diff --git a/applications/modules/multiphaseEuler/phaseSystems/ThermalPhaseChangePhaseSystem/ThermalPhaseChangePhaseSystem.C b/applications/modules/multiphaseEuler/phaseSystems/ThermalPhaseChangePhaseSystem/ThermalPhaseChangePhaseSystem.C
index baa5f46a1b..36efe90555 100644
--- a/applications/modules/multiphaseEuler/phaseSystems/ThermalPhaseChangePhaseSystem/ThermalPhaseChangePhaseSystem.C
+++ b/applications/modules/multiphaseEuler/phaseSystems/ThermalPhaseChangePhaseSystem/ThermalPhaseChangePhaseSystem.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2015-2023 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2015-2024 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -689,9 +689,7 @@ Foam::ThermalPhaseChangePhaseSystem<BasePhaseSystem>::correctInterfaceThermo()
 
                 wallBoilingActive = true;
 
-                nDmdtf +=
-                    (interface == wbht.activePhaseInterface() ? +1 : -1)
-                   *wbht.dmdtf();
+                nDmdtf += (wbht.flipSign() ? -1 : +1)*wbht.dmdtf();
             }
 
             forAllConstIter(phaseInterface, interface, interfaceIter)
diff --git a/applications/modules/multiphaseEuler/thermophysicalTransportModels/heatTransferModels/wallBoiling/wallBoilingHeatTransfer.C b/applications/modules/multiphaseEuler/thermophysicalTransportModels/heatTransferModels/wallBoiling/wallBoilingHeatTransfer.C
index 8d5d8ff891..640c6a1bed 100644
--- a/applications/modules/multiphaseEuler/thermophysicalTransportModels/heatTransferModels/wallBoiling/wallBoilingHeatTransfer.C
+++ b/applications/modules/multiphaseEuler/thermophysicalTransportModels/heatTransferModels/wallBoiling/wallBoilingHeatTransfer.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2019-2023 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2019-2024 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -69,7 +69,6 @@ Foam::heatTransferModels::wallBoilingHeatTransfer::wallBoilingHeatTransfer
        .otherInterface()
     ),
     vapourPhaseName_(dict.lookup("vapourPhase")),
-    liquidPhaseName_(dict.lookup("liquidPhase")),
     heatTransferModel_
     (
         heatTransferModel::New
@@ -81,7 +80,6 @@ Foam::heatTransferModels::wallBoilingHeatTransfer::wallBoilingHeatTransfer
         )
     ),
     relax_(dict.lookupOrDefault<scalar>("relax", scalar(1))),
-    seedFraction_(dict.lookupOrDefault<scalar>("nucleationSeedFraction", 1e-4)),
     partitioningModel_(nullptr),
     nucleationSiteModel_(nullptr),
     departureDiamModel_(nullptr),
@@ -395,14 +393,14 @@ activePhaseInterface(const phaseInterfaceKey& phaseInterface) const
 }
 
 
-Foam::phaseInterfaceKey Foam::heatTransferModels::wallBoilingHeatTransfer::
-activePhaseInterface() const
+bool Foam::heatTransferModels::wallBoilingHeatTransfer::
+flipSign() const
 {
     const phaseModel& liquid = interface_.continuous();
     const phaseSystem& fluid = liquid.fluid();
     const phaseModel& vapour(fluid.phases()[vapourPhaseName_]);
 
-    return phaseInterfaceKey(vapour, liquid);
+    return vapour.name() != phaseInterfaceKey(vapour, liquid).first();
 }
 
 
diff --git a/applications/modules/multiphaseEuler/thermophysicalTransportModels/heatTransferModels/wallBoiling/wallBoilingHeatTransfer.H b/applications/modules/multiphaseEuler/thermophysicalTransportModels/heatTransferModels/wallBoiling/wallBoilingHeatTransfer.H
index f8af72ce33..025cb4e6ac 100644
--- a/applications/modules/multiphaseEuler/thermophysicalTransportModels/heatTransferModels/wallBoiling/wallBoilingHeatTransfer.H
+++ b/applications/modules/multiphaseEuler/thermophysicalTransportModels/heatTransferModels/wallBoiling/wallBoilingHeatTransfer.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2019-2023 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2019-2024 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -46,7 +46,6 @@ Usage
     {
         type            wallBoiling;
 
-        liquidPhase     liquid;
         vapourPhase     gas;
 
         heatTransferModel
@@ -124,18 +123,12 @@ class wallBoilingHeatTransfer
         //- Name of the vapour phase
         const word vapourPhaseName_;
 
-        //- Name of the liquid phase
-        const word liquidPhaseName_;
-
         //- Pointer to the underlying heat transfer model
         autoPtr<heatTransferModel> heatTransferModel_;
 
         //- Relaxation factor
         const scalar relax_;
 
-        //- Bulk nucleation seed phase fraction
-        const scalar seedFraction_;
-
         //- Run-time selected heat flux partitioning model
         autoPtr<Foam::wallBoilingModels::partitioningModel>
             partitioningModel_;
@@ -206,8 +199,8 @@ public:
         //- Is there phase change mass transfer for this phaseInterface
         bool activePhaseInterface(const phaseInterfaceKey&) const;
 
-        //- Key for the phase change phaseInterface
-        phaseInterfaceKey activePhaseInterface() const;
+        //- True if the sign of dmdtf should be changed
+        bool flipSign() const;
 
         //- Return the rate of phase-change
         const volScalarField& dmdtf() const;
diff --git a/tutorials/multiphaseEuler/boilingBed/0/T.solid b/tutorials/multiphaseEuler/boilingBed/0/T.solid
index d40c7a6025..f169d8ae28 100644
--- a/tutorials/multiphaseEuler/boilingBed/0/T.solid
+++ b/tutorials/multiphaseEuler/boilingBed/0/T.solid
@@ -31,7 +31,7 @@ boundaryField
     wall
     {
         type            fixedValue;
-        value           uniform 350;
+        value           uniform 373;
     }
     front
     {
diff --git a/tutorials/multiphaseEuler/boilingBed/0/omega.gas b/tutorials/multiphaseEuler/boilingBed/0/omega.gas
index e5e1e62c53..5539a98cc5 100644
--- a/tutorials/multiphaseEuler/boilingBed/0/omega.gas
+++ b/tutorials/multiphaseEuler/boilingBed/0/omega.gas
@@ -10,7 +10,7 @@ FoamFile
     format      ascii;
     class       volScalarField;
     location    "0";
-    object      omega.liquid;
+    object      omega.gas;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -29,7 +29,7 @@ boundaryField
     outlet
     {
         type            inletOutlet;
-        phi             phi.liquid;
+        phi             phi.gas;
         inletValue      uniform 0.0015;
         value           uniform 0.01;
     }
diff --git a/tutorials/multiphaseEuler/boilingBed/constant/phaseProperties b/tutorials/multiphaseEuler/boilingBed/constant/phaseProperties
index 43eaf0ef77..b15388c4aa 100644
--- a/tutorials/multiphaseEuler/boilingBed/constant/phaseProperties
+++ b/tutorials/multiphaseEuler/boilingBed/constant/phaseProperties
@@ -155,7 +155,6 @@ heatTransfer
         type            wallBoiling;
 
         vapourPhase     gas;
-        liquidPhase     liquid;
 
         partitioningModel
         {