In need of guidance to optimize snappyHexMeshDict for a rotor segment
Hello,
I am trying to make snappyHexMesh for the following rotor segment with the following patches: https://www.dropbox.com/s/im59eo76bc...tches.png?dl=0 However, my current snappyHM setup: https://www.dropbox.com/s/ggjqomezqn...xMeshDict?dl=0 is not OK cause result mesh: https://www.dropbox.com/s/1uotklsyxb...0mesh.png?dl=0 is not suitable for simulation. How should I modify snappyHM setup to achieve smth like this: https://www.dropbox.com/s/b8ipmjgztx...0mesh.png?dl=0 ie I need more homogeneous mesh distribution especially at outlet and periodic faces. Thank you for any help! |
looks like blockMesh is important, especially for rotating geometry. I suppose that non-homogeneous mesh on radiused surfaces is because of quadratic blocks in blockMesh. I am wondering: is it possible to make blockMesh using cylinder (sector of cylinder) like this: https://www.dropbox.com/s/fuo4wdq116gmgo2/Cyl1?dl=0 instead of quadratic block?
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Hello ZanJa,
See the link below where they have split up the domain for application in turbines and diffusers (hybraulic machinery) using blockMesh. http://openfoamwiki.net/index.php/Si...nical_diffuser See in particular section 1.6. Note that they have used the utilty m4 to generate the blockMeshdict. http://www.gnu.org/doc/doc.html Good luck, Daniel |
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