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Is this an ok waterblock design?

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Roger24

Member
Joined
Feb 14, 2002
Location
Norway
block4big.bmp
 

Iron Hawk

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Joined
Jan 19, 2002
Location
Groton, CT
Looks okay. One chanel is quite longer than the other, I wonder if that would help increase turbulance (a good thing)?
 

Tecumseh

Member
Joined
Feb 26, 2002
Location
Ohio
Looks like a center-feed design, correct?

How thick is the base?
Any features added to increase turbulence?
Copper...aluminum...other?
How tall are the channels?
 
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Roger24

Member
Joined
Feb 14, 2002
Location
Norway
I haven't actually built it, it's just on the drawing board. I was thinking maybe a 2 or 3mm base, or whatever is most effective. Would 12mm height be ok, or should I go higher or lower? I'm planning on using 1/2" tubing. Yes, it's centerfeed.
The main reason I split the flow in two with a wall in the middle was to increase surface area.
I read this review http://www.overclockers.com/articles315/ , and the comment in the end "Interesting to see what more surface area does for performance. I'd really like to see some more innovative approaches to increasing surface area in waterblocks - any takers??" made this idea suddenly pop up in my brain :)

Here's another design I had in mind:
block3big.bmp

The dimensions on the channels and walls are the same as the last one, and it's centerfeed too
 
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Tecumseh

Member
Joined
Feb 26, 2002
Location
Ohio
More surface are should help, but I think more turbulence
may be even better. A 3mm base should be fine. Any thinner
and you may get flexing when it is mounted. Your second
design may be OK down to 2mm because it seems to have
more internal structure. 12mm channels should be fine.

The problem will all WB designs to date is that nobody
has done a full 3D theoretical heat transfer study on them.
We do have general guidelines, however. Think of
something to increase turbulence.
 
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Roger24

Member
Joined
Feb 14, 2002
Location
Norway
What if I file the walls a bit with a rough file afterwards, will that increase turbulence?
 
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Roger24

Member
Joined
Feb 14, 2002
Location
Norway
I don't know the ideal thickness of the walls either.
Anyone wanna make any of these waterblocks and test?
 

Tecumseh

Member
Joined
Feb 26, 2002
Location
Ohio
Well, maybe. That depends on what you call a rough
file. You might gain a lot with ribbed walls and an
irregularly varied depth of the channels of +-150 microns.
After you have structures for creating turbulence you
can enhance it by sandblasting the channels.
 

rossd

Registered
Joined
Nov 16, 2001
Location
Silicon Valley California
I think the thickness of the base will be a big factor.

You can work out how well a design will perform using a fluid dynamics model and finite element analysis for the metal part, but I've never seen anyone do it.

rossd.
 

RangerJoe

All that is Man!
Joined
Nov 24, 2001
Location
Stillwater, Oklahoma
i might try out one of those
i have a huge piece of copper just sitting there, so, maybe if i have enough time this weekend so something, ill do it...no promises though...which would you rather be built?
 
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Roger24

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Feb 14, 2002
Location
Norway
Hmm, maybe the second one, since the first one is more like a Maze with a wall in the middle? It's designed to fit on a Slot A (Thunderbird only) and a Socket A if you put a plexiglass fitting or something on it, and I read somewhere that Socket A is 50x50mm and that block is 52x52mm. I'm worried that the hose connectors on that block will be too close together though (which is why I moved the top connector 2mm upwards)
 
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Roger24

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Feb 14, 2002
Location
Norway
RangerJoe said:
i might try out one of those
i have a huge piece of copper just sitting there, so, maybe if i have enough time this weekend so something, ill do it...no promises though...which would you rather be built?

Still want to try it?
Sorry, I don't want to be pushy. I'm just curious about how it will perform :)
 

morphling1

Member
Joined
Mar 17, 2002
Location
Slovenia
Hi, your first desing looks similar to something I did, except I didn't used 90° turns and one wall.
spiral2.JPG

and here first Al prototype
spiralni%20blok%20open%201.JPG

It did Ok,
Then I also made Cu version with one wall, and retest all my blocks. You can read my own waterblocks test, here Click here !
And now I'm also doing basicaly the same blosk idea like yours second one, again more rounded aproach, but I didn't finnished milling the bottom of the chanells yet, cos' I need different milling bit that I had to order.
Semi finnished block here:
finnished%20rough%20milling1.jpg
 

JFettig

Hey! I showered! Senior
Joined
Jan 5, 2002
Location
MN
you should compare al with copper with them blocks!, make a copper one to compare to your al proto

iv heard there is VERY little diff and i just dont know.... very interested in hearing
 

ed8150

Member
Joined
Apr 15, 2002
Location
Baltimore, MD
morph, how did you mill that? heres my idea. some things are different. i desgined a new more efficent water feed and it will be a little wider over the cpu and the find will be a little thinner and closer together. o and roger show us where the inflow and outflow are on the diagram.