diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/0/U b/tutorials/multiphase/interFoam/ras/angledDuct/0/U
new file mode 100644
index 0000000000000000000000000000000000000000..d6561fa53e7188a34318499097525b79d6daae8c
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/0/U
@@ -0,0 +1,57 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class volVectorField;
+ object U;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions [0 1 -1 0 0 0 0];
+
+internalField uniform (0 0 0);
+
+boundaryField
+{
+ front
+ {
+ type fixedValue;
+ value uniform (0 0 0);
+ }
+ back
+ {
+ type fixedValue;
+ value uniform (0 0 0);
+ }
+ walls
+ {
+ type fixedValue;
+ value uniform (0 0 0);
+ }
+ porosityWall
+ {
+ type slip;
+ value uniform (0 0 0);
+ }
+ inlet
+ {
+ type flowRateInletVelocity;
+ massFlowRate constant 0.1;
+ value uniform (0 0 0);
+ }
+ outlet
+ {
+ type pressureInletOutletVelocity;
+ value uniform (0 0 0);
+ inletValue uniform (0 0 0);
+ }
+}
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/0/alpha.water b/tutorials/multiphase/interFoam/ras/angledDuct/0/alpha.water
new file mode 100644
index 0000000000000000000000000000000000000000..3efd7b5b5c88e7ba4aec574d62c2c5aa08c7e0ec
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/0/alpha.water
@@ -0,0 +1,53 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class volScalarField;
+ object alpha.water;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions [0 0 0 0 0 0 0];
+
+internalField uniform 0;
+
+boundaryField
+{
+
+ front
+ {
+ type zeroGradient;
+ }
+ back
+ {
+ type zeroGradient;
+ }
+ walls
+ {
+ type zeroGradient;
+ }
+ porosityWall
+ {
+ type zeroGradient;
+ }
+ inlet
+ {
+ type fixedValue;
+ value uniform 1;
+ }
+ outlet
+ {
+ type inletOutlet;
+ value $internalField;
+ inletValue $internalField;
+ }
+}
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/0/epsilon b/tutorials/multiphase/interFoam/ras/angledDuct/0/epsilon
new file mode 100644
index 0000000000000000000000000000000000000000..efa9bb4ab4a8dc528a8ea435187f45161a87a13d
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/0/epsilon
@@ -0,0 +1,59 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class volScalarField;
+ location "0";
+ object epsilon;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions [0 2 -3 0 0 0 0];
+
+internalField uniform 200;
+
+boundaryField
+{
+ front
+ {
+ type epsilonWallFunction;
+ value uniform 200;
+ }
+ back
+ {
+ type epsilonWallFunction;
+ value uniform 200;
+ }
+ walls
+ {
+ type epsilonWallFunction;
+ value uniform 200;
+ }
+ porosityWall
+ {
+ type epsilonWallFunction;
+ value uniform 200;
+ }
+ inlet
+ {
+ type turbulentMixingLengthDissipationRateInlet;
+ mixingLength 0.005;
+ value uniform 200;
+ }
+ outlet
+ {
+ type inletOutlet;
+ inletValue uniform 200;
+ value uniform 200;
+ }
+}
+
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/0/k b/tutorials/multiphase/interFoam/ras/angledDuct/0/k
new file mode 100644
index 0000000000000000000000000000000000000000..9ea687dc6d4c21a2b389074ebcf1b7b35b7e150b
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/0/k
@@ -0,0 +1,59 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class volScalarField;
+ location "0";
+ object k;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions [0 2 -2 0 0 0 0];
+
+internalField uniform 1;
+
+boundaryField
+{
+ front
+ {
+ type kqRWallFunction;
+ value uniform 1;
+ }
+ back
+ {
+ type kqRWallFunction;
+ value uniform 1;
+ }
+ walls
+ {
+ type kqRWallFunction;
+ value uniform 1;
+ }
