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-   -   Stallion 3D CFD (http://www.cfd-online.com/Forums/main/109597-stallion-3d-cfd.html)

AndrewLittle November 21, 2012 09:22

Stallion 3D CFD
 
Hello Everyone,

I am quite new to the forum and would like to introduce myself. I am a Mechanical Engineer working in Michigan. I have a BS degree in Mechanical Engineering from Kettering University and have always had great interest in fluid flow and aerodynamics. I have a small amount of CFD experience and I finally have the opportunity to design something where aerodynamics, lift, drag, and control are keys areas of concern.

My first question is about Stallion 3D. I have searched the forums a little bit and have yet to find much information about. Does anyone have any experience using this program?

Thanks and I look forward to your responses,
Andrew Little,

AndrewLittle November 30, 2012 08:31

Well it appears some of my fears have been confirmed with this product. It appears to be not very widely used in the CFD community.

Does anyone have a suggestion on a software to use? I plan on looking into the Open Foam code in the near future, however the holidays and my new born son are taking up a lot of my time (not a bad thing if you ask me!).

Overall, I am trying to determine the L/D of an airframe at various speeds and angles of attack.

Thanks again for your help.
Andy,

cdegroot November 30, 2012 09:23

Hi there. I think you are right. I have never heard of Stallion 3D before and I've been in CFD for quite a few years. Personally, I use a code that I developed as well as ANSYS CFX (and occasionally ANSYS Fluent) for my work. I think OpenFOAM is a good option, especially if you don't have a large software budget. Lots of people use it so you should be able to find lots of help. I don't use it myself, but I understand the learning curve is probably greater than a commercial code like ANSYS. Maybe an OpenFOAM user can comment on this.

mgd November 30, 2012 11:45

OpenFOAM is a good option, but as cdegroot already mentioned, the learning curve is steep - especially if you don't already have a PhD in fluid dynamics and numerical methods!
There are some good examples with OpenFOAM, and a lot of good information on the forums and internet which certainly helps. Another possibility is the Stanford SU2 code. I've only just started working through the tutorials, but so far am quite impressed and the more focussed nature of the code for external aero (rather than the general purpose mathematical toolbox approach of OpenFOAM) might make it quicker to pick up and use for your application. There isn't an active forum that I've managed to find yet, but I get the impression that that may be changing soon.
Regardless of what you use, just remember - it is quite easy to get results out of whichever code you choose, just not necessarily the right results...

agd November 30, 2012 12:25

For external aero calculations, you might also look at ISAAC. It is available from sourceforge. It is a structured-grid, density-based solver written in FORTRAN, and incorporates a decent set of widely used algorithms for flux calculations and turbulence modeling. I have not modeled anything with it, however, so this recommendation should be taken with a grain of salt. My experience with it thus far is restricted to assisting some students in setting it up, and also in reviewing some of the source code. I can say that under Ubuntu linux it was very easy to build, and it comes with several example cases involving airfoils.

shirazbj December 1, 2012 22:25

Quote:

Originally Posted by AndrewLittle (Post 395008)
Well it appears some of my fears have been confirmed with this product. It appears to be not very widely used in the CFD community.

Andy,

I googled a little. It seems this Stallion 3D is quite good. At least it is easy to use. Can use CAD model.

AndrewLittle December 14, 2012 09:43

Thanks for the information everyone. I will have to look into each of the codes you've discussed. Now if only I didn't have hobby "A.D.D." i might actually get one of them up and running on my personal computer as well.

Unfortunately, I haven't received much help from Hanley Innovations (creator of Stallion 3d) as of late. I sent them an e-mail a few weeks ago and haven't received a reply yet. Hopefully the voice mail I left them will yield some results.

Andy,


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