CFX alignment of rotor and extended domain

AdhavRohit · December 18, 2013, 03:07

Please help me.
how can I allign rotor and this extended domain as shown in this file.

thanks in advance.. help will be greatly appreciated..!!

ghorrocks · December 18, 2013, 04:54

Use the mesh transform options in CFX-Pre. But the best option is to generate the geometry in the correct location and then it will automatically fit properly.

AdhavRohit · December 18, 2013, 19:54

[QUOTE=ghorrocks;466888]Use the mesh transform options in CFX-Pre. But the best option is to generate the geometry in the correct location and then it will automatically fit properly.[/ok. I have created this geometry in CATIA V4 R18. i mean the outer extended domain. I will try to change co ordinate system there itself. Thanks a lot again.]

AdhavRohit · December 19, 2013, 07:59

[QUOTE=AdhavRohit;466871]Please help me.
how can I allign rotor and this extended domain as shown in this file.

thanks in advance.. help will be greatly appreciated..!![/ Hi, I am almost done now. but i cant bring now the two domains in same plane. i.e axial alignment. i seen axial alignment option but could not operate it.. pleese help me.]
thanking u in advance

ghorrocks · December 19, 2013, 16:34

CFX-Pre has no mating options or anything like that. That is why it is preferable to do this on a solid modelling package where you can use things like mate conditions to get things to align precisely.

In CFX-Pre you have to tell it what distance to translate. So you need to determine the move and define the vector. If you don't know the distance then guess, then undo, and adjust the vector until you get it right. Very tedious but you get there.

AdhavRohit · December 20, 2013, 06:11

[QUOTE=ghorrocks;467107]CFX-Pre has no mating options or anything like that. That is why it is preferable to do this on a solid modelling package where you can use things like mate conditions to get things to align precisely.

In CFX-Pre you have to tell it what distance to translate. So you need to determine the move and define the vector. If you don't know the distance then guess, then undo, and adjust the vector until you get it right. Very tedious but you get there.[/

In Analysis 'Flow Analysis 1' - Domain Interface 'S1 to R1': Pitch Change option 'Automatic' is not valid if side 1 or 2 of the interface has a 360 degree or greater pitch angle, zero radius, mesh faces normal and parallel to the rotation axis, or mesh faces at the hub curve (low radial or axial position) which are thin in the radial or axial direction.]
.......... this error is coming.

December 18, 2013, 19:54	reply:thanks	#3
AdhavRohit New Member Rohit Adhav IIT Madras Join Date: Aug 2013 Posts: 10 Rep Power: 12	[QUOTE=ghorrocks;466888]Use the mesh transform options in CFX-Pre. But the best option is to generate the geometry in the correct location and then it will automatically fit properly.[/ok. I have created this geometry in CATIA V4 R18. i mean the outer extended domain. I will try to change co ordinate system there itself. Thanks a lot again.]

December 18, 2013, 04:54		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	Use the mesh transform options in CFX-Pre. But the best option is to generate the geometry in the correct location and then it will automatically fit properly.

December 19, 2013, 16:34		#5
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	CFX-Pre has no mating options or anything like that. That is why it is preferable to do this on a solid modelling package where you can use things like mate conditions to get things to align precisely. In CFX-Pre you have to tell it what distance to translate. So you need to determine the move and define the vector. If you don't know the distance then guess, then undo, and adjust the vector until you get it right. Very tedious but you get there.