[ArslanOZCAN]

Hi;

Is it possible to create a mesh of an axial fan, which has nonhomogeneous blade passage width in TurboGrid? Image of the fan is given in the attachment. Also for the pre-processing, CFX requires only one blade geometry for each blade stage and the is no option to load a blade stage with different blade passage widths.

If anyone has experienced this before, please describe me how to do.

Thank you.

[Opaque]

My advice is not to think of each blade independently. From the picture, you have 5 pairs of blades (or blade sets).

When setting up the case, you must load at least one pair (or set) of blades; otherwise, your numerical model does not represent the physics of the fan.

In turbogrid, you should be able to mesh both blades in the pair in one go. Unfortunately, I cannot advice further on this.

Hope the above helps,

[turbo]

Try to treat one of the pair as a splitter blade in BladeGen to export to TurboGrid.

[Qeredamos]

Same problem, I want to calculate total efficiency coefficient for an axial compressor, but with one damaged blade (nick, dent and etc.) in a row. In quick help of TurboGrid at Chapter 10: TurboGrid I find this:
"If you want a given bladerow to contain more than one blade geometry (for example, main blades with splitter blades), create one ExportPoints feature for each unique blade in the bladerow, with each ExportPoints feature based on the same FlowPath and given the same Bladerow Number. When more than one ExportPoints feature matches the FlowPath and Bladerow Number criteria set in the Turbo Mesh cell properties, ANSYS TurboGrid will create a bladerow with splitter blades."
I will try to do this. Then I will write my results here.

[Qeredamos]

In my case, this suggestion doesn't work. I asked about it some experts in this sphere, they told me try to make a mesh for each blade in ICEM CFD. Its too difficult for me, because I never worked in this module. I did a as you can see blade on the top got defect. And then I mesh this geometry like in this video https://www.youtube.com/watch?v=Xu8rJGOFWok. Unforhtunaly, Cfx doesn't see blades. I cant understand why. Tomorow i will try to fix it, then i will reply.

[turbo]

Originally Posted by Qeredamos

In my case, this suggestion doesn't work. I asked about it some experts in this sphere, they told me try to make a mesh for each blade in ICEM CFD. Its too difficult for me, because I never worked in this module. I did a as you can see blade on the top got defect. And then I mesh this geometry like in this video https://www.youtube.com/watch?v=Xu8rJGOFWok. Unforhtunaly, Cfx doesn't see blades. I cant understand why. Tomorow i will try to fix it, then i will reply.

Your problem is not the same as the original post. The "splitter" that I mentioned and the Turbogrid says is additional blades in the tangential direction only. Your case needs to build a whole number of blade passages as one solid.