How to handle small fillets in the geometry

afzaal · February 26, 2016, 13:53

Hello everyone, I have a geometry in which there is a small fillet in the shroud. When i import the geometry in AutoGrid5, it changes the geometry itself and i am not able to fix this problem. can anybody tell me some solution to this problem. I am attaching the figure file and excel data file, to exactly understand the nature of trouble i am recently facing. Thanks everyone

Hamidzoka · February 27, 2016, 00:06

Dear Afzaal;
Thanks for your additional massage to me in private.
As I reviewed your files attached, you main problem is that shroud curve possesses a quite dense distribution of points from inlet to the convex region which forms somehow a throat (you have shown this region in the attached pic with an arrow). But after this curve, shroud turns into a simple line and you have only 2 points for this region. Since the Numeca uses spline for defining the curves, such an uneven distribution of points causes unrealistic shapes. The solution is to add some points on linear part of the shroud and place them as close as possible to the curved part. This will solve your problem.

Please send me the feedback.

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February 27, 2016, 00:06		#2
Hamidzoka Senior Member Hamid Zoka Join Date: Nov 2009 Posts: 282 Rep Power: 18	Dear Afzaal; Thanks for your additional massage to me in private. As I reviewed your files attached, you main problem is that shroud curve possesses a quite dense distribution of points from inlet to the convex region which forms somehow a throat (you have shown this region in the attached pic with an arrow). But after this curve, shroud turns into a simple line and you have only 2 points for this region. Since the Numeca uses spline for defining the curves, such an uneven distribution of points causes unrealistic shapes. The solution is to add some points on linear part of the shroud and place them as close as possible to the curved part. This will solve your problem. Please send me the feedback.