esportare/importare from autocad to gambit

[Gennarob86]

kind colleagues of the forum,

It's the first post I send, I just signed up, you want to forgive me any error (wrong discussion, and what else).

I cannot, with autocad, use the export command, in particular I would like to export as an acis, or create a .sat file readable by gambit.

the problem, which now afflicts me for days, is that after choosing the .sat rescue folder, and pressed ok, autocad asks me to select the items you want to export! then I obviously select all my design (cooled static sheets of a gas turbine) and I send, but it comes out written:

no solids, regions or shapemanager bodies selected.

and does not allow me to export.

I would be grateful to all those, certainly very experienced, who will solve the problem!

 

[PlannerRoad]

from the online guide regarding the export of acis sat files:

It is can export some types of objects to an acis file in ascii format (sat).

it is possible to export surfaces, regions and solids 3d nurbs cut into an acis file in ascii format (sat). other objects, such as lines and arches, are ignored.use the acisoutver system variable to specify the acis version for the acisout command output.Obviously what selections are neither surfaces, nor regions or solids, here is the reason for that reply of autocad.

 

[Gennarob86]

dear plannerroad,

Thank you, you were very clear, but at this point the obvious question arises: how to export on gambit my turbine blade that I designed with autocad?

 

[GP.]

gambit, never heard, from a quick googlata I find this:
gambit is a single integrated application for computational fluid dynamics that allows:
· creating or importing geometry by:
- solid modeling tools, including boolean operations on surfaces or solids
- use of iges files, their cleanup and their modification
· the generation of calculation grids for all fluent solutors (including trust, polyflow and nekton) structured or unstructured by the use of hexahedra, tetrahedra, pyramids and prisms
· examination of the quality of the calculation grid
· determination of areas in which to allocate boundary conditions
gambit also allows the automatic subdivision of many geometries in simpler subdomains to be discreteized.Sorry the question maybe stupid, if you're talking about this software makes sense to import a 2d???

 

[Gennarob86]

Sorry the question maybe stupid, if you're talking about this software makes sense to import a 2d???

dear g.p.

the software in question is exactly what you found: This is a software cad specific for the execution of thermofluidodynamic calculations of surfaces (through the software cae coupled fluent). So I'm using one of the famous cad/cae systems.

it is possible to create, with gambit, both 2d and 3d drawings.

I am trying to export a design made with autocad on gambit (which would not allow me to use the raster design functionality, available instead as an add-on for autocad).

I hope someone who kisses with fluent/gambit can help me.


Thank you.

Gennaro

 

[Er Presidente]

kind colleagues of the forum,

It's the first post I send, I just signed up, you want to forgive me any error (wrong discussion, and what else).

I cannot, with autocad, use the export command, in particular I would like to export as an acis, or create a .sat file readable by gambit.

the problem, which now afflicts me for days, is that after choosing the .sat rescue folder, and pressed ok, autocad asks me to select the items you want to export! then I obviously select all my design (cooled static sheets of a gas turbine) and I send, but it comes out written:

no solids, regions or shapemanager bodies selected.

and does not allow me to export.

I would be grateful to all those, certainly very experienced, who will solve the problem!

do not post the same question on different forums.
It may be that export in acis wants the selection of only one model and not of assemblies.

Hi.

 

[giufranco]

dear gennarob86,

If the model you created in autocad is a solid 3d, there is no problem importing it as ".sat" in gambit.
I think you have to read the autocad help and see how you possibly convert the geometry you already have in one or more solid 3d.

If you don't leave, let me know!

good work,

♪

 

[Gennarob86]

Dear Jun,

being my 2d geometry, and wanting to achieve with such geometry a thermofluid dynamic 2d calculation with gambit/fluent, I would like to import on gambit the 2d design of a cooled turbine blade that I made with autocad. How to do that?

Thank you for your help!

Gennaro

 

[giufranco]

then gennaro follow the following points:

1) When you export to gambit for a 2d case, you need to create autocad surfaces (use the "region" command). be careful that all your 2d geometry must be composed of regions(s).
2) with the command "acisout", in autocad, choose all the surfaces you created and save them in a file ".sat".
3) open gambit, choose -->import --> acis choose the file ".sat" you created before. also activate the "heal geometry" and "make tolerant" options.

That's all!

remember: the important thing is that you have created some regions in autocad!

I hope this will help you!

 

[Gennarob86]

Dear Jun,

you definitely put me on a good road because actually creating regions these can be saved in sat format. the problem is how to create such regions. In fact the requirement to create a region is that this is bound by a single closed polyline. the problem is that it seems impossible to do this for my shovel: First of all, I can't use the join command to create a single polyline from more contigue polylinees (as if it wasn't enough....), then I can't delimite almost any region, unless, I repeat, it's not bound by a single closed polyline.

Would you like to try you, dear juncture, that you are much more experienced than me, to export my infamous design to my sats that I would obviously pass you?

On the other hand I would have thought of getting proengineer or katia: provided that I know for certain that both software work with formats imported directly from gambit, I would use them to realize an intermediate export from autocad to proengineer or from autocad to catia. remains to be seen, and perhaps someone knows, if such intermediate export is possible.........

Help me ahah, and thank you!

Gennaro

 

[giufranco]

Hello gennaro,

at the moment I cannot take your geometry in hand for absolute lack of free time :-(

In reality modeling 3d is not my strong, but for particularly "hostical" geometries to treat I usually use the "boundary" command of autocad, which allows me to create regions in a very easy and fast way.
try to see in the autocad help and you will see that it solves quickly..... then go to the most exciting part, in fluent I imagine;-)

Let me know!

Hi.

♪

 

[Gennarob86]

Hey, guys, problem solved! !

as gambit import iges besides acis, it was about to understand how to export iges from autocad. the solution was disarming: autocad does not export iges but........autocad mechanical si.......... It was enough to get me....