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OMNIS/Autogrid/Turbo: Poor meridonal lines course 3D-Mesh

Zuriko

Hello together,

I am struggeling with some merdional lines in my bypass-configuration which I've created with OMNIS/Autogrid and Numeca Autogrid5 12.2 . In both cases there's the same result. I've attached some pictures:

It seemse that the node points on the hub have an different expansion ration in streamwise direction. Also the curvature is getting less in the area of z-cst-lines.

Third picture is from below:

You can see that the streamwise expansion ration of the line on the Spinner Cone (Hub) is higher compared to the meridonal lines in the channel. Due to that the channel lines make that high curvature when getting closer to the Hub curve.

Is there a possibility to adjust the streamwise expansion ratio of the Hub node points?

Best regards and thanks a lot in advance!

  • domen
    +1

    Hi, is the spinner going to radius = 0?

    In general I'd say that if you add a few z-constant lines (disable the option "B2B control), the flow paths should be more straight. Does the blade have a fillet?

  • Zuriko
    0 in reply to domen

    Hello domen,

    No the Spinner is going to radius=5mm. The blade does not have a fillet.

    I'll try disabling the B2B control option.

    Thanks a lot!

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