diff --git a/src/optimisation/adjointOptimisation/adjoint/objectives/incompressible/objectiveFlowRatePartition/objectiveFlowRatePartition.C b/src/optimisation/adjointOptimisation/adjoint/objectives/incompressible/objectiveFlowRatePartition/objectiveFlowRatePartition.C
index 6c30f833ca..ddb9448090 100644
--- a/src/optimisation/adjointOptimisation/adjoint/objectives/incompressible/objectiveFlowRatePartition/objectiveFlowRatePartition.C
+++ b/src/optimisation/adjointOptimisation/adjoint/objectives/incompressible/objectiveFlowRatePartition/objectiveFlowRatePartition.C
@@ -75,23 +75,30 @@ objectiveFlowRatePartition::objectiveFlowRatePartition
             dict.get<wordRes>("outletPatches")
         ).sortedToc()
     ),
-    targetFlowRatePercentage_(),
-    currentFlowRatePercentage_(outletPatches_.size(), Zero),
+    targetFlowRateFraction_(),
+    currentFlowRateFraction_(outletPatches_.size(), Zero),
     inletFlowRate_(0),
     flowRateDifference_(outletPatches_.size(), Zero)
 {
-    // Read target percentages if present, otherwise treat them as equally
+    // Read target fractions if present, otherwise treat them as equally
     // distributed
-    if (!dict.readIfPresent("targetPercentages", targetFlowRatePercentage_))
+    if
+    (
+        !dict.readIfPresentCompat
+        (
+            "targetFractions", {{"targetPercentages", 2306}},
+            targetFlowRateFraction_
+        )
+    )
     {
         const label nOutPatches = outletPatches_.size();
-        targetFlowRatePercentage_.setSize(nOutPatches, 1.0/scalar(nOutPatches));
+        targetFlowRateFraction_.setSize(nOutPatches, 1.0/scalar(nOutPatches));
     }
     // Sanity checks
-    if (targetFlowRatePercentage_.size() != outletPatches_.size())
+    if (targetFlowRateFraction_.size() != outletPatches_.size())
     {
         FatalErrorInFunction
-            << "Inconsistent sizes for targetPercentages and outletPatches"
+            << "Inconsistent sizes for targetFractions and outletPatches"
             << exit(FatalError);
 
     }
@@ -130,9 +137,9 @@ scalar objectiveFlowRatePartition::J()
     {
         const label patchI = outletPatches_[pI];
         const scalar outletFlowRate = gSum(phi.boundaryField()[patchI]);
-        currentFlowRatePercentage_[pI] = -outletFlowRate/inletFlowRate_;
+        currentFlowRateFraction_[pI] = -outletFlowRate/inletFlowRate_;
         flowRateDifference_[pI] =
-            targetFlowRatePercentage_[pI] - currentFlowRatePercentage_[pI];
+            targetFlowRateFraction_[pI] - currentFlowRateFraction_[pI];
         J_ += 0.5*flowRateDifference_[pI]*flowRateDifference_[pI];
     }
 
@@ -172,7 +179,7 @@ void objectiveFlowRatePartition::addHeaderInfo() const
         const fvPatch& patch = mesh_.boundary()[patchI];
         objFunctionFilePtr_()
             << setw(width_) << word("#" + patch.name() + "Tar") << " "
-            << setw(width_) << targetFlowRatePercentage_[pI] << endl;
+            << setw(width_) << targetFlowRateFraction_[pI] << endl;
     }
 }
 
@@ -190,7 +197,7 @@ void objectiveFlowRatePartition::addHeaderColumns() const
 
 void objectiveFlowRatePartition::addColumnValues() const
 {
-    for (const scalar flowRate : currentFlowRatePercentage_)
+    for (const scalar flowRate : currentFlowRateFraction_)
     {
         objFunctionFilePtr_()
             << setw(width_) << flowRate << " ";
diff --git a/src/optimisation/adjointOptimisation/adjoint/objectives/incompressible/objectiveFlowRatePartition/objectiveFlowRatePartition.H b/src/optimisation/adjointOptimisation/adjoint/objectives/incompressible/objectiveFlowRatePartition/objectiveFlowRatePartition.H
index 19c0619f33..ac450a6ad2 100644
--- a/src/optimisation/adjointOptimisation/adjoint/objectives/incompressible/objectiveFlowRatePartition/objectiveFlowRatePartition.H
+++ b/src/optimisation/adjointOptimisation/adjoint/objectives/incompressible/objectiveFlowRatePartition/objectiveFlowRatePartition.H
@@ -61,8 +61,8 @@ class objectiveFlowRatePartition
 
         labelList inletPatches_;
         labelList outletPatches_;
-        scalarList targetFlowRatePercentage_;
-        scalarList currentFlowRatePercentage_;
+        scalarList targetFlowRateFraction_;
+        scalarList currentFlowRateFraction_;
         scalar inletFlowRate_;
         scalarList flowRateDifference_;
 
