[cfd4res]

I managed to solve the problem by myself. So I'm posting the code in case someone needs to create a pipe bend using extrude Mesh.

The pipe looks as the image attached.
The pipe lengths are in inches.

x axis is perpendicular to the web page coming towards you.
x,y,z axis intersect at the center of the circular cross section.
image.JPG

The extrudeMeshDict code is as follows.

FoamFile
{
version 2.0;
format ascii;
class dictionary;
object extrudeProperties;
}

constructFrom mesh;
sourceCase "$FOAM_CASE";

sourcePatches (outlet);

extrudeModel sector;

nLayers 10; //number of layers in the pipe bend
expansionRatio 1.0; //expansion of the cross section

sectorCoeffs
{
axisPt (0 2.6824 0.146558); //conversion of inches to meters
axis (1 0 0); //apparently this is the axis
angle 90;
}


flipNormals false;
mergeFaces false;

Type blockMesh and then extrudeMesh. You should see the mesh in paraFoam