Quote:
Originally Posted by plucas
I am EarlQ partner. I am the aero guy who does the aero development and CFD. Also looking at purchasing an FRS....
PM me if you are interested in making a solid model. I can give you a good starting point to work from. I just cannot distribute the model we are currently using. We use Creo/ProE but also have a lot of experience in SolidWorks. Glad to see some other engineers on here with interest in racing cars! 
We are using OpenFOAM. Basically we use creo/proE for the cad model, then OpenFOAM for the pre-processing and solver, and then paraview for post-processing. We run this on a linux workstation. Depending on the analysis and its requirements, runs can take anywhere from 12-36 hours.
Correct that cfd is not "real life." It is an experiment with conditions that do not change to get repeatable results. It is in no way 100% and that is a big misconception. However, it can definitely drive quality design changes that drastically improve performance. Most automotive cfd models are very simplified because of computing time and it won't drive design changes on a big scale. How it is set up makes a big difference. I have validated our program and setup using automotive test of ahmed bluff body and a class 8 heavy vehicle (GCM). Both have data from university for validation of setup and program.
Also windtunnels are not "real life" either. That is also a big misconception. It is also just an experiment to get repeatable results that represent what is going on in real life (just like cfd). Both are doing the same thing, just in different ways.
Not all the models are of the same quality. However, the models still need to be reworked anyways to make them watertight for cfd purposes. If you have any questions on computer hardware or cfd in general, let me know in this thread or pm. I am happy to help :happy0180: |
I'm starting to research hardware and Linux, after over a decade being out of the loop for what is cutting edge.
I was looking at starting with an Intel i7, but saw on your blog you are using Intel Xeon. What should I focus the build around? Which resources should be the priority (cpu, core number, cache, ram, video card)? Is the CFD mostly cpu/ram intensive, and ParaView graphics card intensive?
Also, how much of a difference in performance between a regular Linux install (Ubuntu) and going through VirtualBox on Windows?
Thanks for any help you can offer.