Quote:
Originally posted by Cathar
I've highlighted the error in your reasoning for you. Flow rate (which is more accurately defined as "volume per unit time") is always linear through a system unless we are somehow compressing the liquid, which for the ~1-10PSI that people use in computer water-cooling systems simply is not happening.
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Not just linear. Equal.
Also, referring to an earlier post, pressure drop is proportional to velocity squared only when comparing points on either side of a pump, for example. It doesn't tell you anything about form friction - that is, friction or pressure drop caused by fittings.
Pressure drop caused by fittings in turbulent flow can best be described through an empirical correlation - there's no direct mathematical relationship between pressure drop and velocity.
In laminar flow, pressure drop due to fittings is proportional to velocity.
People keep tossing the word "thermodynamics" out there. This is entirely chemical engineering transport - heat transfer and fluid flow. I haven't seen any thermodynamics issues relating to this stuff.
Alchemy