Bladegen Data Import wizard hub surface problem

mbabagiray · June 14, 2023, 08:02

Hey everyone,

I am working on turbine blade optimization for a specific flow rate. I have the CAD design of the turbine runner attached below(1), but I wanted to convert it into the bladegen by using the data import wizard. I attached the steps that I have taken in the data import wizard, I selected hub and shroud curves and the meridional profile is created. (No problem until here). However, as you see in picture 7, I want to have the hub surface as a flat surface as depicted in the picture's red lines without any changes in the blade shape. I mean everything is correct except the flow path starting point. It should be perpendicular to the blades. Do you have any suggestions on how to do it?

1) https://ibb.co/gzjtKGv
2) https://ibb.co/RSSRHJF
3) https://ibb.co/yXXtzFz
4) https://ibb.co/QMNTD04
5) https://ibb.co/LSTWZF8
6) https://ibb.co/G25dsFM
7) https://ibb.co/wpL0J81

Thank you
Mustafa

zacko · June 16, 2023, 03:38

You can also attach images directly into your post. Makes things easier and we don't have problems in the future, that the link expires or so.

zacko · June 21, 2023, 03:34

It seems that your meridional profile is not correct at the hub.
If you want to have a straight hub like in Image 1, you need to draw a straight line in your meridional profile.

June 14, 2023, 08:02	Bladegen Data Import wizard hub surface problem	#1
mbabagiray New Member babagiray Join Date: Jun 2023 Posts: 2 Rep Power: 0	Hey everyone, I am working on turbine blade optimization for a specific flow rate. I have the CAD design of the turbine runner attached below(1), but I wanted to convert it into the bladegen by using the data import wizard. I attached the steps that I have taken in the data import wizard, I selected hub and shroud curves and the meridional profile is created. (No problem until here). However, as you see in picture 7, I want to have the hub surface as a flat surface as depicted in the picture's red lines without any changes in the blade shape. I mean everything is correct except the flow path starting point. It should be perpendicular to the blades. Do you have any suggestions on how to do it? 1) https://ibb.co/gzjtKGv 2) https://ibb.co/RSSRHJF 3) https://ibb.co/yXXtzFz 4) https://ibb.co/QMNTD04 5) https://ibb.co/LSTWZF8 6) https://ibb.co/G25dsFM 7) https://ibb.co/wpL0J81 Thank you Mustafa

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June 16, 2023, 03:38		#2
zacko Senior Member Daniel Join Date: Feb 2017 Location: Germany Posts: 158 Rep Power: 9	You can also attach images directly into your post. Makes things easier and we don't have problems in the future, that the link expires or so.

June 21, 2023, 03:34		#3
zacko Senior Member Daniel Join Date: Feb 2017 Location: Germany Posts: 158 Rep Power: 9	It seems that your meridional profile is not correct at the hub. If you want to have a straight hub like in Image 1, you need to draw a straight line in your meridional profile.