[Gulp35]

So advantage of the dimple is surface area/ radius(raising the cooling affect) but it also lowers the cooling the cooling affect by in creasing the resistance of copper by having the area where the boundry layer is thinnest (a circle around where the jet is impingeing) ontop of more copper.

What i am wondering now is if you made a cone and a cylinder with the same surface area and the same minimal bp width, which one would perform better, I'm thinking the cylinder.

Also I was talking to Volenti, and he says that I should, if i choose to go the path of the cone, make a small lip around the edge of the cone that would cause more turbulence and bp strenght.
What do you think about his idea?