- Joined
- Oct 12, 2001
- Location
- Los Angeles
Well Cathar must have gotten the itch again. You can see his latest creation here ----> http://forums.overclockers.com.au/showthread.php?s=&threadid=167840
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Cathar is at it again...
- Thread starter nikhsub1
- Start date
- Joined
- Aug 18, 2002
- Location
- Mean Streets Of Orange County CA
Can you post the text? Im too lazy to register...
- Joined
- Apr 19, 2003
"
Registered: Aug 2001
Location: Melbourne, Australia
Posts: 2843
Micro-Cup Impingement block - work in progress
Been working on a new design. Actually, it's not that new. It arose out of an amalgamation of ideas from myself, bigben2k, jaydee116, and volenti, and this is my take on an implementation.
The design's basic approach is to utilise an array of high velocity jets (5-10 m/s) and direct them at the centre of a matching array of "cups" drilled into the copper block above the CPU die.
The jets are smaller than the cups with the idea that the jets will push to the bottom of the cup, hit the bottom and push up out the sides. The idea is that ALL of the water comes into contact with something hot and carries the heat away. Because we're using cups, there is actually a great ratio of copper-water surface area than in the fin-design that is used in the White Water. ie. in theory the concept shows promise to potentially exceed what the White Water can offer.
How about in practise? Well that depends on the implementation.
I picked up prototype #1 today. It looks like the following:
I won't go into dimensions and fine details as it's still in development and I have a second prototype block on the way. As you can see, there are a lot of very small jets and very small holes for them to focus into.
After a bit of a bad start with a bad mount and a poor lapping job done in the dark and rain, both of which were subsequently remedied, the block is finally on the test bed.
Performance is good, not quite White Water standard yet, but definitely promising. I've learned a great deal from this first go at the concept through performing various tests, and identified a number of ways in which the implementation can be improved.
Sorry for not being terribly forthcoming with greater details, but I thought you guys might be interested in what's going on."
Registered: Aug 2001
Location: Melbourne, Australia
Posts: 2843
Micro-Cup Impingement block - work in progress
Been working on a new design. Actually, it's not that new. It arose out of an amalgamation of ideas from myself, bigben2k, jaydee116, and volenti, and this is my take on an implementation.
The design's basic approach is to utilise an array of high velocity jets (5-10 m/s) and direct them at the centre of a matching array of "cups" drilled into the copper block above the CPU die.
The jets are smaller than the cups with the idea that the jets will push to the bottom of the cup, hit the bottom and push up out the sides. The idea is that ALL of the water comes into contact with something hot and carries the heat away. Because we're using cups, there is actually a great ratio of copper-water surface area than in the fin-design that is used in the White Water. ie. in theory the concept shows promise to potentially exceed what the White Water can offer.
How about in practise? Well that depends on the implementation.
I picked up prototype #1 today. It looks like the following:
I won't go into dimensions and fine details as it's still in development and I have a second prototype block on the way. As you can see, there are a lot of very small jets and very small holes for them to focus into.
After a bit of a bad start with a bad mount and a poor lapping job done in the dark and rain, both of which were subsequently remedied, the block is finally on the test bed.
Performance is good, not quite White Water standard yet, but definitely promising. I've learned a great deal from this first go at the concept through performing various tests, and identified a number of ways in which the implementation can be improved.
Sorry for not being terribly forthcoming with greater details, but I thought you guys might be interested in what's going on."
- Joined
- Mar 14, 2003
- Location
- Beaverton, OR
looks very promising - cant wait to see the second prototype
- Joined
- Feb 15, 2003
The pics are here:
Edit: Scroll down more for pics posted by Cheesy Peas
Quote from Cathar:
"After an overnight settling in of the thermal paste the block seems to have stabilised at about 1.2C worse than the White Water.
Of course my test setup is not accurate down to 0.1C, but that is my "guess" through manipulating ambient temperatures and watching where the sensors "blip" between values. In reality the test setup isn't more accurate than about a 1C variation, so I'll just make sure that this is clear, and I'm just doing my best to put a value on it.
