diff --git a/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleSlip/JohnsonJacksonParticleSlipFvPatchVectorField.C b/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleSlip/JohnsonJacksonParticleSlipFvPatchVectorField.C
index 0d59cd97ea..ce6ed769e2 100644
--- a/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleSlip/JohnsonJacksonParticleSlipFvPatchVectorField.C
+++ b/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleSlip/JohnsonJacksonParticleSlipFvPatchVectorField.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2014-2023 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2014-2024 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -50,17 +50,12 @@ JohnsonJacksonParticleSlipFvPatchVectorField
 )
 :
     partialSlipFvPatchVectorField(p, iF),
-    specularityCoefficient_
-    (
-        "specularityCoefficient",
-        dimless,
-        dict.lookup("specularityCoefficient")
-    )
+    specularityCoefficient_(dict.lookup<scalar>("specularityCoefficient"))
 {
     if
     (
-        (specularityCoefficient_.value() < 0)
-     || (specularityCoefficient_.value() > 1)
+        (specularityCoefficient_ < 0)
+     || (specularityCoefficient_ > 1)
     )
     {
         FatalErrorInFunction
@@ -163,7 +158,7 @@ void Foam::JohnsonJacksonParticleSlipFvPatchVectorField::updateCoeffs()
         constant::mathematical::pi
        *alpha
        *gs0
-       *specularityCoefficient_.value()
+       *specularityCoefficient_
        *sqrt(3*Theta)
        /max(6*nu*phase.alphaMax(), small)
     );
diff --git a/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleSlip/JohnsonJacksonParticleSlipFvPatchVectorField.H b/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleSlip/JohnsonJacksonParticleSlipFvPatchVectorField.H
index 635a094f16..da5339f46d 100644
--- a/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleSlip/JohnsonJacksonParticleSlipFvPatchVectorField.H
+++ b/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleSlip/JohnsonJacksonParticleSlipFvPatchVectorField.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2014-2023 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2014-2024 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -69,7 +69,7 @@ class JohnsonJacksonParticleSlipFvPatchVectorField
     // Private Data
 
         //- Specularity coefficient
-        dimensionedScalar specularityCoefficient_;
+        scalar specularityCoefficient_;
 
 
 public:
diff --git a/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleTheta/JohnsonJacksonParticleThetaFvPatchScalarField.C b/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleTheta/JohnsonJacksonParticleThetaFvPatchScalarField.C
index a11dae3123..dd61a6df65 100644
--- a/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleTheta/JohnsonJacksonParticleThetaFvPatchScalarField.C
+++ b/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleTheta/JohnsonJacksonParticleThetaFvPatchScalarField.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2014-2023 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2014-2024 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -49,23 +49,13 @@ JohnsonJacksonParticleThetaFvPatchScalarField
 )
 :
     mixedFvPatchScalarField(p, iF, dict, false),
-    restitutionCoefficient_
-    (
-        "restitutionCoefficient",
-        dimless,
-        dict.lookup("restitutionCoefficient")
-    ),
-    specularityCoefficient_
-    (
-        "specularityCoefficient",
-        dimless,
-        dict.lookup("specularityCoefficient")
-    )
+    restitutionCoefficient_(dict.lookup<scalar>("restitutionCoefficient")),
+    specularityCoefficient_(dict.lookup<scalar>("specularityCoefficient"))
 {
     if
     (
-        (restitutionCoefficient_.value() < 0)
-     || (restitutionCoefficient_.value() > 1)
+        (restitutionCoefficient_ < 0)
+     || (restitutionCoefficient_ > 1)
     )
     {
         FatalErrorInFunction
@@ -75,8 +65,8 @@ JohnsonJacksonParticleThetaFvPatchScalarField
 
     if
     (
-        (specularityCoefficient_.value() < 0)
-     || (specularityCoefficient_.value() > 1)
+        (specularityCoefficient_ < 0)
+     || (specularityCoefficient_ > 1)
     )
     {
         FatalErrorInFunction
@@ -182,13 +172,13 @@ void Foam::JohnsonJacksonParticleThetaFvPatchScalarField::updateCoeffs()
     const scalarField Theta(patchInternalField());
 
     // calculate the reference value and the value fraction
-    if (restitutionCoefficient_.value() != 1.0)
+    if (restitutionCoefficient_ != 1.0)
     {
         this->refValue() =
             (2.0/3.0)
-           *specularityCoefficient_.value()
+           *specularityCoefficient_
            *magSqr(U)
-           /(scalar(1) - sqr(restitutionCoefficient_.value()));
+           /(scalar(1) - sqr(restitutionCoefficient_));
 
         this->refGrad() = 0.0;
 
@@ -197,7 +187,7 @@ void Foam::JohnsonJacksonParticleThetaFvPatchScalarField::updateCoeffs()
              constant::mathematical::pi
             *alpha
             *gs0
-            *(scalar(1) - sqr(restitutionCoefficient_.value()))
+            *(scalar(1) - sqr(restitutionCoefficient_))
             *sqrt(3*Theta)
             /max(4*kappa*phase.alphaMax(), small)
         );
@@ -214,7 +204,7 @@ void Foam::JohnsonJacksonParticleThetaFvPatchScalarField::updateCoeffs()
         this->refGrad() =
             pos0(alpha - small)
            *constant::mathematical::pi
-           *specularityCoefficient_.value()
+           *specularityCoefficient_
            *alpha
            *gs0
            *sqrt(3*Theta)
diff --git a/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleTheta/JohnsonJacksonParticleThetaFvPatchScalarField.H b/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleTheta/JohnsonJacksonParticleThetaFvPatchScalarField.H
index 2b45fc3912..24b67c127a 100644
--- a/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleTheta/JohnsonJacksonParticleThetaFvPatchScalarField.H
+++ b/applications/modules/multiphaseEuler/momentumTransportModels/derivedFvPatchFields/JohnsonJacksonParticleTheta/JohnsonJacksonParticleThetaFvPatchScalarField.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2014-2023 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2014-2024 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -69,10 +69,10 @@ class JohnsonJacksonParticleThetaFvPatchScalarField
     // Private Data
 
         //- Particle-wall restitution coefficient
-        dimensionedScalar restitutionCoefficient_;
+        scalar restitutionCoefficient_;
 
         //- Specularity coefficient
-        dimensionedScalar specularityCoefficient_;
+        scalar specularityCoefficient_;
 
 
 public: