diff --git a/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/InjectionModel/InjectionModel.H b/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/InjectionModel/InjectionModel.H
index f235314642..718f595e14 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/InjectionModel/InjectionModel.H
+++ b/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/InjectionModel/InjectionModel.H
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2018 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -274,6 +274,9 @@ public:
             //- Return mass of particles injected (cumulative)
             inline scalar massInjected() const;
 
+            //- Return injectorID
+            inline label injectorID() const;
+
             //- Return the end-of-injection time
             virtual scalar timeEnd() const = 0;
 
diff --git a/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/InjectionModel/InjectionModelI.H b/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/InjectionModel/InjectionModelI.H
index 06245309da..fd26db534b 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/InjectionModel/InjectionModelI.H
+++ b/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/InjectionModel/InjectionModelI.H
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2018 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -55,6 +55,13 @@ Foam::scalar Foam::InjectionModel<CloudType>::massInjected() const
 }
 
 
+template<class CloudType>
+Foam::label Foam::InjectionModel<CloudType>::injectorID() const
+{
+    return injectorID_;
+}
+
+
 template<class CloudType>
 Foam::label Foam::InjectionModel<CloudType>::nInjections() const
 {
diff --git a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/LocalInteraction.C b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/LocalInteraction.C
index 190e4a61ac..b5e7d162db 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/LocalInteraction.C
+++ b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/LocalInteraction.C
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
-     \\/     M anipulation  | Copyright (C) 2015-2016 OpenCFD Ltd.
+     \\/     M anipulation  | Copyright (C) 2015-2018 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -36,11 +36,13 @@ Foam::LocalInteraction<CloudType>::LocalInteraction
 :
     PatchInteractionModel<CloudType>(dict, cloud, typeName),
     patchData_(cloud.mesh(), this->coeffDict()),
-    nEscape_(patchData_.size(), 0),
-    massEscape_(patchData_.size(), 0.0),
-    nStick_(patchData_.size(), 0),
-    massStick_(patchData_.size(), 0.0),
+    nEscape_(patchData_.size()),
+    massEscape_(patchData_.size()),
+    nStick_(patchData_.size()),
+    massStick_(patchData_.size()),
     writeFields_(this->coeffDict().lookupOrDefault("writeFields", false)),
+    outputByInjectorId_(this->coeffDict().lookupOrDefault("outputByInjectorId", false)),
+    injIdToIndex_(cloud.injectors().size()),
     massEscapePtr_(nullptr),
     massStickPtr_(nullptr)
 {
@@ -77,6 +79,21 @@ Foam::LocalInteraction<CloudType>::LocalInteraction
                 << this->PatchInteractionModel<CloudType>::interactionTypeNames_
                 << nl << exit(FatalError);
         }
+
+        label nInjectors(1);
+        if (outputByInjectorId_)
+        {
+            nInjectors = cloud.injectors().size();
+            for (label i=0; i<nInjectors; i++)
+            {
+                injIdToIndex_.insert(cloud.injectors()[i].injectorID(), i);
+            }
+        }
+
+        nEscape_[patchi].setSize(nInjectors, 0);
+        massEscape_[patchi].setSize(nInjectors, 0.0);
+        nStick_[patchi].setSize(nInjectors, 0);
+        massStick_[patchi].setSize(nInjectors, 0.0);
     }
 }
 
@@ -94,6 +111,8 @@ Foam::LocalInteraction<CloudType>::LocalInteraction
     nStick_(pim.nStick_),
     massStick_(pim.massStick_),
     writeFields_(pim.writeFields_),
+    outputByInjectorId_(pim.outputByInjectorId_),
+    injIdToIndex_(pim.injIdToIndex_),
     massEscapePtr_(nullptr),
     massStickPtr_(nullptr)
 {}
@@ -199,8 +218,16 @@ bool Foam::LocalInteraction<CloudType>::correct
                 keepParticle = false;
                 p.active(false);
                 U = Zero;
-                nEscape_[patchi]++;
-                massEscape_[patchi] += dm;
+                if (outputByInjectorId_)
+                {
+                    nEscape_[patchi][injIdToIndex_[p.typeId()]]++;
+                    massEscape_[patchi][injIdToIndex_[p.typeId()]] += dm;
+                }
+                else
+                {
+                    nEscape_[patchi][0]++;
+                    massEscape_[patchi][0] += dm;
+                }
                 if (writeFields_)
                 {
                     label pI = pp.index();
@@ -216,8 +243,16 @@ bool Foam::LocalInteraction<CloudType>::correct
                 keepParticle = true;
                 p.active(false);
                 U = Zero;
-                nStick_[patchi]++;
-                massStick_[patchi] += dm;
+                if (outputByInjectorId_)
+                {
+                    nStick_[patchi][injIdToIndex_[p.typeId()]]++;
+                    massStick_[patchi][injIdToIndex_[p.typeId()]] += dm;
+                }
+                else
+                {
+                    nStick_[patchi][0]++;
+                    massStick_[patchi][0] += dm;
+                }
                 if (writeFields_)
                 {
                     label pI = pp.index();
@@ -279,59 +314,91 @@ void Foam::LocalInteraction<CloudType>::info(Ostream& os)
     PatchInteractionModel<CloudType>::info(os);
 
     // retrieve any stored data
-    labelList npe0(patchData_.size(), 0);
+    labelListList npe0(nEscape_);
     this->getModelProperty("nEscape", npe0);
 
-    scalarList mpe0(patchData_.size(), 0.0);
+    scalarListList mpe0(massEscape_);
     this->getModelProperty("massEscape", mpe0);
 
-    labelList nps0(patchData_.size(), 0);
+    labelListList nps0(nStick_);
     this->getModelProperty("nStick", nps0);
 
-    scalarList mps0(patchData_.size(), 0.0);
+    scalarListList mps0(massStick_);
     this->getModelProperty("massStick", mps0);
 
     // accumulate current data
-    labelList npe(nEscape_);
-    Pstream::listCombineGather(npe, plusEqOp<label>());
-    npe = npe + npe0;
-
-    scalarList mpe(massEscape_);
-    Pstream::listCombineGather(mpe, plusEqOp<scalar>());
-    mpe = mpe + mpe0;
-
-    labelList nps(nStick_);
-    Pstream::listCombineGather(nps, plusEqOp<label>());
-    nps = nps + nps0;
-
-    scalarList mps(massStick_);
-    Pstream::listCombineGather(mps, plusEqOp<scalar>());
-    mps = mps + mps0;
-
-
-    forAll(patchData_, i)
+    labelListList npe(nEscape_);
+    forAll(npe, i)
     {
-        os  << "    Parcel fate: patch " <<  patchData_[i].patchName()
-            << " (number, mass)" << nl
-            << "      - escape                      = " << npe[i]
-            << ", " << mpe[i] << nl
-            << "      - stick                       = " << nps[i]
-            << ", " << mps[i] << nl;
+        Pstream::listCombineGather(npe[i], plusEqOp<label>());
+        npe[i] = npe[i] + npe0[i];
+    }
+
+    scalarListList mpe(massEscape_);
+    forAll(mpe, i)
+    {
+        Pstream::listCombineGather(mpe[i], plusEqOp<scalar>());
+        mpe[i] = mpe[i] + mpe0[i];
+    }
+
+    labelListList nps(nStick_);
+    forAll(nps, i)
+    {
+        Pstream::listCombineGather(nps[i], plusEqOp<label>());
+        nps[i] = nps[i] + nps0[i];
+    }
+
+    scalarListList mps(massStick_);
+    forAll(nps, i)
+    {
+        Pstream::listCombineGather(mps[i], plusEqOp<scalar>());
+        mps[i] = mps[i] + mps0[i];
+    }
+
+
+    if (outputByInjectorId_)
+    {
+        forAll(patchData_, i)
+        {
+            forAll (mpe[i], injId)
+            {
+                os  << "    Parcel fate: patch " <<  patchData_[i].patchName()
+                    << " (number, mass)" << nl
+                    << "      - escape  (injector " << injIdToIndex_.toc()[injId]
+                    << " )  = " << npe[i][injId]
+                    << ", " << mpe[i][injId] << nl
+                    << "      - stick   (injector " << injIdToIndex_.toc()[injId]
+                    << " )  = " << nps[i][injId]
+                    << ", " << mps[i][injId] << nl;
+            }
+        }
+    }
+    else
+    {
+        forAll(patchData_, i)
+        {
+            os  << "    Parcel fate: patch " <<  patchData_[i].patchName()
+                << " (number, mass)" << nl
+                << "      - escape                      = " << npe[i][0]
+                << ", " << mpe[i][0] << nl
+                << "      - stick                       = " << nps[i][0]
+                << ", " << mps[i][0] << nl;
+        }
     }
 
     if (this->writeTime())
     {
         this->setModelProperty("nEscape", npe);
-        nEscape_ = 0;
+        nEscape_ = Zero;
 
         this->setModelProperty("massEscape", mpe);
-        massEscape_ = 0.0;
+        massEscape_ = Zero;
 
         this->setModelProperty("nStick", nps);
-        nStick_ = 0;
+        nStick_ = Zero;
 
         this->setModelProperty("massStick", mps);
-        massStick_ = 0.0;
+        massStick_ = Zero;
     }
 }
 
diff --git a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/LocalInteraction.H b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/LocalInteraction.H
index e75a55f29d..693389c1b4 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/LocalInteraction.H
+++ b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/LocalInteraction.H
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2018 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -61,21 +61,27 @@ class LocalInteraction
         // Counters for particle fates
 
             //- Number of parcels escaped
-            List<label> nEscape_;
+            List<List<label>> nEscape_;
 
             //- Mass of parcels escaped
-            List<scalar> massEscape_;
+            List<List<scalar>> massEscape_;
 
             //- Number of parcels stuck to patches
-            List<label> nStick_;
+            List<List<label>> nStick_;
 
             //- Mass of parcels stuck to patches
-            List<scalar> massStick_;
+            List<List<scalar>> massStick_;
 
 
         //- Flag to output data as fields
         Switch writeFields_;
 
+        //- Flag to output escaped/mass particles sorted by injectorID
+        Switch outputByInjectorId_;
+
+        //- InjectorId to index map
+        Map<label> injIdToIndex_;
+
         //- Mass escape field
         autoPtr<volScalarField> massEscapePtr_;
 
@@ -83,6 +89,7 @@ class LocalInteraction
         autoPtr<volScalarField> massStickPtr_;
 
 
+
 public:
 
     //- Runtime type information
diff --git a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/StandardWallInteraction/StandardWallInteraction.C b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/StandardWallInteraction/StandardWallInteraction.C
index 96a7b26afb..0d874dc45d 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/StandardWallInteraction/StandardWallInteraction.C
+++ b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/StandardWallInteraction/StandardWallInteraction.C
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
-     \\/     M anipulation  | Copyright (C) 2015 OpenCFD Ltd.
+     \\/     M anipulation  | Copyright (C) 2015-2018 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -35,16 +35,19 @@ Foam::StandardWallInteraction<CloudType>::StandardWallInteraction
 )
 :
     PatchInteractionModel<CloudType>(dict, cloud, typeName),
+    mesh_(cloud.mesh()),
     interactionType_
     (
         this->wordToInteractionType(this->coeffDict().lookup("type"))
     ),
     e_(0.0),
     mu_(0.0),
-    nEscape_(0),
-    massEscape_(0.0),
-    nStick_(0),
-    massStick_(0.0)
+    nEscape_(cloud.mesh().boundary().size()),
+    massEscape_(nEscape_.size()),
+    nStick_(nEscape_.size()),
+    massStick_(nEscape_.size()),
+    outputByInjectorId_(this->coeffDict().lookupOrDefault("outputByInjectorId", false)),
+    injIdToIndex_(cloud.injectors().size())
 {
     switch (interactionType_)
     {
@@ -69,6 +72,24 @@ Foam::StandardWallInteraction<CloudType>::StandardWallInteraction
         default:
         {}
     }
+
+    forAll(nEscape_, patchi)
+    {
+        label nInjectors(1);
+        if (outputByInjectorId_)
+        {
+            nInjectors = cloud.injectors().size();
+            for (label i=0; i<nInjectors; i++)
+            {
+                injIdToIndex_.insert(cloud.injectors()[i].injectorID(), i);
+            }
+        }
+
+        nEscape_[patchi].setSize(nInjectors, 0);
+        massEscape_[patchi].setSize(nInjectors, 0.0);
+        nStick_[patchi].setSize(nInjectors, 0);
+        massStick_[patchi].setSize(nInjectors, 0.0);
+    }
 }
 
 
@@ -79,13 +100,16 @@ Foam::StandardWallInteraction<CloudType>::StandardWallInteraction
 )
 :
     PatchInteractionModel<CloudType>(pim),
+    mesh_(pim.mesh_),
     interactionType_(pim.interactionType_),
     e_(pim.e_),
     mu_(pim.mu_),
     nEscape_(pim.nEscape_),
     massEscape_(pim.massEscape_),
     nStick_(pim.nStick_),
-    massStick_(pim.massStick_)
+    massStick_(pim.massStick_),
+    outputByInjectorId_(pim.outputByInjectorId_),
+    injIdToIndex_(pim.injIdToIndex_)
 {}
 
 
@@ -121,8 +145,17 @@ bool Foam::StandardWallInteraction<CloudType>::correct
                 keepParticle = false;
                 p.active(false);
                 U = Zero;
-                nEscape_++;
-                massEscape_ += p.nParticle()*p.mass();
+                const scalar dm = p.nParticle()*p.mass();
+                if (outputByInjectorId_)
+                {
+                    nEscape_[pp.index()][injIdToIndex_[p.typeId()]]++;
+                    massEscape_[pp.index()][injIdToIndex_[p.typeId()]] += dm;
+                }
+                else
+                {
+                    nEscape_[pp.index()][0]++;
+                    massEscape_[pp.index()][0] += dm;
+                }
                 break;
             }
             case PatchInteractionModel<CloudType>::itStick:
@@ -130,8 +163,17 @@ bool Foam::StandardWallInteraction<CloudType>::correct
                 keepParticle = true;
                 p.active(false);
                 U = Zero;
-                nStick_++;
-                massStick_ += p.nParticle()*p.mass();
+                const scalar dm = p.nParticle()*p.mass();
+                if (outputByInjectorId_)
+                {
+                    nStick_[pp.index()][injIdToIndex_[p.typeId()]]++;
+                    massStick_[pp.index()][injIdToIndex_[p.typeId()]] += dm;
+                }
+                else
+                {
+                    nStick_[pp.index()][0]++;
+                    massStick_[pp.index()][0] += dm;
+                }
                 break;
             }
             case PatchInteractionModel<CloudType>::itRebound:
@@ -184,28 +226,87 @@ void Foam::StandardWallInteraction<CloudType>::info(Ostream& os)
 {
     PatchInteractionModel<CloudType>::info(os);
 
-    label npe0 = this->template getModelProperty<scalar>("nEscape");
-    label npe = npe0 + returnReduce(nEscape_, sumOp<label>());
+    labelListList npe0(nEscape_);
+    this->getModelProperty("nEscape", npe0);
 
-    scalar mpe0 = this->template getModelProperty<scalar>("massEscape");
-    scalar mpe = mpe0 + returnReduce(massEscape_, sumOp<scalar>());
+    scalarListList mpe0(massEscape_);
+    this->getModelProperty("massEscape", mpe0);
 
-    label nps0 = this->template getModelProperty<scalar>("nStick");
-    label nps = nps0 + returnReduce(nStick_, sumOp<label>());
+    labelListList nps0(nStick_);
+    this->getModelProperty("nStick", nps0);
 
-    scalar mps0 = this->template getModelProperty<scalar>("massStick");
-    scalar mps = mps0 + returnReduce(massStick_, sumOp<scalar>());
+    scalarListList mps0(massStick_);
+    this->getModelProperty("massStick", mps0);
 
