Import .igs in Autogrid5
Dears,
I am a beginner of Autogrid and I tried to import my geometry but, obviously, I found some difficulties. I understand that intersections between hub/blade/shroud are necessary but I am not able to select the right surfaces to define my blade. I mean, I discovered that if I use some tools to create surfaces ( like revolve, fill) in CAD, these surfaces will not recognized. is it weird? which characteristics are necessary to recognize a blade correctly? Please, comment. everything should be useful for a beginner like me. Thanks |
Hi,
I could not understand your question. Usually any CAD should do the job for you. |
Hi,
I had troubles importing geometry from .igs . Are there constraints for the import file in autogrid5? what exactly does ''bad streamwise orientation'' error mean when i am setting leading and trailing edge? how can I solve discontinuity issues in the channel without change the geometry? I would like to keep the nose of the runner but i do not know how to describe the hub-line. probably this old pic can help to understand what I am saying http://tinypic.com/r/2nt8rpv/5 Thanks |
Hi,
importing .igs file to autogrid is not always successful. regarding the .igs model following tips come to my mind: - separate suction and pressure sides so that LE and TE lines can be distinguished. - no manufacturing details such as fillets, roots, tip cavities, cooling passages and cooling holes should exist in your model. - surfaces of suction side and pressure side should be smooth enough - endwalls can be separately defined through hub and shroud curves and should not be neccessarily included in .igs model. |
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