+ porosityWall
+ {
+ type kqRWallFunction;
+ value uniform 1;
+ }
+ inlet
+ {
+ type turbulentIntensityKineticEnergyInlet;
+ intensity 0.05;
+ value uniform 1;
+ }
+ outlet
+ {
+ type inletOutlet;
+ inletValue uniform 1;
+ value uniform 1;
+ }
+}
+
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/0/nut b/tutorials/multiphase/interFoam/ras/angledDuct/0/nut
new file mode 100644
index 0000000000000000000000000000000000000000..043c71dde9571b38542121b575ca6f65a4b7f89d
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/0/nut
@@ -0,0 +1,57 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class volScalarField;
+ location "0";
+ object nut;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions [0 2 -1 0 0 0 0];
+
+internalField uniform 0;
+
+boundaryField
+{
+ front
+ {
+ type nutkWallFunction;
+ value uniform 0;
+ }
+ back
+ {
+ type nutkWallFunction;
+ value uniform 0;
+ }
+ walls
+ {
+ type nutkWallFunction;
+ value uniform 0;
+ }
+ porosityWall
+ {
+ type nutkWallFunction;
+ value uniform 0;
+ }
+ inlet
+ {
+ type calculated;
+ value uniform 0;
+ }
+ outlet
+ {
+ type calculated;
+ value uniform 0;
+ }
+}
+
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/0/p_rgh b/tutorials/multiphase/interFoam/ras/angledDuct/0/p_rgh
new file mode 100644
index 0000000000000000000000000000000000000000..94b19aeb38cc77dca73e8fd2fcf9d918eb340b00
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/0/p_rgh
@@ -0,0 +1,55 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class volScalarField;
+ object p_rgh;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions [1 -1 -2 0 0 0 0];
+
+internalField uniform 0;
+
+boundaryField
+{
+ front
+ {
+ type fixedFluxPressure;
+ value $internalField;
+ }
+ back
+ {
+ type fixedFluxPressure;
+ value $internalField;
+ }
+ walls
+ {
+ type fixedFluxPressure;
+ value $internalField;
+ }
+ porosityWall
+ {
+ type fixedFluxPressure;
+ value $internalField;
+ }
+ inlet
+ {
+ type fixedFluxPressure;
+ value $internalField;
+ }
+ outlet
+ {
+ type fixedValue;
+ value $internalField;
+ }
+}
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/Allrun b/tutorials/multiphase/interFoam/ras/angledDuct/Allrun
new file mode 100755
index 0000000000000000000000000000000000000000..c9fa98255753a468f44e925754d110ecf3d56332
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/Allrun
@@ -0,0 +1,10 @@
+#!/bin/sh
+cd ${0%/*} || exit 1 # run from this directory
+
+m4 constant/polyMesh/blockMeshDict.m4 > constant/polyMesh/blockMeshDict
+
+# Source tutorial run functions
+. $WM_PROJECT_DIR/bin/tools/RunFunctions
+
+runApplication blockMesh
+runApplication `getApplication`
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/constant/RASProperties b/tutorials/multiphase/interFoam/ras/angledDuct/constant/RASProperties
new file mode 100644
index 0000000000000000000000000000000000000000..d964d3c86279abddc56f08cb6dd09ff387094fa7
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/constant/RASProperties
@@ -0,0 +1,25 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class dictionary;
+ location "constant";
+ object RASProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+RASModel kEpsilon;
+
+turbulence on;
+
+printCoeffs on;
+
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/constant/g b/tutorials/multiphase/interFoam/ras/angledDuct/constant/g
new file mode 100644
index 0000000000000000000000000000000000000000..07c168261b7fcb1c1f2e7a31164669c4f2857cd0
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/constant/g
@@ -0,0 +1,22 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class uniformDimensionedVectorField;
+ location "constant";
+ object g;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions [0 1 -2 0 0 0 0];
+value ( 0 -9.81 0 );
+
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/constant/polyMesh/blockMeshDict.m4 b/tutorials/multiphase/interFoam/ras/angledDuct/constant/polyMesh/blockMeshDict.m4
new file mode 100644
index 0000000000000000000000000000000000000000..3272a9437fa311ecb8f7a364710ca7bc05f78ca0
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/constant/polyMesh/blockMeshDict.m4
@@ -0,0 +1,189 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ `format' ascii;
+ class dictionary;
+ object blockMeshDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+// block definition for a porosity with an angled inlet/outlet
+// the porosity is not aligned with the main axes
+//
+dnl> -----------------------------------------------------------------
+dnl> <STANDARD DEFINTIONS>
+dnl>
+changecom(//)changequote([,]) dnl>
+define(calc, [esyscmd(perl -e 'print ($1)')]) dnl>
+define(VCOUNT, 0) dnl>
+define(vlabel, [[// ]pt VCOUNT ($1) define($1, VCOUNT)define([VCOUNT], incr(VCOUNT))]) dnl>
+dnl>
+define(hex2D, hex ($1b $2b $3b $4b $1f $2f $3f $4f)) dnl>
+define(quad2D, ($1f $1b $2b $2f)) dnl>
+define(frontQuad, ($1f $2f $3f $4f)) dnl>
+define(backQuad, ($4b $3b $2b $1b)) dnl>
+dnl>
+dnl> </STANDARD DEFINTIONS>
+dnl> -----------------------------------------------------------------
+dnl>
+define(ncells, 20) dnl>
+define(ninlet, 15) dnl>
+define(nporo, 20) dnl>
+define(noutlet, 20) dnl>
+dnl>
+define(x0,0) dnl>
+define(y0,0) dnl>
+define(y0,0) dnl>
+define(Cos,0.7071067812) dnl> == cos(45)
+define(Sin,0.7071067812) dnl> == sin(45)
+dnl>
+define(width,50) dnl>
+define(zBack,calc(-width/2)) dnl>
+define(zFront,calc(width/2)) dnl>
+define(leninlet,150)dnl>
+define(lenporo,100)dnl>
+define(lenoutlet,100)dnl>
+dnl>
+define(xhyp,calc(Sin*width)) dnl>
+define(yhyp,calc(Cos*width)) dnl>
+define(xinlet,leninlet)dnl>
+define(xporo,calc(Cos*lenporo)) dnl>
+define(yporo,calc(Sin*lenporo)) dnl>
+define(xoutlet,calc(xporo + Cos*lenoutlet)) dnl>
+define(youtlet,calc(yporo + Sin*lenoutlet)) dnl>
+dnl>
+
+convertToMeters 0.001;
+
+vertices
+(
+ // inlet region
+ ( -xinlet y0 zBack ) vlabel(in1b)
+ ( -xinlet yhyp zBack ) vlabel(in2b)
+ ( -xinlet y0 zFront ) vlabel(in1f)
+ ( -xinlet yhyp zFront ) vlabel(in2f)
+
+ // join inlet->outlet
+ ( x0 y0 zBack ) vlabel(join1b)
+ ( -xhyp yhyp zBack ) vlabel(join2b)
+ ( x0 y0 zFront ) vlabel(join1f)
+ ( -xhyp yhyp zFront ) vlabel(join2f)
+
+ // porosity ends ->outlet
+ ( xporo yporo zBack ) vlabel(poro1b)
+ ( calc(xporo - xhyp) calc(yporo + yhyp) zBack ) vlabel(poro2b)
+ ( xporo yporo zFront ) vlabel(poro1f)
+ ( calc(xporo - xhyp) calc(yporo + yhyp) zFront ) vlabel(poro2f)
+
+ // outlet
+ ( xoutlet youtlet zBack ) vlabel(out1b)
+ ( calc(xoutlet - xhyp) calc(youtlet + yhyp) zBack ) vlabel(out2b)
+ ( xoutlet youtlet zFront ) vlabel(out1f)
+ ( calc(xoutlet - xhyp) calc(youtlet + yhyp) zFront ) vlabel(out2f)
+);
+
+blocks
+(
+ // inlet block
+ hex2D(in1, join1, join2, in2)
+ inlet ( ninlet ncells ncells ) simpleGrading (1 1 1)
+
+ // porosity block
+ hex2D(join1, poro1, poro2, join2)
+ porosity ( nporo ncells ncells ) simpleGrading (1 1 1)
+
+ // outlet block
+ hex2D(poro1, out1, out2, poro2)
+ outlet ( noutlet ncells ncells ) simpleGrading (1 1 1)
+);
+
+edges
+(
+);
+
+boundary
+(
+ // is there no way of defining all my 'defaultFaces' to be 'wall'?
