4 ms·
Small nitpick... my understanding is that these simulations are numerically correct- they are, however, numerical approximations to simplified versions of the N
by martijn_himself 12y ago
Small nitpick... my understanding is that these simulations are numerically correct- they are, however, numerical approximations to simplified versions of the Navier-Stokes equations. So the mathematical equations are incorrect in that they do not accurately model parts of physical phenomena they represent. They are accurate enough if your objective is to create pretty (moving) pictures. They are not accurate enough if your objective is to determine forces on objects.
- thomasjames 12y agoPoint well taken. They are not numerically unstable in the sense that the term is most often used with ill conditioned matrices or floating point weirdness, but yes, they are significantly oversimplified and will not converge with reality if you measure them by a meaningful metric.
- martijn_himself 12y agoExcuse my curiosity- do you work in CFD? I did quite a bit of CFD work for my degree- then I made the mistake of becoming a programmer :).
- thomasjames 12y agoI worked for a CFD HPC company for about two years doing a mix of traditional engineering and programming, and I realized that I like programming and learning about computer architecture way more than the mechanics. So I went back to school for CS/CE and just like you fell into the trap!