What has happend to the edges of domain
Hi,
I use rhoSimpleFoam to simulate a blade of gas turbine. This is the picture of the simulation result. http://user.qzone.qq.com/76247914/ph...FlyYK9YkAAA!!/ What has happend to the edges of domain? Is there something wrong with the cyclic boundary conditions? 

checkMesh
checkMesh
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create polyMesh for time = constant Time = constant Mesh stats points: 160248 faces: 454912 internal faces: 429824 cells: 147456 boundary patches: 6 point zones: 0 face zones: 0 cell zones: 0 Number of cells of each type: hexahedra: 147456 prisms: 0 wedges: 0 pyramids: 0 tet wedges: 0 tetrahedra: 0 polyhedra: 0 Checking topology... Boundary definition OK. Point usage OK. Upper triangular ordering OK. Face vertices OK. Number of regions: 1 (OK). Checking patch topology for multiply connected surfaces ... Patch Faces Points Surface topology row_1_BLADE 6912 7128 ok (nonclosed singly connected) row_1_SHROUD 4608 4856 ok (nonclosed singly connected) row_1_HUB 4608 4856 ok (nonclosed singly connected) row_1_OUTFLOW 1536 1617 ok (nonclosed singly connected) row_1_INFLOW 768 825 ok (nonclosed singly connected) row_1_PER 6656 6930 ok (nonclosed singly connected) Checking geometry... This is a 3D mesh Overall domain bounding box (0.6063716664 0.09400876493 0.06) (0.8094251252 0.05889179552 0.163938279) Mesh (nonempty) directions (1 1 1) Mesh (nonempty, nonwedge) dimensions 3 Boundary openness (2.53523191331e19 3.19783473277e19 4.97898165194e19) Threshold = 1e06 OK. Max cell openness = 1.90379145707e15 OK. Max aspect ratio = 335.077993397 OK. Minumum face area = 8.94726575451e10. Maximum face area = 9.81471952282e05. Face area magnitudes OK. Min volume = 5.60997898251e14. Max volume = 2.49818970804e07. Total volume = 0.00251046768668. Cell volumes OK. Mesh nonorthogonality Max: 50.1995248971 average: 14.3396737008 Threshold = 70 Nonorthogonality check OK. Face pyramids OK. Max skewness = 1.5808312121 OK. Mesh OK. End 
Sorry, I can't see any pictures of your domain ...

This is the picture
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This is the picture

Yes this looks strange. Can you provide a picture of the actual mesh?

this is grid
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this is grid

shroud grid
1 Attachment(s)
this is shroud grid

From my experience with interFoam I can tell that sometimes slightly skewed hex cells give rise to problems with the pressure.
This may be an explanation for the pressure field in proximity of the bend. Using corrected schemes for snGrad solved the problem within interFoam. Maybe you even have to increase the value of nonOrthogonalCorrectors, which triggers the number of correction loops within the solution of the momentum equation. But this is not explaining the pressure region at the outlet. 
decoupling problem
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Is this decoupling problem?

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And what happend to your domain in the first picture? 
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I changed relTol from 0 to 0.05 in fvSolution, than the first picture is the result. I found that there are some fluctuating of pressure near the outlet boundary. I think that something wrong with pressure and velocity. 
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