[ANSYS Meshing] How to do hexahedral meshing

Priyanka Konakandla · October 14, 2015, 10:40

The total number of hexhedral cells are 8400
The mesh sizes are variable and were 10-20 mm in z direction and 21-85mm in x direction and 8-10mm in width

Please help me
Thank in advance

FrankW · October 14, 2015, 11:14

Hello Priyanka

Quote:

Originally Posted by Priyanka Konakandla

The total number of hexhedral cells are 8400
The mesh sizes are variable and were 10-20 mm in z direction and 21-85mm in x direction and 8-10mm in width

Do you think anyone can help you with this informations?! Can you describe your problem in more detail?

So i could wrote:
If the mesh size 10mm x 21mm x 8mm, your body has a volume of approx 14.1L and you have to take 20 elements in z, 14 elements in x and 30 elements in y. Or you have to take 12 elements in z, 20 elements in x and 35 elements in y. etc...

regards
Frank

Priyanka Konakandla · October 14, 2015, 11:35

Quote:

Originally Posted by FrankW

Hello Priyanka

Do you think anyone can help you with this informations?! Can you describe your problem in more detail?

So i could wrote:
If the mesh size 10mm x 21mm x 8mm, your body has a volume of approx 14.1L and you have to take 20 elements in z, 14 elements in x and 30 elements in y. Or you have to take 12 elements in z, 20 elements in x and 35 elements in y. etc...

regards
Frank

the above images are domain and mesh which should be created
the size of the mesh is variable

and the details of the mess size are mentioned above
sorry for incovenience
thank you

FrankW · October 14, 2015, 12:47

Quote:

Originally Posted by Priyanka Konakandla

the above images are domain and mesh which should be created

I don't see any image above! Edit: Image now available.

Priyanka Konakandla · October 14, 2015, 23:33

Please some one look into this problem

shivasluzz · October 15, 2015, 02:43

This you can do in ICEM cfd only... In icem cfd u can set the no. of nodes and spacing on each edges...

In ansys meshing you don't have that control

Priyanka Konakandla · October 15, 2015, 02:50

Hello sir,
My assignment in is to replicate the results of a journal
They mentioned that they used ansys cfx code

Thank you

FrankW · October 15, 2015, 02:56

I don't understand your problem.
You have to generate a simple body, maybe in DesignModeler. And than the body must be meshed with Ansys meshing or icem. There, the mesh size can be adjusted as desired.

Maybe you should look at the Ansys Help and Tutorials to.

regards
Frank

FrankW · October 15, 2015, 03:01

Quote:

Originally Posted by shivasluzz

This you can do in ICEM cfd only... In icem cfd u can set the no. of nodes and spacing on each edges...

In ansys meshing you don't have that control

I do not think so. It should also work with ansys meshing. It a simple geometry.

shivasluzz · October 15, 2015, 07:30

Ansys cfx is for setup and analysis... Ansys meshing and ICEM CFD are for meshing... Previous there was cfx meshing.. Now it's not there I think

shivasluzz · October 15, 2015, 07:37

Frank,
Priyanka needs specific no. of elements on each side.. Its not possible to explicitly define it in ansys meshing... We can control only indirectly through max element sizing..

FrankW · October 15, 2015, 08:21

Quote:

Originally Posted by shivasluzz

Frank,
Priyanka needs specific no. of elements on each side.. Its not possible to explicitly define it in ansys meshing... We can control only indirectly through max element sizing..

A picture says more than 1000 words. By the way, i have more time wasted to write the post as to create the model.

shivasluzz · October 15, 2015, 09:02

Oh ok there are no. of divisions option.. I was not knowing this

Priyanka Konakandla · October 15, 2015, 09:42

Thank you soo much sir

Antanas · October 15, 2015, 10:06

Quote:

Originally Posted by shivasluzz

Oh ok there are no. of divisions option.. I was not knowing this

So many wonders to discover
Are yet with the enlightenment spirit...

