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<- [[:chaosbook:pdes| chapter Turbulence?]] <html> <span style="color:red;font-size:80%;text-align:right;">enter the latest posts at the bottom of a section: <br> to find recent edits: click on [Recent changes], select changed page, then [Old revision], compare versions</span> </html> ====== A baroclinic instability blog ====== **2011-07-21 Predrag** you think we can go baroclinic by AUG meeting time? Would require new code to (1) quotient symmetries and (2) find exact solutions. I, of course, am Spiegel in this configuration (but I can change diapers) **2011-07-21 Annalisa Bracco** well... my desktop had to be dismantled and the OS changed, so nothing works any longer (no fft, no compilers, lost all old emails with pine...). I can try to fix the issue next week. If I get the baroclinic code to work, then we can start searching for the symmetries. I'll need help on that though, because it'll be stupid to code it from scratch if has been done already. The baroclinic geometry is similar to Is channelflow. It is a multi-layer channel. Boundary conditions: lid on the top, slip boundary condition on top, stick slip on bottom, periodic only east-west, wall north south (or vice versa) **2011-07-21 Predrag** Otherwise a flat parallelepiped? Is it Fourier in the wall north south? [[http://Channelflow.org|Channelflow.org]] has most of the code that we need in that case. I'll talk to Gibson. Any feeling for how low a low Reynolds number can be, the minimal cell size? **2011-07-21 Annalisa Bracco** 2 or 3 layers. I have to run it before I can be precise on low //Re// solutions. Should not be an issue though. I can reduce it as much as I wish. Cannot change much the geometry without recoding everything because of fft use. **2011-07-21 Predrag** starting to read up on matters [[http://en.wikipedia.org/wiki/Baroclinic|baroclinic]]
