Quote:
Originally posted by gmat
note: flow rate is *not* pressure.
Actually (setting aside parallel branches) the flow is constant and the same in just any point of the circuit.
The pressure is a factor of several things:
* pipe diameter
* position in the circuit. It's another flame-war topic but on a pure fluid dynamics point of view, the WB should be just after the pump (high pressure) and the rad just before the inlet (low pressure).
Theres a point in the circuit where pressure switches from positive to negative. (not: thats *always* the case even with our poor centrifugal pumps) you'll want that point to be *before* your rad and *after* your waterblock(s).
For more info on that there's a very good article at overclockers.com.
|
This is a good point on pressure in the system. In my setup I have the rad first then the cpu, I will be switching this as an experiment. But as it is now, I can observe a few things about pressure. The tube between the pump and rad is very hard to compress compared to the tube between the rad and cpu. Also there is a distinct humming resonance that the rad gives off with no fans running (could this be some good turbulance?) Also squeezing off the pump to rad tube results in the water level rising drastically in the fill tube on the res as compared to squeezing the line from the rad to the cpu which results in the fill tube water level lowering. It seems I am set up the opposite of what is recommended.