FrankW · October 16, 2015, 02:49

Quote:

Originally Posted by Priyanka Konakandla

Thank you soo much sir

Nice that I could help. But I know not as yet what the question was!

Priyanka Konakandla · October 16, 2015, 05:44

i am sorry sir, i encountered some problems while meshing because of some mistake committed in design modeler

how did u calculate the number of divisions while edge sizing?

Priyanka Konakandla · October 16, 2015, 05:45

i am sorry sir , i encountered some issues while meshing because i creates some extra surfaces in design modeler

how did u calculate the number of divisions in sizing?

FrankW · October 16, 2015, 06:04

Quote:

Originally Posted by Priyanka Konakandla

how did u calculate the number of divisions in sizing?

Seriously? I counted the elements of the two short sides of the body and the third is calculated. So if there should be total 8400 elements, the following calculation: 8400 / (8 * 14) = 75 (Of course, I can also have miscounted!)
If that was causing problems, you should not play with CFD!

October 14, 2015, 10:40	How to do hexahedral meshing	#1
Priyanka Konakandla New Member Priyanka Join Date: Oct 2015 Posts: 14 Rep Power: 10	The total number of hexhedral cells are 8400 The mesh sizes are variable and were 10-20 mm in z direction and 21-85mm in x direction and 8-10mm in width Please help me Thank in advance

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October 14, 2015, 23:33		#5
Priyanka Konakandla New Member Priyanka Join Date: Oct 2015 Posts: 14 Rep Power: 10	Please some one look into this problem

October 15, 2015, 02:43		#6
shivasluzz Senior Member sluzzer Join Date: Jul 2014 Posts: 142 Rep Power: 11	This you can do in ICEM cfd only... In icem cfd u can set the no. of nodes and spacing on each edges... In ansys meshing you don't have that control

October 15, 2015, 02:50		#7
Priyanka Konakandla New Member Priyanka Join Date: Oct 2015 Posts: 14 Rep Power: 10	Hello sir, My assignment in is to replicate the results of a journal They mentioned that they used ansys cfx code Thank you

October 15, 2015, 02:56		#8
FrankW Member Frank Weise Join Date: Mar 2009 Location: Germany Posts: 55 Rep Power: 17	I don't understand your problem. You have to generate a simple body, maybe in DesignModeler. And than the body must be meshed with Ansys meshing or icem. There, the mesh size can be adjusted as desired. Maybe you should look at the Ansys Help and Tutorials to. regards Frank

October 15, 2015, 07:30		#10
shivasluzz Senior Member sluzzer Join Date: Jul 2014 Posts: 142 Rep Power: 11	Ansys cfx is for setup and analysis... Ansys meshing and ICEM CFD are for meshing... Previous there was cfx meshing.. Now it's not there I think

October 15, 2015, 07:37		#11
shivasluzz Senior Member sluzzer Join Date: Jul 2014 Posts: 142 Rep Power: 11	Frank, Priyanka needs specific no. of elements on each side.. Its not possible to explicitly define it in ansys meshing... We can control only indirectly through max element sizing..

October 15, 2015, 09:02		#13
shivasluzz Senior Member sluzzer Join Date: Jul 2014 Posts: 142 Rep Power: 11	Oh ok there are no. of divisions option.. I was not knowing this

October 15, 2015, 09:42		#14
Priyanka Konakandla New Member Priyanka Join Date: Oct 2015 Posts: 14 Rep Power: 10	Thank you soo much sir

October 16, 2015, 05:44		#17
Priyanka Konakandla New Member Priyanka Join Date: Oct 2015 Posts: 14 Rep Power: 10	i am sorry sir, i encountered some problems while meshing because of some mistake committed in design modeler how did u calculate the number of divisions while edge sizing?

October 16, 2015, 05:45		#18
Priyanka Konakandla New Member Priyanka Join Date: Oct 2015 Posts: 14 Rep Power: 10	i am sorry sir , i encountered some issues while meshing because i creates some extra surfaces in design modeler how did u calculate the number of divisions in sizing?