Version 2 of the block with the more focussed jets and rearranged hole patterns should be a significant improvement."
Edit: Scroll down more for pics posted by Cheesy Peas
Quote from Cathar:
"After an overnight settling in of the thermal paste the block seems to have stabilised at about 1.2C worse than the White Water.
Of course my test setup is not accurate down to 0.1C, but that is my "guess" through manipulating ambient temperatures and watching where the sensors "blip" between values. In reality the test setup isn't more accurate than about a 1C variation, so I'll just make sure that this is clear, and I'm just doing my best to put a value on it.
Version 2 of the block with the more focussed jets and rearranged hole patterns should be a significant improvement."
Last edited:
- Joined
- Dec 1, 2002
- Location
- miwest, usa
enlightend said:
Thanx for posting the pics, but you really should host them yourself rather than directly linking to them. Bandwidth is much harder to come by in the land of Oz than it is here.
peace.
unloaded
- Joined
- Jul 2, 2002
- Location
- Rotherham,UK
Theres ya hosting sorted
you can remove your tags now wolfio, and UnLoadeD ya can live in peace now lolIt looks like another winner to me!!
- Joined
- Dec 1, 2002
- Location
- miwest, usa
Thnx for sorting the pix guys. Just a little pet peeve of mine 8)
The block looks interesting, can't wait to see the next, optimized revision. There are a few things that look like possible issues, but knowing cather, I'm sure they will be adressed in the next one.
peace.
unloaded
The block looks interesting, can't wait to see the next, optimized revision. There are a few things that look like possible issues, but knowing cather, I'm sure they will be adressed in the next one.
peace.
unloaded
- Joined
- Jul 4, 2002
- Location
- Rathdrum ID
It's a nice looking block. It kind of reminds me of Jaydee116s pyramid block only with holes.
- Joined
- Sep 10, 2001
i wonder how much this beautful block would set someone back? cause i want to get one. are you taking pre-orders cathar? i want No. 1! lol.
- Joined
- Jun 8, 2002
- Location
- Melbourne, Australia
snyper1982 said:
LOL - Still in development.
This is prototype design #1, and not even the serious block yet.
Prototype design #2 might be in my hands by the end of the coming week. That's the block that will determine whether or not I even go ahead with making these. I won't start making blocks unless it's a step forwards.
- Joined
- Feb 11, 2002
- Location
- U.P. Michigan
That gives new meaning to jet array. Hope to hear some insight into the science behind the development when you are done.
Does stagnation in the central impingement jets give you pause in the theory?
Does stagnation in the central impingement jets give you pause in the theory?
- Joined
- Jun 8, 2002
- Location
- Melbourne, Australia
gone_fishin said:
Hmmm, I'm not really certain there's much in the way of theory to describe it. Those aren't dimples, but deep holes.
Think of a faucet at full blast aimed down the middle of a glass. If that's not maximising turbulence, then nothing will.
- Joined
- Feb 13, 2001
- Location
- Twin Cities
- Joined
- Jun 8, 2002
- Location
- Melbourne, Australia
Get some barbs on that thing Hoot and fire it up.
As cliched as it sounds, I discussed that same idea with a friend a while ago, but decided against it for the sheer fact of the amount of work involved to make it, and settled on trying to get the cup thing optimised.
I'm excited that you're doing it. Gives me a chance to see how it turns out in reality.
As cliched as it sounds, I discussed that same idea with a friend a while ago, but decided against it for the sheer fact of the amount of work involved to make it, and settled on trying to get the cup thing optimised.
I'm excited that you're doing it. Gives me a chance to see how it turns out in reality.
- Joined
- Sep 7, 2002
- Location
- Tucson, AZ
I wonder if you can get a volume discount on 88 x 0.050 (really tiny) barbs? Be done strait away....
Of course, you'd need an electron microscope and some nano-bots to tighten all the hose clamps. :>
Of course, you'd need an electron microscope and some nano-bots to tighten all the hose clamps. :>
