Theory for boundary layer reduction with motor driven impeller

link1896 · 01-07-2005, 06:43 PM

Howdy everyone,

I was lying on the beach the other day while on holidays dreaming of water block design (doesn't everyone spend their spare time dreaming about wb design?)

anyway, has anyone tried a motor driven impeller inside the water jacket hard up against the block to distrupt/reduce the boundary layer?

Seals for the motor shaft would be easy for all those thinking about water leaking, i'm imagining a pair of double lipped shaft seals on a 10mm od shaft. I'm going to try the with a delrin impeller.

Worth a try, can see one benifit being very small pressure drop if it works.

Regards,
link1896

Belenar · 01-08-2005, 02:36 AM

Surely worth a try. I'm not sure if you can get more disruption than a storm block for instance, because if I get it correctly jet blocks were designed to do that.

If you decide to build one, give us the results please. Oh yeah ... and pics!!!

Kobuchi · 01-08-2005, 03:32 AM

This idea will reappear until someone proves it's no good - see here.

EDIT: What I love about this approach is that it best answers the principle that all turbulence should be useful turbulence.

01-07-2005, 06:43 PM	#1
link1896 Cooling Neophyte Join Date: Nov 2004 Location: Melbourne, Australia Posts: 15	Theory for boundary layer reduction with motor driven impeller Howdy everyone, I was lying on the beach the other day while on holidays dreaming of water block design (doesn't everyone spend their spare time dreaming about wb design?) anyway, has anyone tried a motor driven impeller inside the water jacket hard up against the block to distrupt/reduce the boundary layer? Seals for the motor shaft would be easy for all those thinking about water leaking, i'm imagining a pair of double lipped shaft seals on a 10mm od shaft. I'm going to try the with a delrin impeller. Worth a try, can see one benifit being very small pressure drop if it works. Regards, link1896 Last edited by link1896; 01-07-2005 at 07:09 PM. Reason: typo

01-08-2005, 02:36 AM	#2
Belenar Cooling Neophyte Join Date: Oct 2004 Location: Belgium Posts: 51	Surely worth a try. I'm not sure if you can get more disruption than a storm block for instance, because if I get it correctly jet blocks were designed to do that. If you decide to build one, give us the results please. Oh yeah ... and pics!!! __________________ The fastest cross team around: Team Supreme

01-08-2005, 03:32 AM	#3
Kobuchi Cooling Savant Join Date: Jan 2003 Location: BC, Canada Posts: 313	This idea will reappear until someone proves it's no good - see here. EDIT: What I love about this approach is that it best answers the principle that all turbulence should be useful turbulence. Last edited by Kobuchi; 01-08-2005 at 03:37 AM.

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