2-d meshing

Rahul_P1

Hey all,

So I created a simple 2-d model on inventor, patched the surfaces and imported the geometry into Hyperworks. I wanted to then create an inlet and outlet component for the model before meshing it.

For a 3-d model we,

-Assign components to the surfaces
-2-d mesh the different surfaces
-3-d mesh the entire solid

So analogously, I thought that for a 2-d model I would need to:

-Assign components to the lines
-1-d mesh the different lines
-Surface mesh the entire 2-d object

Unfortunately, when I created a component titled say 'inlet' and assign it to a line by going to Geometry>Organize>Lines and then selecting the line, my line is not getting highlighted. Thus I am unable to proceed any further. Is my general idea wrong or just the way I am executing it?

Thanks,
Appy

Rahul_P1

mukherja,

You do not need to 1d mesh the lines and then surface mesh the surfaces, the reason toe surface mesh in a 3d model is to use this as the face pattern that the internal solid elements will conform to for connectivity reasons and more importantly to define an enclosed volume.

You should just directly surface mesh your components without a 1d mesh on the lines. What kind of a 2d model is this / what is your analysis about?

However
The line not getting highlighted maybe a graphics issues easily resolved by deleting the settings files,

see http://www.altairuniversity.com/wp-content/uploads/2013/04/delete_settings_files.pdf

Rahul_P1

Hello,

So I deleted the files that you asked me to but am still running into the same error. I am trying to perform a 2-d analysis of a water tank as part of a college (Lafayette College) sponsored research. Below is a picture of the 2-d model in inventor:

I saved it as an IGES file and then imported it into HyperWorks. Now I want to assign one of the lines as inlet and the one of the lines as outlet as shown below.

To do this, I go to geometry>organize>lines and then click on the necessary line and try to set its destination component as 'inlet'. But when I do that, on the bottom left hand corner of the screen I get the error message saying 'Lines have not been selected'.

I tried to do the same with a test model as shown below and this time it worked perfectly with the left line being designated as inlet and the right line as outlet.

So can you tell me what I'm missing out in my model?

Thanks!

Rahul_P1

mukherja,

So you are doing a CFD analysis with a 2d model, which solver do you intend to use?

After you surface mesh the surface (using automesh) you then need to go to tool > edges and select the component, this will create plotel elements (these are 1d elements) along the edges of the surface which can then be selected as elements and organized into collectors as inlet and outlet. This is similar to your line mesh method in your first question, just organize them as elements.

Rahul_P1

Hello,

I am planning to use AcuConsole to solve it and then HyperView to view the results. I will try what you suggested and get back to you ASAP.

Thanks

Rahul_P1

Hello Rahul,

So as you suggested I 2-d meshed (automesh) my model. I then created three components titled outlet, inlet and wall. But I could not find the Tool>Edge option that you suggested. Could you let me know where it is located? Below is a picture of my 2-d surface mesh. Hopefully once I figure out where the tools option is located, I can successfully assign the containers to the respective lines.

Just for a bit more background, this 2-d model is the 2 dimensional representation of the 3-d model shown below

Rahul_P1

mukherja,

 

Please find the attached image for edge panel on tool page.

alternatively you can also use features panel to create 1D elements along the edges of your component.

Acuconsole is the preprocessor,

I am afraid acusolve does not support 2d simulations currently, You can use the 3d model that you describe to do your analysis.

Altair Forum User

I have also tried same type of 2D pbm, Though i am able to find edges using find edges, i am unable to organise into inlet, outlet and wall. Please help.

Rahul Rajan_21763

Which solver you are using?As mentioned above Acusolve does not support 2d simulations.Using organize command one can move element to different collector.

 

Regards

Rahul R