+ front
+ {
+ type wall;
+ faces
+ (
+ // inlet block
+ frontQuad(in1, join1, join2, in2)
+ // outlet block
+ frontQuad(poro1, out1, out2, poro2)
+ );
+ }
+
+ back
+ {
+ type wall;
+ faces
+ (
+ // inlet block
+ backQuad(in1, join1, join2, in2)
+ // outlet block
+ backQuad(poro1, out1, out2, poro2)
+ );
+ }
+
+ walls
+ {
+ type wall;
+ faces
+ (
+ // inlet block
+ quad2D(in1, join1)
+ quad2D(join2, in2)
+ // outlet block
+ quad2D(poro1, out1)
+ quad2D(out2, poro2)
+ );
+ }
+
+ porosityWall
+ {
+ type wall;
+ faces
+ (
+ // porosity block
+ frontQuad(join1, poro1, poro2, join2)
+ // porosity block
+ backQuad(join1, poro1, poro2, join2)
+ // porosity block
+ quad2D(join1, poro1)
+ quad2D(poro2, join2)
+ );
+ }
+
+ inlet
+ {
+ type patch;
+ faces
+ (
+ quad2D(in2, in1)
+ );
+ }
+
+ outlet
+ {
+ type patch;
+ faces
+ (
+ quad2D(out2, out1)
+ );
+ }
+);
+
+mergePatchPairs
+(
+);
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/constant/polyMesh/boundary b/tutorials/multiphase/interFoam/ras/angledDuct/constant/polyMesh/boundary
new file mode 100644
index 0000000000000000000000000000000000000000..4ff78a49cbb82f7d888e3597c28ea34398bf14ad
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/constant/polyMesh/boundary
@@ -0,0 +1,62 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class polyBoundaryMesh;
+ location "constant/polyMesh";
+ object boundary;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+6
+(
+ front
+ {
+ type wall;
+ inGroups 1(wall);
+ nFaces 700;
+ startFace 63400;
+ }
+ back
+ {
+ type wall;
+ inGroups 1(wall);
+ nFaces 700;
+ startFace 64100;
+ }
+ walls
+ {
+ type wall;
+ inGroups 1(wall);
+ nFaces 1400;
+ startFace 64800;
+ }
+ porosityWall
+ {
+ type wall;
+ inGroups 1(wall);
+ nFaces 1600;
+ startFace 66200;
+ }
+ inlet
+ {
+ type patch;
+ nFaces 400;
+ startFace 67800;
+ }
+ outlet
+ {
+ type patch;
+ nFaces 400;
+ startFace 68200;
+ }
+)
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/constant/transportProperties b/tutorials/multiphase/interFoam/ras/angledDuct/constant/transportProperties
new file mode 100644
index 0000000000000000000000000000000000000000..2f6fad860b85b8b36623706488e77cf18f215163
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/constant/transportProperties
@@ -0,0 +1,67 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class dictionary;
+ location "constant";
+ object transportProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+phases (water air);
+
+water
+{
+ transportModel Newtonian;
+ nu nu [ 0 2 -1 0 0 0 0 ] 1e-06;
+ rho rho [ 1 -3 0 0 0 0 0 ] 1000;
+ CrossPowerLawCoeffs
+ {
+ nu0 nu0 [ 0 2 -1 0 0 0 0 ] 1e-06;
+ nuInf nuInf [ 0 2 -1 0 0 0 0 ] 1e-06;
+ m m [ 0 0 1 0 0 0 0 ] 1;
+ n n [ 0 0 0 0 0 0 0 ] 0;
+ }
+
+ BirdCarreauCoeffs
+ {
+ nu0 nu0 [ 0 2 -1 0 0 0 0 ] 0.0142515;
+ nuInf nuInf [ 0 2 -1 0 0 0 0 ] 1e-06;
+ k k [ 0 0 1 0 0 0 0 ] 99.6;
+ n n [ 0 0 0 0 0 0 0 ] 0.1003;
+ }
+}
+
+air
+{
+ transportModel Newtonian;
+ nu nu [ 0 2 -1 0 0 0 0 ] 1.48e-05;
