Domain and Analysis type
An O-type domain was selected as the flow domain around the cylinder. The domain was 15D
in the radial direction and πD
in the span-wise direction (see Fig.2.). For this study a structured hexahedral mesh was created with the open source ‘BlockMesh-tool’. The grid nodes are distributed by a geometric grading in the radial direction. Further, the nodes are clustered near the stagnation point and in the wake region along the stream-wise direction. The mesh is based on a y-plus (y+
) criterion of y+<1
in the radial direction. The complete details of the mesh are listed in the following table:
Mesh and Element types :
Mesh type |
Cells in radial |
Cells in circumferential |
Cells in spanwise |
Number of nodes |
Type |
blockMesh |
165 |
204 |
34 |
1144440 |
3D hexahedral |