[PSYMN]

NormalVector... If you are working in 2D, then you are just working with shells and I don't think you end up with shadows, but I guess there is the side1 and side2 equivalent...

If you mesh them now, I guess it is meshing each "part" separately and then giving you "walls" around the perimeter of each part.

What you want is for it to mesh conformally between parts so that Fluent knows that the lines between the parts are interfaces?

You just need to create a multi-body part. Here are the steps

In DM, Create your named selections for each zone... Click on edges to create named selections for things like the interface, inlet and outlet. CLick on surfaces to create the 2D fluid or solid zones. Then left click (with the ctrl held down) to select all the parts you want in the multi-body part. Then right click and you will see an option that is something like "Form New Part" (sorry, the wording may be a bit different, I am writing this from memory). This will create a new multi-body part. Then save and proceed to ANSYS meshing.

In ANSYS meshing just mesh and it will automatically create a conformal mesh. Make sure you see your named selections... If you don't then maybe you need to check an option so they are passed from DM... Or you could just create them in ANSYS Meshing if you want (actually, I think ANSYS Meshing has easier tools for creating Named Selections).

Then send the mesh Fluent and your "INTERFACE" named selection will turn into "INTERFACE-side1" and "INTERFACE-side2". (They don't really call it a shadow wall for 2D).

Have fun.

Have

[aweizazuji]

Thank you ,Simon.

[wanna88]

Hi all,

Can Someone help me?

I am new user for ICEM CFD.
I have a real image from CT scan data in STL file format.
I have imported it into ICEM.
Can smoothing the image be done in ICEM?
When I checked the image in ICEM is in a surface body. Can ICEM create a solid body from this surface body?

Thank you so much is someone can provide me with information.

Regards,
Naima

[PSYMN]

There is a tutorial for bio-medical scan data... Check the customer portal and find the Aorta tutorial.

ICEM CFD is a surface based modeler. You don't need a solid. Just make sure the surface is "closed"; there are lots of STL repair tools to help you do this. Then put a material point inside and mesh...

ICEM CFD is not intended to smooth the image... It is design to mesh the model, not make it look "artificially" good. Programs like 3DExploration from XDimension Software do a good job of smoothing STL images...

Best regards,

Simon

[NormalVector]

If you're looking for a program to smooth and manipulate STLs, my research lab uses a program called 3-matic to do all of the prep work on geometry originating from CT scans. I don't have much experience with it but I think it works pretty well.

[wanna88]

Hi Simon,

"There is a tutorial for bio-medical scan data... Check the customer portal and find the Aorta tutorial"

I have try this tutorial but always stuck with the function to create a part.
Why when I select the part, it will select the whole geometry?

" there are lots of STL repair tools to help you do this. Then put a material point inside and mesh"

May I know, what is STL repair tools?


Thank you.

Regards,
Naimah

[kingjewel1]

Originally Posted by wanna88

Hi all,

Can Someone help me?

I am new user for ICEM CFD.
I have a real image from CT scan data in STL file format.
I have imported it into ICEM.
Can smoothing the image be done in ICEM?
When I checked the image in ICEM is in a surface body. Can ICEM create a solid body from this surface body?

Thank you so much is someone can provide me with information.

Regards,
Naima

As for the tools, instead of Mimics, how about Slicer3D?

Could you let us know how you got on, this would be interesting-

[PSYMN]

@wanna88, you should probably run Geometry => Repair => Build Diagnostic topology to segment your model by angle before selecting surfaces to add to a part...

Under the geometry tab, there is an icon for repairing faceted geometry. Once you see the names of the commands, you can check the help for more info...

[Amir1]

Hi guys,

Thansk for your helpful information in this regard.

I just have a question. I have a box includes a fluid and couple of solid objects. I have already drawn the geometry in ICEM and created the "Body" as fluid. But after meshing, I dont know why the mesh consists of the solid parts!

Any idea is apprecaited!
Thanks
Amir

[Far]

Pictures are welcome

[diamondx]

may be there are holes in your geometry... show us some pictures !

[Amir1]

Thank you guys for your prompt responses.
I have read the book Ali posted online. It was very helpful. I m trying to correct the geometry a little bit since there are some unattached cells and will be sharing the final result with you.

[a.sarami]

I have somehow the same problem. I have a closed surface in ICEM (empty inner part) and would like to fill it to have an full solid body, How can I do that?
I appreciate any help.
Thanks.

[Amir1]

Hi Ali Sarami,

Make sure you have done the following steps :

1. Your surfaces cretaed properly and named in the part section
2. The "internal wall" section has been turned on in the part mesh set-up for all the internal solid parts

Good Luck,
Amir

[mhdasar]

I have a Cylinder and i want to create a outlet on that cylinder but when i create a part the cylindrical part and the surface created are showing and the cylindrical part is not murging
please can anybody help me or suggest me whats the problem

Originally Posted by lisa

Dear Members,

I have a Impeller , rotar and the blades joined together. I would like to substract the solid part of the geometry from the fluid region in ICEMCFD.

I am not sure how to carry out the boolean operation in ICEMCFD.

Thanks in advance
Sesan

[Sumanth Bhat]

In ICEM CFD, What is material point? What is the difference between meshing a 3D model with material point and without material point?

[Far]

Material point is point which directs the icem cfd to create mesh in specified region if it is closed from all sides.

You dont need the material point usually for 2d or 3d case.

you need material point when you have more than one cell zones in your domain. For example solid and fluid. Air and water etc

[Sumanth Bhat]

Thanks for clarification. I have few more doubts.

I have only one fluid domain.

When I import geometry in ICEM-CFD using IGES/STEP format, in the left window, I can see a some new options, " 1. Bodies " and " 2. Fluid_1_1_MATPOINT ". [Fig 1]

When I share geometry dierctly from Design Modular, these two options will not apper on the window. Why so? What is the difference of these two procedures?



Also, In Fig 2, While blocking, What is that "PART" option. Which option I have to choose to create blocking of my fluid domain.?

Please explain.

[Far]

Originally Posted by Sumanth Bhat

Thanks for clarification. I have few more

I have only one fluid domain.

When I import geometry in ICEM-CFD using IGES/STEP format, in the left window, I can see a some new options, " 1. Bodies " and " 2. Fluid_1_1_MATPOINT ". [Fig 1]


Please explain.

It is material point, also known as body.

Also, In Fig 2, While blocking, What is that "PART" option. Which option I have to choose to create blocking of my fluid domain.?

Neither. Use your own name e.g. fluid.

Or I would delete these bodies and create my own.

[Gert-Jan]

@ Sumanth Bhat
In the tree you see a list of different types of geometries: points, lines, surfaces and bodies. Here, bodies are material points. Nothing more, nothing less. You can visualise each type of geometry by ticking them on or off.

If you have a geometry that contains two different volumes, you have to define two body points (material points) within each volume. To help ICEM in detecting the separate volumes during the meshing process.

Then in part you see objects with a specific name. These names will end up in your mesh. The part can contain surfaces & points & lines on which you can define different boundary conditions in Fluent or CFX. It can also contain a body like a fluid or a solid, which end up in fluent or CFX.
Do not create parts that contain surfaces and bodies together. Make unique parts for each body!

When you import an igs-geometry, ICEM creates a single part and normally puts all geometry in there (in your case: Fluid_1_1_MATPOINT). This is a little weird. Like Far explaines, you have to create you own parts. You should put all geometrical objects (points, lines, surfaces and bodies) in different parts that make up boundaries and volumes. If you have assigned every geometrical object to a part, the part that ICEM initially created will be almost empty. It will contain a solid, to my best knowlegde. Then you can delete this part safely.