ask for help :about cfx turbogrid

captain · March 5, 2013, 01:34

i want to form a stator .but when i put in the profile ,it gives a warn:
"WARNING
First blade profile is not defined as a hub tip and is too far (0.0945101 of span) from the
hub for reliable surface intersection.Surface extension factor will be adjusted accordingly, however application may become unreliable.
ERROR
Last blade profile is not defined as a shroud tip and is too far (0.858225 of span) from the
shroud for reliable intersection. Must be at least 0.858235 of span. "

i tried some ways ,but can't solve it .Can anybody help me about this question ?thank you！

Veronique Pe · June 13, 2014, 08:14

Hi,

I think your blade profile at 0% of span is not corresponding to yourhub profile.
Do you try to redefine the hub profile in using the blade profile at 0% of span coordinates? and use 100% of span blade profile coordinates to redefine the shroud coordinates? (plus coordinates to define inlet and outlet domains)
I think my problem is similar:
Surfaces Blade_1_tr_low and Blade_1_sh_tip_rot do not intersect.

Keep me in the loop

Ahmed Saeed Mansour · August 13, 2016, 18:56

How can I do this or have you solved it?

michaelsinaga · April 11, 2020, 08:05

hey, i know its been a while but have you solved the problem ? i kinda have the same problem. thanks

Ahmed Saeed Mansour · April 13, 2020, 23:33

Hello dear Michael, it depend on the way you generate the flow path. Have you watched my tutorials about turbomachinery? I avoided these kinda problems by following a specific procedure.

Sometimes it comes from the dimensions of the machine in turbogrid. You have to take a look at them and see if they are identical to the dimensions you want or not. I face this problem before posting my videos on YouTube.
Danke!

Sar · October 13, 2021, 05:52

I followed your procedure as mentioned in you tube. I stll get the error. Can you please help me?

Sar · October 13, 2021, 05:53

Quote:

Originally Posted by Ahmed Saeed Mansour

Hello dear Michael, it depend on the way you generate the flow path. Have you watched my tutorials about turbomachinery? I avoided these kinda problems by following a specific procedure.

Sometimes it comes from the dimensions of the machine in turbogrid. You have to take a look at them and see if they are identical to the dimensions you want or not. I face this problem before posting my videos on YouTube.
Danke!

i followed this procedure but still get that error. Please help me

March 5, 2013, 01:34	ask for help :about cfx turbogrid	#1
captain New Member captain Join Date: Mar 2013 Posts: 3 Rep Power: 13	i want to form a stator .but when i put in the profile ,it gives a warn: "WARNING First blade profile is not defined as a hub tip and is too far (0.0945101 of span) from the hub for reliable surface intersection.Surface extension factor will be adjusted accordingly, however application may become unreliable. ERROR Last blade profile is not defined as a shroud tip and is too far (0.858225 of span) from the shroud for reliable intersection. Must be at least 0.858235 of span. " i tried some ways ,but can't solve it .Can anybody help me about this question ?thank you！ mahmood-bn likes this.

June 13, 2014, 08:14	redefine hub coordinates with blade profile at 0% of span coordinates	#2
Veronique Pe New Member Véronique Penin Join Date: Mar 2014 Location: Lyon, France Posts: 21 Rep Power: 12	Hi, I think your blade profile at 0% of span is not corresponding to yourhub profile. Do you try to redefine the hub profile in using the blade profile at 0% of span coordinates? and use 100% of span blade profile coordinates to redefine the shroud coordinates? (plus coordinates to define inlet and outlet domains) I think my problem is similar: Surfaces Blade_1_tr_low and Blade_1_sh_tip_rot do not intersect. Keep me in the loop

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August 13, 2016, 18:56		#3
Ahmed Saeed Mansour Senior Member Have a nice time! Join Date: Feb 2016 Location: mech.eng.ahmedmansour@gmail.com Posts: 291 Rep Power: 11	How can I do this or have you solved it?

April 11, 2020, 08:05		#4
michaelsinaga New Member Michael Jeremy Join Date: Jan 2020 Posts: 8 Rep Power: 6	hey, i know its been a while but have you solved the problem ? i kinda have the same problem. thanks

April 13, 2020, 23:33		#5
Ahmed Saeed Mansour Senior Member Have a nice time! Join Date: Feb 2016 Location: mech.eng.ahmedmansour@gmail.com Posts: 291 Rep Power: 11	Hello dear Michael, it depend on the way you generate the flow path. Have you watched my tutorials about turbomachinery? I avoided these kinda problems by following a specific procedure. Sometimes it comes from the dimensions of the machine in turbogrid. You have to take a look at them and see if they are identical to the dimensions you want or not. I face this problem before posting my videos on YouTube. Danke!

October 13, 2021, 05:52		#6
Sar New Member Subodha Join Date: Oct 2021 Posts: 3 Rep Power: 4	I followed your procedure as mentioned in you tube. I stll get the error. Can you please help me?