Here's a rough representation of the heat gradient (red=hottest, light yellow=coolest).
Because your channel depth is deepest in the middle, the coolant will be facing a much hotter surface in the center.
Now that's usually good, but this goes back to a baseplate thickness issue: if it's too thin, the heat is too great for the coolant to pick it up (it can be compensated in many ways). If it's too thick, then the heat will spread some more within the rest of the block, resulting in a higher die temp.
Maybe you can follow up on this? Maybe I just don't understand your goal/applied principle here?!?
|