[sisi]

I am having some trouble with gmshToFOAM. So far the OpenFOAM "cavity" tutorial with the blockMesh utility works fine. Now I would like to solve the "cavity" problem using an unstructured mesh created by Gmesh:

lc = 0.01;
tc = 0.001; // top corners
bc = 0.0025; // bottom corners
 
Point(1) = { 0, 0, 0, lc };
Point(2) = { 0.05, 0, 0, lc };
Point(3) = { 0.1, 0, 0, lc };
Point(4) = { 0.1, 0.05, 0, lc };
Point(5) = { 0.1, 0.1, 0, tc };
Point(6) = { 0.05, 0.1, 0, lc };
Point(7) = { 0, 0.1, 0, tc };
Point(8) = { 0, 0.05, 0, lc };
 
Line(1) = {1,2};  
Line(2) = {2,3};  
Line(3) = {3,4};  
Line(4) = {4,5};  
Line(5) = {5,6};  
Line(6) = {6,7};  
Line(7) = {7,8};  
Line(8) = {8,1};  
 
Line Loop (9) = {1:8};  
 
Plane Surface(1) = {9};  
 
Extrude {0, 0, 0.1} {
Surface{1};
Layers{1};
Recombine;
}
 
Physical Surface("front") = {46,50};
Physical Surface("back") = {34,30};
Physical Surface("bottom") = {22,26};
Physical Surface("left") = {1};
Physical Surface("top") = {42,38};
Physical Surface("right") = {51};
 
Physical Volume("internal") = {1};
 
Mesh 3;
Save "cavity.msh";

I am getting the following terminal outputs:

$ gmshToFoam cavity.msh

...

Create time

Starting to read mesh format at line 2
Read format version 2.2  ascii 0

Starting to read physical names at line 5
Physical names:7
    Surface 1    front
    Surface 2    back
    Surface 3    bottom
    Surface 4    left
    Surface 5    top
    Surface 6    right
    Volume 7    internal

Starting to read points at line 15
Vertices to be read:652
Vertices read:652

Starting to read cells at line 670
Cells to be read:1806

Mapping region 4 to Foam patch 0
Mapping region 6 to Foam patch 1
Mapping region 3 to Foam patch 2
Mapping region 2 to Foam patch 3
Mapping region 5 to Foam patch 4
Mapping region 1 to Foam patch 5
Mapping region 7 to Foam cellZone 0
Cells:
    total:578
    hex  :0
    prism:578
    pyr  :0
    tet  :0

CellZones:
Zone    Size
    0    578

Skipping tag  at line 2479
Patch 0 gets name left
Patch 1 gets name right
Patch 2 gets name bottom
Patch 3 gets name back
Patch 4 gets name top
Patch 5 gets name front

--> FOAM Warning :
    From function polyMesh::polyMesh(... construct from shapes...)
    in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 627
    Found 1228 undefined faces in mesh; adding to default patch.
Finding faces of patch 0
Finding faces of patch 1
Finding faces of patch 2
Finding faces of patch 3
Finding faces of patch 4
Finding faces of patch 5

FaceZones:
Zone    Size

Writing zone 0 to cellZone internal and cellSet
End

and

$ icoFoam

Create time

Create mesh for time = 0

Reading transportProperties

Reading field p



--> FOAM FATAL IO ERROR:
Cannot find patchField entry for left

file: ~/.../run/tutorials/incompressible/icoFoam/cavity/0/p.boundaryField from line 25 to line 35.

    From function GeometricField<Type, PatchField, GeoMesh>::GeometricBoundaryField::readField(const DimensionedField<Type, GeoMesh>&, const dictionary&)
    in file ~/OpenFOAM/OpenFOAM-2.3.0/src/OpenFOAM/lnInclude/GeometricBoundaryField.C at line 209.

FOAM exiting

Any ideas how to solve this problem?