The boiling of liquid in contact with a solid wall at higher temperature than the boiling point of the fluid is a classical instability. Very high levels of heat transfer coefficient can be acheived on average but the fluctuation is large and very hot spots on the wall appear stokeastically. I feel we aught to be able to engineer the surface so as to control the heat transfer process and reduce the range of temperatures the wall sees. Does anyone have any insights or ideas about how we could control boiling heat transfer?
Ha, this is the question we are addressing at the moment (our EPSRC project on Evaporative Cooling of Internal Combustion Engines)
Dear Zhiyin I am planning to do a simple undergraduate project on boiling. First simply on a flat plate and then with surface topology designed to influence the boiling behavior. If it works maybe it could become a collaboration on your EPSRC contract with Julian. Cheers Martin
Dear Martin
I actually don t understand the problem, however, I think if you increase the roughness of the heating surface, more stable boiling with less stochastic behavior is anticipated.
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