+ rho rho [ 1 -3 0 0 0 0 0 ] 1;
+ CrossPowerLawCoeffs
+ {
+ nu0 nu0 [ 0 2 -1 0 0 0 0 ] 1e-06;
+ nuInf nuInf [ 0 2 -1 0 0 0 0 ] 1e-06;
+ m m [ 0 0 1 0 0 0 0 ] 1;
+ n n [ 0 0 0 0 0 0 0 ] 0;
+ }
+
+ BirdCarreauCoeffs
+ {
+ nu0 nu0 [ 0 2 -1 0 0 0 0 ] 0.0142515;
+ nuInf nuInf [ 0 2 -1 0 0 0 0 ] 1e-06;
+ k k [ 0 0 1 0 0 0 0 ] 99.6;
+ n n [ 0 0 0 0 0 0 0 ] 0.1003;
+ }
+}
+
+sigma sigma [ 1 0 -2 0 0 0 0 ] 0.07;
+
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/constant/turbulenceProperties b/tutorials/multiphase/interFoam/ras/angledDuct/constant/turbulenceProperties
new file mode 100644
index 0000000000000000000000000000000000000000..fa68b2620eea228ceb82f59a72a94e09b87bbc6a
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/constant/turbulenceProperties
@@ -0,0 +1,21 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class dictionary;
+ location "constant";
+ object turbulenceProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+simulationType RASModel;
+
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/system/controlDict b/tutorials/multiphase/interFoam/ras/angledDuct/system/controlDict
new file mode 100644
index 0000000000000000000000000000000000000000..b0244d5a61d272cb1c656c2f42234144e392fa8e
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/system/controlDict
@@ -0,0 +1,56 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class dictionary;
+ location "system";
+ object controlDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+application interFoam;
+
+startFrom startTime;
+
+startTime 0;
+
+stopAt endTime;
+
+endTime 10;
+
+deltaT 0.001;
+
+writeControl adjustableRunTime;
+
+writeInterval 0.1;
+
+purgeWrite 0;
+
+writeFormat ascii;
+
+writePrecision 6;
+
+writeCompression uncompressed;
+
+timeFormat general;
+
+timePrecision 6;
+
+runTimeModifiable yes;
+
+adjustTimeStep on;
+
+maxCo 1;
+maxAlphaCo 1;
+
+maxDeltaT 1;
+
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/system/fvOptions b/tutorials/multiphase/interFoam/ras/angledDuct/system/fvOptions
new file mode 100644
index 0000000000000000000000000000000000000000..7352696f07f54b615cf6c704cf48b83b140a5df2
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/system/fvOptions
@@ -0,0 +1,50 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class dictionary;
+ location "system";
+ object fvOptions;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+porosity1
+{
+ type explicitPorositySource;
+ active true;
+ selectionMode cellZone;
+ cellZone porosity;
+
+ explicitPorositySourceCoeffs
+ {
+ type DarcyForchheimer;
+
+ DarcyForchheimerCoeffs
+ {
+ d d [0 -2 0 0 0 0 0] (2e8 -1000 -1000);
+ f f [0 -1 0 0 0 0 0] (0 0 0);
+
+ coordinateSystem
+ {
+ type cartesian;
+ origin (0 0 0);
+ coordinateRotation
+ {
+ type axesRotation;
+ e1 (0.70710678 0.70710678 0);
+ e2 (0 0 1);
+ }
+ }
+ }
+ }
+}
+
+
+//************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/system/fvSchemes b/tutorials/multiphase/interFoam/ras/angledDuct/system/fvSchemes
