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I did not know "Rescale", very interesting!andylaurence wrote:I wonder if OCCFD might be easier if it didn't rely on a bunch of external tools and simply exported an OpenFOAM case that could be uploaded to Rescale. You don't have to worry about tool integration, nor about how much processing power you have - it just runs and doesn't cost very much at all.
Out of curiousity i downloaded this file, what software did you design this with, im impressed with your blends,...cdsavage wrote:A copy of the test car is available here: http://www.mediafire.com/download/sar9z ... xample.zip. Again, this car doesn't conform to the current rulebook, I'm posting it mainly to make it clear how the model should be prepared before submitting.
Rotation of 0 would mean that the inlet surface is facing directly forward. Rotation 'upward' would mean that the surface now faces forward and upward. I think the phrase 'looking down the x-axis' could be interpreted in different ways, but when the left-hand side of the car is facing the viewer, rotation upwards would be clockwise.MadMatt wrote:When saying 10° downward and 20° upward, I am not sure what is your reference point. I will use simple words here because I want to be sure everybody understands, so when looking down the X axis, is it 20° clockwise and 10° anti-clockwise?
In maths I would say +10° and -20° (just to be clear).
I agree the 10mm thickness rule is a difficult one - we'll be fairly lenient on this one as long as it's not an obvious breach. If you are exporting to STL, netfabb (free version) has a wall thickness measurement tool.CAEdevice wrote:I'm so curious about all your projects
To be honest the new rules would not change too much for me and the sidepods would look more realistic.
At the moment the harder rules to respect have been the 10mm thickness and the side impact profiles.
I agree with you - OCCFD would be a lot easier if it was a full blow CFD software on its own. Most of the external tools are for pre and post-processing purposes rather than solver itself.andylaurence wrote:I wonder if OCCFD might be easier if it didn't rely on a bunch of external tools and simply exported an OpenFOAM case that could be uploaded to Rescale. You don't have to worry about tool integration, nor about how much processing power you have - it just runs and doesn't cost very much at all.
I use gaps no smaller than 15mm, and I'm not having problems.MadMatt wrote:For me the issue is airfoil proximity, and moving them further apart gave horrible results (worse than having the gap closed because of the mesh)!
I use gaps smaller than this hence the problems, but I hope it can be solved otherwise I will increase the gap but my airfoil profile is such that if I increase the gap I lose a lot, and then I would have to find a profile that is less sensitive to gap.CAEdevice wrote:I use gaps no smaller than 15mm, and I'm not having problems.MadMatt wrote:For me the issue is airfoil proximity, and moving them further apart gave horrible results (worse than having the gap closed because of the mesh)!
Going by the PM I have received changes are going ahead.CAEdevice wrote:Hi, is there any news about the rulebook? I'm going to start modeling the "definitive" car and it would be useful to have the final template (STEP) to assemble it and use as reference.
cdsavage wrote:Hi,
Any suggestions on the rule changes I mentioned in the last PM? I'm happy to work with you if they would necessitate a big redesign on your end. If not, I'd like to get these changes published as soon as possible.
Thanks,
Chris
cdsavage wrote:Hi,
After having spoken to a couple of the other entrants, this is a slightly different rule modification that we have come up with:
- lower side impact structure may be moved downwards by upto 40mm
- cooling inlet inner template is 500mm long
- cooling outlet surface must be at least 800mm rearward of the inlet
- cooling inlet outer template 1/2 lengths of 575/325mm
Let me know if this would require you to do a major re-design, if so we can make further changes. If time is a major concern to you, I will ask Julien about pushing the first round back by a couple of weeks at our next planning meeting.
Thanks,
Chris