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Water Block Design / Construction Building your own block? Need info on designing one? Heres where to do it

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Unread 12-26-2002, 09:33 AM   #1
hara
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Default Is this block too cool?

ok, maybe it resembles the white water block but who cares anyway. Do you think it'll cool well? It has one input and one output. The base is 1mm thick, the microchannels are 1mm wide, 4mm deep. We will be using the jet impingement technique like cathar's. What do you think about it, and what tools should we use at the tool shop? Also, We're considering the use of saw blades. Is there a cnc with saw blades?

The output is above the large free space parallel to the slit.

Question: How much wide is the slit on cathar's block? The block will be for personal use, I'll be making 3. One for me, 2 for my friends.
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Unread 12-26-2002, 11:14 AM   #2
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I think that the single outlet could hinder performance, but I can't quite visualize what you have in mind, so I might be off. Got another diagram?

Cutting into the fins, in the middle would also reduce performance.

As for tools, you can take a look at the discussion in the Radius thread.
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Unread 12-26-2002, 01:19 PM   #3
hara
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Blue is the input, red is out.
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Last edited by hara; 12-26-2002 at 01:42 PM.
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Unread 12-26-2002, 01:39 PM   #4
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???
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Unread 12-26-2002, 01:57 PM   #5
hara
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I also need feedback on this block. What do you think? If you want cad drawings i'll attach them. What about O rings. Can they be rectangular in shape? Cathar, I need your comments also. :shrug:
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Unread 12-26-2002, 02:36 PM   #6
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Quote:
Originally posted by hara
Blue is the input, red is out.
??? I agree. Normally you would want the flow going with the fins not against as water will just flow over the fins and not into them. I would have a center inlet and 2 outlets on the end like Cathars and my Lemon Bock in my avatar.
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Unread 12-26-2002, 02:41 PM   #7
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Quote:
Originally posted by hara
I also need feedback on this block. What do you think? If you want cad drawings i'll attach them. What about O rings. Can they be rectangular in shape? Cathar, I need your comments also. :shrug:
I don't think this would do any good. I could very well be wrong. I would double the amount of channels at least to gain some surface area but i don't think it would outperform anything that is already out there. Just my opinions. Sure there will be better one's to come.
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Unread 12-26-2002, 03:56 PM   #8
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Maybe this will help, so you think this block will be better than squirell? We'll still try to make the other one just for the fun of it though.
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Unread 12-26-2002, 03:59 PM   #9
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I'm still hoping that the squirrel will outperform the maze though.
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Unread 12-26-2002, 07:43 PM   #10
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Quote:
Originally posted by hara
Maybe this will help, so you think this block will be better than squirell? We'll still try to make the other one just for the fun of it though.
I would make the fins solid all the way left to right and then have a center inlet and 2 outlets on the left and right like the block I made in my avatar. I think if done right it will out perfrorm the maze 3. It really isn't all that hard to beat the maze 3 BTW. I think the squrilel block could beat it if done right.

With any luck you should get some more people here with better scientific knowledge than I on designs.
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Unread 12-27-2002, 04:43 AM   #11
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We wanted to have one outlet so that it would be different than cathar's
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Unread 12-27-2002, 05:09 AM   #12
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The two outlets are there for a reason, use them, as long as you give recognition if the idea was taken from Cathars block, if it was'nt then do whats best for you, keeping everyone else happy is a never ending thankless job...
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Unread 12-27-2002, 09:58 AM   #13
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Quote:
Originally posted by hara
We wanted to have one outlet so that it would be different than cathar's
When I get home after work tonight I will show you a way to use one inlet and one outlet. It may make routing hose a pain but it is the only way I can think of to keep close to the performance of dual outs. I have to go to work now though. PM me if I do not reply by tomorrow.
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Unread 12-27-2002, 10:30 AM   #14
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since water takes the path of least resistance.. I would offer the following unproven suggestions..

If you are going to go with this model.. I forsee the water going pretty much strait up.. and not using the fins.. therefore not effeciently taking the heat away unless you have high volume. If you want to try out this model, perhaps the top fin should be one piece and not 2. Therefore forcing the water to go around and into all the other fins, and denying the path of least resisitance. I would think this would give you some performance gains on your current model.

Thermodynamics are crazy from what I know of them.. the best way to find out is to tweak and try. I encourage you to try every design if you have the resouces and tweak until you find out for yourself what works best. If you dont get the most efficient wb.. then at least you know what works and what doesnt for next time. Unless you have a professional program that can simulate the process..
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Unread 12-27-2002, 11:23 AM   #15
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As water always prefer the shortest path, your side outlet could have the problem of promoting more flow in the channels closest to it. But anyway, this is minimized as the flow resistance of the channels is a lot more than in the rest of the block. Maybe this is a good solution; the only way to know is testing it.

I made a drawing were the shortest path takes more flow (thicker line), but real situation could be better.
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Unread 12-27-2002, 11:36 AM   #16
hara
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I could place the inlet barb near the bottom

I'm trying to design a top with a slit so that only a base and a top are needed, not 3 layers. Maybe even machine it out of thick perspex.

I have some questions before proceeding:

1) The base is 5mm thick and the channels 4mm deep. Is this good?

2) Will it fit the mobo given the current dimensions?

3) How much wide would the slit on the top have to be?

4) Is the central channel a good idea?

Thanks for your replies
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Unread 12-27-2002, 08:35 PM   #17
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Quote:
Originally posted by hara


I have some questions before proceeding:

1) The base is 5mm thick and the channels 4mm deep. Is this good?

2) Will it fit the mobo given the current dimensions?

3) How much wide would the slit on the top have to be?

4) Is the central channel a good idea?

Thanks for your replies
1) I have no idea. :shrug:
2) You will have to measure the space on the mobo you are going to use to find out.
3) I have no idea. :shrug:
4) I don't think so but I could be wrong.

Here is the single inlet outlet I was refering to. This will not work with the way you currently have it though.
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