An industrial example of oscillations in an exothermic reactor

http://onlinelibrary.wiley.com/doi/10.1002/cjce.20444/abstract

Oscillations can also occur in isothermal reactors with complex reaction kinetics...

http://pubs.rsc.org/en/content/articlelanding/2013/lc/c2lc40649g

See Supplementary Material, movie showing oscillations,see color changes at top of loop, flashing at bottom are peristaltic pumps http://www.rsc.org/suppdata/lc/c2/c2lc40649g/c2lc40649g.avi

This is the reaction used in the micro reactor

This reactor had a pulsing feed so the kinetic oscillations are superimposedover the feed pulsing and the limit cycle on right panel is complex

Briggs-Rauscher https://www.youtube.com/watch?v=_gyzhvMLImg&nohtml5=False Start at 1:50 - sound OK

BZ https://www.youtube.com/watch?v=dMF4RjiITGM Start at 1:24 - music

Oregonator model of BZ reaction

We will discuss these approximations when we get to surface reactionkinetics over catalyst surfaces

Results from my Matlab program, whichis listed at the endof the Grad CRE Noteson this subject

Above are well-mixed reactors.

Now to thin layer of reactants approximating a 2D system

https://www.youtube.com/watch?v=3JAqrRnKFHo&nohtml5=False TURN OFF SOUND - MUSIC

But, before you talk to a biologist, there are other factors involved...An introduction to cell differentiation. “Induction” similar to Turing's ideas.https://www.youtube.com/watch?v=9k4TFJe-ytk

http://rstb.royalsocietypublishing.org/content/royptb/237/641/37.full.pdf