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best open source

  • Thread starter Thread starter Ing Italy
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Ing Italy

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Good morning, I would like to know your opinion on which is the best open source cfd.thanks to who will answer, hello!
 
Ing Italy said:
Good morning, I would like to know your opinion on which is the best open source cfd.thanks to who will answer, hello!
Click to expand...
It depends.

openfoam is definitely the biggest one, with more communities, etc.

otherwise I also heard about the nasa-vof3d if it's okay with your problem. or psalm.
 
Hi, I'm starting to put hands on elmer but at cfd level I'm still not there.
I press that I started now.

@sail: but the nasa vof3d from where you download? on google I can't find any links.


Thank you.
 
thanks for your opinions.I want to make some fairly simple simulation of fluidodynamics and at the same time have an open source sw that allows me when I want to deepen in the future the aerodynamics. of open foam had spoken well to me while queue saturn I only heard it say by name.
Are both of these sw only executable on linux? .I read on the internet that on windows would be able to install using special linux emulators but it seems to me something complicated in fact, what do you think?
 
Elmer is a fem, though, right? I would rather stay on a more classic fvm for the cfd
 
then another thing: on the online cfd forum they talked about inserting a sort of emulator to turn openfoam...but it is a real linux "cracked" or simply a series of lines of code at the bios level that serve to be able to turn even openfoam on windows? .why in the first case obviously wouldn't suit me.someone knows what they refer to?
 
I can't tell you anything about open foam because, apart from the name, I don't know it.

As far as elmer says right, it is a fem
 
Premitting that linux does not crakka...

you have two options:

the first is to install linux (I suggest ubuntu) on your machine so that at boot ask if you want to use linux or win. is definitely the most elegant solution and allows you to make the most of the hw you have, and believe me you will need it.

or you can install an emulation sw in win called virtuabox. with this sw then you will create a virtual machine on which you will install ubuntu or another linux distro of your taste. This solution is convenient to experiment and for all cases where frequent exchange of information between win and linux (e.g., use a cad in win, expose geometry for analysis, and you need frequent geometry changes). par contre, the solution time necessary to of will necessarily be greater due to the sharing of the hw resources and the greater level of sw needed.

Good luck.
 
Ah, I forgot. iirc also exist ports or cross-compilations of of for win and mac, but to feeling I would say that they are accrued.

However give a caelinux eye if you are not practical. It is a distro linux derivative of ubuntu with already installed of, elmer, salome and many others.
 
hello to everyone, I have heard from a colleague who used an open cfd of the mit at university. Can someone help me? You know where to find him? Thank you.
 
the most complete opensource solution and supported by the community for the cfd is certainly openfoam. I used it a bit for external aerodynamics, but it is a really complex tool and requires dedication to using it well.
there is then code_saturne (but I don't know much) that should be simpler, if nothing else because it has a graphical interface. code_saturne ho ha preprocessor, you have to lean on a mesh generator of your choice (always opensource you can choose between salome, gmsh, engrid etc.).
all these solutions require an installation of linux.

if you want to try everything and touch with hand use caelinux, a live distribution based on ubuntu with all the above mentioned software.
 
stefano.garbin said:
the most complete opensource solution and supported by the community for the cfd is certainly openfoam. I used it a bit for external aerodynamics, but it is a really complex tool and requires dedication to using it well.
there is then code_saturne (but I don't know much) that should be simpler, if nothing else because it has a graphical interface. code_saturne ho ha preprocessor, you have to lean on a mesh generator of your choice (always opensource you can choose between salome, gmsh, engrid etc.).
all these solutions require an installation of linux.

if you want to try everything and touch with hand use caelinux, a live distribution based on ubuntu with all the above mentioned software.
Click to expand...
quoto, openfoam has the big advantage of having a lot of online material.
wanting there are some ports on windows of great level, but not free and not even open (they are obviously for the solutor part, not for the pre/post one). The best in my opinion is http://www.symscape.com/ (cost less than 1000€/year).

@stefano.garbin compliments for the "sign" (I say it as user and passionate), can I add you to linkedin?
 
I use as preprocessor engits or openfoam tools, such as blockmesh and snappyhexmesh.
I also tried discretizer, but I didn't appreciate it.
as a solutor obviously openfoam that turns me on a linux machine and as postprocessor paraview.

openfoam has a difficult approach, then when entering the mechanism you can move on. lacks a good manual, such as cfx for example, and you need to search for the material on the net and proceed for small steps.

When you get to a result, satisfaction is so much. Of course, to make your work commercial, understood as a relationship between time spent and result, you must be very good.

wave
 
hi wave very interesting observations of yours.
wanting to generate a mesh for an external aerodynamics study without rotating interfaces engits you feel it valid?
snappyhexmesh is a power tool out of the ordinary, but it made me feel a lot. . .
 
hi wave very interesting observations of yours.
wanting to generate a mesh for an external aerodynamics study without rotating interfaces engits you feel it valid?
snappyhexmesh is a power tool out of the ordinary, but it made me feel a lot. . .
Click to expand...
Hello stefano,


I also only do external aerodynamics studies. Actually, I didn't find myself so bad with snappy, especially if you want to repeat the identical mesh by changing just a few details of geometry, being all from text files, the result is very repeatable.

Same with block mesh. It's amazing, using splines and multiple blocks, what you can create.

Let us say that with the cfd I always tend to do comparative analysis, rather than to look for a single result, and the use of similar mesh is of great help.

However with engits you get remarkable results, with a little practice.

There is also a version for windows, as well as paraview.

wave
 
I'm sorry I couldn't connect before.
I have greatly appreciated your comments from which you also express your competence... thank you all. ...sail,stefano,onda,matteo good evening!
 

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