new file mode 100644
index 0000000000000000000000000000000000000000..39485cf7291e7ea3e2b0fd7e404ba8707ed88000
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/system/fvSchemes
@@ -0,0 +1,62 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class dictionary;
+ location "system";
+ object fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+ddtSchemes
+{
+ default Euler;
+}
+
+gradSchemes
+{
+ default Gauss linear;
+}
+
+divSchemes
+{
+ div(rhoPhi,U) Gauss upwind;
+ div(phi,alpha) Gauss vanLeer;
+ div(phirb,alpha) Gauss linear;
+ div(phi,k) Gauss upwind;
+ div(phi,epsilon) Gauss upwind;
+ div((muEff*dev(T(grad(U))))) Gauss linear;
+}
+
+laplacianSchemes
+{
+ default Gauss linear corrected;
+}
+
+interpolationSchemes
+{
+ default linear;
+}
+
+snGradSchemes
+{
+ default corrected;
+}
+
+fluxRequired
+{
+ default no;
+ p_rgh;
+ pcorr;
+ alpha.water;
+}
+
+
+// ************************************************************************* //
diff --git a/tutorials/multiphase/interFoam/ras/angledDuct/system/fvSolution b/tutorials/multiphase/interFoam/ras/angledDuct/system/fvSolution
new file mode 100644
index 0000000000000000000000000000000000000000..b33c4085f4694d5cf02541a519389ae64ab04dba
--- /dev/null
+++ b/tutorials/multiphase/interFoam/ras/angledDuct/system/fvSolution
@@ -0,0 +1,108 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| ========= | |
+| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
+| \\ / O peration | Version: 2.3.x |
+| \\ / A nd | Web: www.OpenFOAM.org |
+| \\/ M anipulation | |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+ version 2.0;
+ format ascii;
+ class dictionary;
+ location "system";
+ object fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+solvers
+{
+ "alpha.water.*"
+ {
+ nAlphaCorr 2;
+ nAlphaSubCycles 1;
+ cAlpha 1;
+
+ MULESCorr yes;
+ nLimiterIter 3;
+
+ solver smoothSolver;
+ smoother symGaussSeidel;
+ tolerance 1e-8;
+ relTol 0;
+ }
+
+ pcorr
+ {
+ solver PCG;
+ preconditioner
+ {
+ preconditioner GAMG;
+ tolerance 1e-5;
+ relTol 0;
+ smoother GaussSeidel;
+ nPreSweeps 0;
+ nPostSweeps 2;
+ nFinestSweeps 2;
+ cacheAgglomeration true;
+ nCellsInCoarsestLevel 10;
+ agglomerator faceAreaPair;
+ mergeLevels 1;
+ }
+ tolerance 1e-5;
+ relTol 0;
+ maxIter 50;
+ }
+
+ p_rgh
+ {
+ solver GAMG;
+ tolerance 5e-9;
+ relTol 0.01;
+
+ smoother GaussSeidel;
+ nPreSweeps 0;
+ nPostSweeps 2;
+
+ cacheAgglomeration true;
+
+ nCellsInCoarsestLevel 10;
+ agglomerator faceAreaPair;
+ mergeLevels 1;
+
+ maxIter 50;
+ };
+
+ p_rghFinal
+ {
+ $p_rgh;
+ relTol 0;
+ }
+
+ "(U|k|epsilon).*"
+ {
+ solver smoothSolver;
+ smoother symGaussSeidel;
+ tolerance 1e-06;
+ relTol 0;
+ minIter 1;
+ }
+}
+
+PIMPLE
+{
+ momentumPredictor no;
+ nOuterCorrectors 1;
+ nCorrectors 3;
+ nNonOrthogonalCorrectors 0;
+}
+
+relaxationFactors
+{
+ equations
+ {
+ ".*" 1;
+ }
+}
+
+// ************************************************************************* //