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Long Haired Git · 02-14-2005, 10:05 PM

What does "velocity" mean to you?
The flow, in litres per minute is constant from the outlet of the pump to the inlet of the pump. The velocity of the liquid, expressed as meters per second, changes constantly in order to keep the flow (LPM) constant despite changes in diameter and the parallel paths possible.
Eg: In a radiator there may be 5 parallel tubes, so assuming equal resistance, each tube gets 1/5th the overall flow rate (assuming all liquid goes through the radiator). Each tube may be only 1/10th the overall cross sectional area of the tubing in use though, in which case the velocity of the coolant will increase to be twice as fast as it is in the tubing.

02-14-2005, 10:05 PM	#7
Long Haired Git Cooling Savant Join Date: Jan 2003 Location: Sydney, Oz Posts: 336	What does "velocity" mean to you? The flow, in litres per minute is constant from the outlet of the pump to the inlet of the pump. The velocity of the liquid, expressed as meters per second, changes constantly in order to keep the flow (LPM) constant despite changes in diameter and the parallel paths possible. Eg: In a radiator there may be 5 parallel tubes, so assuming equal resistance, each tube gets 1/5th the overall flow rate (assuming all liquid goes through the radiator). Each tube may be only 1/10th the overall cross sectional area of the tubing in use though, in which case the velocity of the coolant will increase to be twice as fast as it is in the tubing. __________________ Long Haired Git "Securing an environment of Windows platforms from abuse - external or internal - is akin to trying to install sprinklers in a fireworks factory where smoking on the job is permitted." (Prof. Gene Spafford) My Rig, in all its glory, can be seen best here AMD XP1600 @ 1530 Mhz \| Soyo Dragon + \| 256 Mb PC2700 DDRAM \| 2 x 40 Gb 7200rpm in Raid-0 \| Maze 2, eheim 1250, dual heater cores! \| Full specifications (PCDB)