-    os  << "    Parcel fate: walls (number, mass)" << nl
-        << "      - escape                      = " << npe << ", " << mpe << nl
-        << "      - stick                       = " << nps << ", " << mps << nl;
+    // accumulate current data
+    labelListList npe(nEscape_);
+    forAll(npe, i)
+    {
+        Pstream::listCombineGather(npe[i], plusEqOp<label>());
+        npe[i] = npe[i] + npe0[i];
+    }
+
+    scalarListList mpe(massEscape_);
+    forAll(mpe, i)
+    {
+        Pstream::listCombineGather(mpe[i], plusEqOp<scalar>());
+        mpe[i] = mpe[i] + mpe0[i];
+    }
+
+    labelListList nps(nStick_);
+    forAll(nps, i)
+    {
+        Pstream::listCombineGather(nps[i], plusEqOp<label>());
+        nps[i] = nps[i] + nps0[i];
+    }
+
+    scalarListList mps(massStick_);
+    forAll(nps, i)
+    {
+        Pstream::listCombineGather(mps[i], plusEqOp<scalar>());
+        mps[i] = mps[i] + mps0[i];
+    }
+
+    if (outputByInjectorId_)
+    {
+        forAll(npe, i)
+        {
+            forAll (mpe[i], injId)
+            {
+                os  << "    Parcel fate: patch " <<  mesh_.boundary()[i].name()
+                    << " (number, mass)" << nl
+                    << "      - escape  (injector " << injIdToIndex_.toc()[injId]
+                    << " )  = " << npe[i][injId]
+                    << ", " << mpe[i][injId] << nl
+                    << "      - stick   (injector " << injIdToIndex_.toc()[injId]
+                    << " )  = " << nps[i][injId]
+                    << ", " << mps[i][injId] << nl;
+            }
+        }
+    }
+    else
+    {
+        forAll(npe, i)
+        {
+            os  << "    Parcel fate: walls (number, mass) "
+                << mesh_.boundary()[i].name() << nl
+                << "      - escape                      = "
+                << npe[i][0] << ", " << mpe[i][0] << nl
+                << "      - stick                       = "
+                << nps[i][0] << ", " << mps[i][0] << nl;
+        }
+    }
 
     if (this->writeTime())
     {
         this->setModelProperty("nEscape", npe);
+        nEscape_ = Zero;
         this->setModelProperty("massEscape", mpe);
+        massEscape_ = Zero;
         this->setModelProperty("nStick", nps);
+        nStick_ = Zero;
         this->setModelProperty("massStick", mps);
+        massStick_ = Zero;
     }
 }
 
diff --git a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/StandardWallInteraction/StandardWallInteraction.H b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/StandardWallInteraction/StandardWallInteraction.H
index c0ac3d6277..964216e72a 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/StandardWallInteraction/StandardWallInteraction.H
+++ b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/StandardWallInteraction/StandardWallInteraction.H
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2018 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -69,6 +69,9 @@ protected:
 
     // Protected data
 
+        // Reference to mesh
+        const fvMesh& mesh_;
+
         //- Interaction type
         typename PatchInteractionModel<CloudType>::interactionType
             interactionType_;
@@ -82,17 +85,23 @@ protected:
 
         // Counters for particle fates
 
-            //- Number of parcels escaped
-            label nEscape_;
+             //- Number of parcels escaped
+            List<List<label>> nEscape_;
 
             //- Mass of parcels escaped
-            scalar massEscape_;
+            List<List<scalar>> massEscape_;
 
             //- Number of parcels stuck to patches
-            label nStick_;
+            List<List<label>> nStick_;
 
             //- Mass of parcels stuck to patches
-            scalar massStick_;
+            List<List<scalar>> massStick_;
+
+            //- Flag to output escaped/mass particles sorted by injectorID
+            Switch outputByInjectorId_;
+
+            //- InjectorId to index map
+            Map<label> injIdToIndex_;
 
 
 public: