General grid interface

August 25, 2003, 05:05

Hi, I have a structured mesh an a unstructured mesh, between this meshes I have a GGI Connection. I'd like to know if there is a rapport between the nodes of the meshes that must be applay.

Tanks and have a nice day.

Daniele

August 25, 2003, 16:47

Daniele,

I'm not sure what you mean by "a rapport between the nodes", but if you are asking if you need to consider the topology on either side, the answer is no. The only consideration is that the geometric surfaces must be the same (within ~10% of element size). If you are dealing with a frame or pitch change, only the hub and shroud curves need to line up, the periodic surfaces don't.

Regards, Robin

August 26, 2003, 01:56

Hi Robin, thanks for your answer, was helpfull.

Regards, Daniele

junc · November 6, 2012, 11:01

Hi, Robin
i can't understand "hub and shroud curves need to line up", could you explain it?
thanks

cdegroot · November 6, 2012, 12:48

I'm pretty sure people who submitted as Guests in 2003 are not going to respond...

k.vafiadis · November 6, 2012, 18:49

Quote:

Originally Posted by junc

Hi, Robin
i can't understand "hub and shroud curves need to line up", could you explain it?
thanks

Obviously they talk about turbomachinery where hub and shroud curves of each stage have to line up with each other

.
Frame or pitch change may occur but the modeller's guide explains everything about the domain interfaces.

junc · November 22, 2012, 02:15

thank you for your reply, i get it.

August 25, 2003, 05:05	General grid interface	#1
Daniele Guest Posts: n/a	Hi, I have a structured mesh an a unstructured mesh, between this meshes I have a GGI Connection. I'd like to know if there is a rapport between the nodes of the meshes that must be applay. Tanks and have a nice day. Daniele

August 25, 2003, 16:47	Re: General grid interface	#2
Robin Guest Posts: n/a	Daniele, I'm not sure what you mean by "a rapport between the nodes", but if you are asking if you need to consider the topology on either side, the answer is no. The only consideration is that the geometric surfaces must be the same (within ~10% of element size). If you are dealing with a frame or pitch change, only the hub and shroud curves need to line up, the periodic surfaces don't. Regards, Robin

August 26, 2003, 01:56	Re: General grid interface	#3
Daniele Guest Posts: n/a	Hi Robin, thanks for your answer, was helpfull. Regards, Daniele

November 6, 2012, 12:48		#5
cdegroot Senior Member Chris DeGroot Join Date: Nov 2011 Location: Canada Posts: 414 Rep Power: 17	I'm pretty sure people who submitted as Guests in 2003 are not going to respond... k.vafiadis and junc like this.

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November 6, 2012, 11:01		#4
junc New Member su yunde Join Date: Aug 2012 Location: China Posts: 16 Rep Power: 13	Hi, Robin i can't understand "hub and shroud curves need to line up", could you explain it? thanks

November 22, 2012, 02:15		#7
junc New Member su yunde Join Date: Aug 2012 Location: China Posts: 16 Rep Power: 13	thank you for your reply, i get it.