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leejsmith · 07-06-2003, 06:48 PM

is the jet orifice area better now ?

i read through your thread over at ocau today and also the new deisng idea thread.

does the 4d rule apply when the jets are in the cups.

also is my 3mm base too thin ? should i have a thicker base allowing the tubes to be in the cups but far enough from the base for the jets form ?

i was almost at the point of giving up and just ordering a cascade from you but i spent too much on tools for this so i am going to carry on.

i found this block is 2C lower than the maze so about the same as the last one.

also i found the lower jets to be a problem my self today as i milled 0.5mm of the base of the last block that had the tubes 1.75mm into the base making them 2.25mm and the temps dropped back by 2.5C.

after some googling i found a study on jet arrays and there tests showed that the jet array provided the best heat transfer across a wide range of velocities when the height above the plate was 3d. this was for air would this also apply for water.

07-06-2003, 06:48 PM	#297
leejsmith Cooling Savant Join Date: Mar 2003 Location: notts uk Posts: 408	is the jet orifice area better now ? i read through your thread over at ocau today and also the new deisng idea thread. does the 4d rule apply when the jets are in the cups. also is my 3mm base too thin ? should i have a thicker base allowing the tubes to be in the cups but far enough from the base for the jets form ? i was almost at the point of giving up and just ordering a cascade from you but i spent too much on tools for this so i am going to carry on. i found this block is 2C lower than the maze so about the same as the last one. also i found the lower jets to be a problem my self today as i milled 0.5mm of the base of the last block that had the tubes 1.75mm into the base making them 2.25mm and the temps dropped back by 2.5C. after some googling i found a study on jet arrays and there tests showed that the jet array provided the best heat transfer across a wide range of velocities when the height above the plate was 3d. this was for air would this also apply for water. Last edited by leejsmith; 07-06-2003 at 08:34 PM.