diff --git a/tutorials/incompressible/adjointOptimisationFoam/shapeOptimisation/fork-uneven/flowRatePartition/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/shapeOptimisation/fork-uneven/flowRatePartition/system/optimisationDict
index 453d844e54..5c1046c287 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/shapeOptimisation/fork-uneven/flowRatePartition/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/shapeOptimisation/fork-uneven/flowRatePartition/system/optimisationDict
@@ -66,7 +66,7 @@ adjointManagers
                             outletPatches     (outlet1 outlet2);
                             // Optional entry. If abscent, inlet flow rate will
                             // be partitioned equally between outlets
-                            // targetPercentages (0.5 0.5);
+                            // targetFractions (0.5 0.5);
                             normalize         true;
                         }
                     }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet/porosityBased/R_20x_massConstr/reEval/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet/porosityBased/R_20x_massConstr/reEval/system/optimisationDict
index ebb9063e1e..3fc1f4985d 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet/porosityBased/R_20x_massConstr/reEval/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet/porosityBased/R_20x_massConstr/reEval/system/optimisationDict
@@ -69,7 +69,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet outlet-right);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                         }
                     }
                 }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet/porosityBased/R_20x_massConstr/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet/porosityBased/R_20x_massConstr/system/optimisationDict
index 99605c4f1a..b72dd4268f 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet/porosityBased/R_20x_massConstr/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet/porosityBased/R_20x_massConstr/system/optimisationDict
@@ -104,7 +104,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet outlet-right);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                             normalize         true;
                             target            1.e-5;
                         }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-30-70/reEval/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-30-70/reEval/system/optimisationDict
index ebb9063e1e..3fc1f4985d 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-30-70/reEval/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-30-70/reEval/system/optimisationDict
@@ -69,7 +69,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet outlet-right);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                         }
                     }
                 }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-30-70/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-30-70/system/optimisationDict
index 5fc60fe5a5..116fe57eb5 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-30-70/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-30-70/system/optimisationDict
@@ -108,7 +108,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet outlet-right);
-                            targetPercentages (0.3 0.7);
+                            targetFractions   (0.5 0.5);
                             target            1.e-05;
                             normalize         true;
                         }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-50-50/reEval/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-50-50/reEval/system/optimisationDict
index ebb9063e1e..3fc1f4985d 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-50-50/reEval/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-50-50/reEval/system/optimisationDict
@@ -69,7 +69,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet outlet-right);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                         }
                     }
                 }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-50-50/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-50-50/system/optimisationDict
index 116a2d129b..116fe57eb5 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-50-50/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-50-50/system/optimisationDict
@@ -108,7 +108,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet outlet-right);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                             target            1.e-05;
                             normalize         true;
                         }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-70-30/reEval/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-70-30/reEval/system/optimisationDict
index ebb9063e1e..3fc1f4985d 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-70-30/reEval/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-70-30/reEval/system/optimisationDict
@@ -69,7 +69,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet outlet-right);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                         }
                     }
                 }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-70-30/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-70-30/system/optimisationDict
index 1c862f72d0..116fe57eb5 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-70-30/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/1_Inlet_2_Outlet_Dual_Bottleneck/losses-mass-70-30/system/optimisationDict
@@ -108,7 +108,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet outlet-right);
-                            targetPercentages (0.7 0.3);
+                            targetFractions   (0.5 0.5);
                             target            1.e-05;
                             normalize         true;
                         }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass-uniformity/reEval/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass-uniformity/reEval/system/optimisationDict
index cd3c9a5d53..339c20d9a8 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass-uniformity/reEval/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass-uniformity/reEval/system/optimisationDict
@@ -75,7 +75,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet1 outlet2);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                         }
                     }
                 }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass-uniformity/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass-uniformity/system/optimisationDict
index 185ae850ed..0495e950a1 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass-uniformity/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass-uniformity/system/optimisationDict
@@ -174,7 +174,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet1 outlet2);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                             normalize         true;
                             target            1.e-5;
                         }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass/reEval/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass/reEval/system/optimisationDict
index cd3c9a5d53..339c20d9a8 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass/reEval/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass/reEval/system/optimisationDict
@@ -75,7 +75,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet1 outlet2);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                         }
                     }
                 }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass/system/optimisationDict
index 41a39e3c5d..74df184c31 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses-mass/system/optimisationDict
@@ -113,7 +113,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet1 outlet2);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                             normalize         true;
                             target            1.e-5;
                         }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses/reEval/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses/reEval/system/optimisationDict
index cd3c9a5d53..339c20d9a8 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses/reEval/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses/reEval/system/optimisationDict
@@ -75,7 +75,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet1 outlet2);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                         }
                     }
                 }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses/system/optimisationDict
index 043566224b..1538ed839c 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/laminar/3DBox/losses/system/optimisationDict
@@ -76,7 +76,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet1 outlet2);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                         }
                     }
                 }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/turbulent/1_Inlet_2_Outlet/porosityBased/losses-massConstr/reEval/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/turbulent/1_Inlet_2_Outlet/porosityBased/losses-massConstr/reEval/system/optimisationDict
index ebb9063e1e..3fc1f4985d 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/turbulent/1_Inlet_2_Outlet/porosityBased/losses-massConstr/reEval/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/turbulent/1_Inlet_2_Outlet/porosityBased/losses-massConstr/reEval/system/optimisationDict
@@ -69,7 +69,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet outlet-right);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                         }
                     }
                 }
diff --git a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/turbulent/1_Inlet_2_Outlet/porosityBased/losses-massConstr/system/optimisationDict b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/turbulent/1_Inlet_2_Outlet/porosityBased/losses-massConstr/system/optimisationDict
index 611f4852fc..128517a7af 100644
--- a/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/turbulent/1_Inlet_2_Outlet/porosityBased/losses-massConstr/system/optimisationDict
+++ b/tutorials/incompressible/adjointOptimisationFoam/topologyOptimisation/monoFluidAero/turbulent/1_Inlet_2_Outlet/porosityBased/losses-massConstr/system/optimisationDict
@@ -108,7 +108,7 @@ adjointManagers
                             type              flowRatePartition;
                             inletPatches      (inlet);
                             outletPatches     (outlet outlet-right);
-                            targetPercentages (0.5 0.5);
+                            targetFractions   (0.5 0.5);
                             normalize         true;
                             target            1.e-5;
                         }