Thread: Block Desgin
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Unread 06-23-2002, 12:53 PM   #10
#Rotor
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Join Date: Feb 2002
Location: Dione, sector 4s1256
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do not be fooled by thinking that it is high flow rate, that makes the block perform better.... high flow rate only induces more turbulence in the block, and that, the induced turbulence, is what really causes the block to perform. if you have a design that is absolutely smooth and that personifies laminar flow in a manner that would make them hydro engineers envy you, you will have astronomical flow-rates to brag with, but that block will utterly suck at removing heat. I say design a block with one thing in mind. That of moving heat into the water as efficiently as possible. and the only way to do that, is with lots and lots of turbulence. This is where science actually has 2 positive aspects complementing another, by designing the interior of a flowpath to induce turbulence, one invariably ends up with added surface area, For instance just adding a little dimple to a smooth surface, will also add a little but more surface area, but the turb. being caused in the wake of the dimple more than doubles the cooling effect of the surface behind it...

Now turbulence has the side effect of appearing as back-pressure to the pump, this is not always a bad thing, back pressure will slow down the overall flow rate of a rig, and if the blocks are responsible for this, then you are doing good, because it is in the blocks, that you need the flow velocity of the fluid to be transformed into turbulence, ending in superior heat transfer between block and fluid. This overall reduced flow will enable the radiators to also perform marginally better.
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