4_port1_next_orifice_output_derivative.as_vector(),
         ]
 
 

tests/test_test_mql_pnl0001_segment.py

@@ -456,8 +456,24 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
             closure.components.p4_port3_next_resistance_chamber_outlet_orifice.name,
             "pn_orifice_23",
         )
-        self.assertEqual(len(closure.initial_state_vector()), 96)
+        self.assertEqual(
-        self.assertEqual(len(rhs), 96)
+            closure.components.p4_port1_next_orifice.name,
+            "pn_morifice_11",
+        )
+        self.assertEqual(
+            closure.components.p4_port1_next_orifice_line.name,
+            "pneumatic_77",
+        )
+        self.assertEqual(
+            closure.components.p4_port1_next_orifice_node.alias,
+            "pn_node3_12",
+        )
+        self.assertEqual(
+            closure.components.p4_port1_next_orifice_output_line.name,
+            "pneumatic_79",
+        )
+        self.assertEqual(len(closure.initial_state_vector()), 102)
+        self.assertEqual(len(rhs), 102)
         self.assertAlmostEqual(
             snapshot.p4_balance.pressure_pa,
             snapshot.p4_primary_line.p,
@@ -534,6 +550,25 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
             closure.components.p4_port1_next_port1_line.name,
             port1_next_port1.line_alias,
         )
+        self.assertEqual(
+            closure.components.p4_port1_next_orifice_output_line.name,
+            self.system._pnl0001_line_for_node_port(
+                closure.components.p4_port1_next_node.alias,
+                "port_4",
+            ).name,
+        )
+        self.assertEqual(
+            closure.components.p4_port1_next_orifice_node.alias,
+            "pn_node3_12",
+        )
+        self.assertEqual(
+            closure.components.p4_port1_next_orifice_line.name,
+            self.system._pnl0003_line_for_node_port("pn_node3_12", "port_2").name,
+        )
+        self.assertEqual(
+            closure.components.p4_port1_next_orifice.name,
+            "pn_morifice_11",
+        )
         self.assertEqual(
             closure.components.p4_bridge_node.alias,
             port1_next_port1.remote_node_alias,
@@ -781,7 +816,8 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
         self.assertAlmostEqual(
             snapshot.p4_port1_next_node_to_primary_line_flow
             + snapshot.p4_port1_next_node_to_line_flow
-            + snapshot.p4_port1_next_to_bridge_line_flow,
+            + snapshot.p4_port1_next_to_bridge_line_flow
+            + snapshot.p4_port1_next_orifice_p4_to_output_line_flow,
             0.0,
             delta=1.0e-12,
         )
@@ -865,6 +901,12 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
             snapshot.p4_port3_next_resistance_to_output_line_flow,
             delta=1.0e-12,
         )
+        self.assertAlmostEqual(
+            snapshot.p4_port1_next_orifice_node_to_line_flow
+            + snapshot.p4_port3_next_resistance_chamber_inlet_node_to_line_flow,
+            0.0,
+            delta=1.0e-12,
+        )
         next_chamber_mass_sum = rhs[78] + rhs[80] + rhs[82]
         self.assertAlmostEqual(
             next_chamber_mass_sum,
@@ -878,19 +920,36 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
         self.assertAlmostEqual(
             resistance_chamber_mass_sum,
             (
-                snapshot.p4_port3_next_resistance_chamber_inlet_boundary_to_line_flow
+                snapshot.p4_port3_next_resistance_chamber_inlet_node_to_line_flow
                 + snapshot.p4_port3_next_resistance_chamber_outlet_node_to_line_flow
             ),
             delta=1.0e-12,
         )
-        mass_derivative_sum = sum(rhs[index] for index in range(0, 96, 2))
+        p4_port1_next_orifice_line_mass_sum = rhs[96] + rhs[98]
+        self.assertAlmostEqual(
+            p4_port1_next_orifice_line_mass_sum,
+            (
+                snapshot.p4_port1_next_orifice_node_to_line_flow
+                - snapshot.p4_port1_next_orifice_to_output_line_flow
+            ),
+            delta=1.0e-12,
+        )
+        self.assertAlmostEqual(
+            rhs[100],
+            (
+                snapshot.p4_port1_next_orifice_p4_to_output_line_flow
+                + snapshot.p4_port1_next_orifice_to_output_line_flow
+            ),
+            delta=1.0e-12,
+        )
+        mass_derivative_sum = sum(rhs[index] for index in range(0, 102, 2))
         self.assertAlmostEqual(
             mass_derivative_sum,
-            snapshot.p4_port3_next_resistance_chamber_inlet_boundary_to_line_flow,
+            0.0,
             delta=1.0e-12,
         )
 
-    def test_simulates_ninety_six_state_pn3_p4_node_chamber_segment(self) -> None:
+    def test_simulates_one_hundred_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,
@@ -905,8 +964,8 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
 
         self.assertTrue(solution.success)
         self.assertEqual(len(solution.t), 3)
-        self.assertEqual(len(solution.y), 96)
+        self.assertEqual(len(solution.y), 102)
-        self.assertEqual([len(row) for row in solution.y], [3] * 96)
+        self.assertEqual([len(row) for row in solution.y], [3] * 102)
 
 
 if __name__ == "__main__":