Quote:
Originally posted by myv65
The easy answer is that "yes", the baseplate will have an effect at the velocities and gaps we operate within. The tough answer is determining the effect. There is no analytical solution, only simulations. Accurate testing is the best bet.
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The velocity at which it strikes the baseplate stays the same. Only after it strikes the plate does velocity drop because of surface geometry, friction, surface tension(think the last is correct). In the case of submerged, surrounding water effects velocity also which I found out the hard way. As you get further out in diameter from the stagnation area and up to the ouside diameter of the impingement wall the greater heat transfer. So the base plate in it self can effect the results of the impingement.
This is the question I keep running through my mind. If there is micro-channels or any surface geometry that causes enough pressure drop, will it render the jet impingement useless? I'm leaning towards the answer of "yes".