Crazy W/B design

[tex707]

Originally posted by #Rotor
allow me to drop an asteroid into the pond


don't design the block with the aim to make life easy for the coolant to get through it.... that is what bigass pumps are for!

design the block to maximize the energy stored in the velocity of the coolant, by converting it in as much turbulence as possible. Turbulence is the "scrubbing agent" you need to get the hot layer of coolant hugging the surface of the block, to let go.

you will find this philosophy to have a double edged effect, in the form of....... the more imaginative the turbulating inventions are you come up with, the more surface area you are going to end up with... Now that is a double positive. Believe me! not too many of those around these days...

This ia a good idea...and easy to be brought to life...

Maybe we should try to provide "vortex generators", a solution used in aerospace engineering for creating local turbulence...

[hara]

Originally posted by tex707
Yes, this is in mm...and no, it is not possible to machine this...not easily, anyway.......however, maybe the following could be.:

That would take a looong time to program on a cnc. Also, keep channels to dimensions like for example 1mm 1.5mm 2mm. Get it?

[Balinju]

hey man, if you remove that wall it will become exacly as our (me and hara) block.

if you want i can send you the cad file of it. it has 10channels of 2mm each. originnally it was designed to have 1.5mm channels and 12 channels, but the machinist had no 1.5mm endmills for us so we had to change the design a little bit.

[JCYC5]

Balinju and hara, would it be possible for you to send me your CAD files just for me to take a look at them? I want to try to see how to work it, lol...

Which CAD program do you use?

[tex707]

Originally posted by hara
That would take a looong time to program on a cnc. Also, keep channels to dimensions like for example 1mm 1.5mm 2mm. Get it?

Sure, I know what you mean. However, I think that if one doesn't keep a "standard" channel dimension, that could lead to only one more tool pass per channel, right?

[tex707]

Originally posted by Balinju
hey man, if you remove that wall it will become exacly as our (me and hara) block.

if you want i can send you the cad file of it. it has 10channels of 2mm each. originnally it was designed to have 1.5mm channels and 12 channels, but the machinist had no 1.5mm endmills for us so we had to change the design a little bit.

Sure, I would like to see the CAD files you've made...please e-mail them.

BTW....how do you like this design...it is similar to the one you've made, with a little extra:

[tex707]

Ooooops….I apologize for the mistake….here’s the assembly as it should look like.

[Balinju]

give me your email or prv me your email, one of them and i will send you the cad file. we used autocad, and secondly sorry for the delay in time, yesterday I had my Maths A-Level Exam. No more maths for this year

[Balinju]

ok to say what differences there are from your design to ours, our dimplets were way smaller. 0.7mm each. we opted for 0.4mm but the chunk of that kind of drill bid was wider than the space between the channels and the cone, so we had to do with 0.7mm. secondly we have that cone in the middle, its there for turbulance, and flow separation. then that outer line you have made at the end of the fins. that is extra. that channel is way outside the cpu core, it will only restrict the water flow.

If i were you, i would make those spirals more twisted than the block we made, and make more spirals, or channels.
Nigozeg once posted his idea which was somthing similar, but with extremely small spirals and extremly long channels which was extreemly impossible to cnc it.

i would like to see improvements on that design though

[JCYC5]

My email address is JCYC5@hotmail.com

Thanks

[hara]

Check your email. Keep this in mind when designing waterblocks:

originnally posted by cathar
1) Define target pump pressure
2) Derive optimal orifice size as a balance of pump pressure, water velocity, and volumetic flow rate.
3) Define target die size. Heat load is basically unimportant. Assume 100W (real watts - not fake Radiate watts) as a peak
4) Determine what material you're going to make the waterblock out of.
5) Derive structural integrity constraints to cope with up to 50kg of pressure over a 1cm^2 area given the material you've chosen.
6) Machine the material in a way that maximises the water surface area within 2mm of each side of the CPU die (ie. for a 10x10mm die, target a 14x14mm area to maximise surface area over)
7) Using 2) above, derive a method to maximise the water turbulence over the die area specifically - this will be greatly affected by the design you've chosen in 6)
8) After 7), derive the maximum height required of the water-block material and the base-plate thickness. These two are linked more strongly that one would first imagine. Determine this for your 100W heat load. Target the fin/channel/block height at the 98% dissipation mark. Meaning that 98% of the heat is being dissipated below that height. Basically this defines an upper limit to the useful height of the block. As a hint, for copper/100W/water, if you're focussing on anything above 8mm, you're going in the wrong direction, unless you have pathetically low flow rates/pump pressure.

After you've defined 8), you'll then learn that this impacts on 7), and almost always on 2), so you'll need to reiterate the process to refine it, while will undoubtedly bring 6) back into the mix as well, while keeping a very close eye on 5).

Keep refining and reiterating those points and you'll asymptotically approach the limitations of the waterblock's efficiency with the design architecture and machining method you've chosen.

[Balinju]

If you would like to see the block ready tex707, here you go

[JCYC5]

strange... I haven't recieved any emails yet...

[Balinju]

i am going to resend them now!!!

[JCYC5]

Thanks a lot!!

[trit187]

I'm going to be making a block and have a couple quick questions, first, for Balinju how does that block proform? and do you like it?
then what program do you use for the cad files, and to design the blocks on, are they mill specific? I have access to a mill at my school, but havn't gotten the chance to mess around with the software ect, I'm kind of rambling so am going to stop, thanks for any help

[Balinju]

Originally posted by trit187
I'm going to be making a block and have a couple quick questions, first, for Balinju how does that block proform? and do you like it?
then what program do you use for the cad files, and to design the blocks on, are they mill specific? I have access to a mill at my school, but havn't gotten the chance to mess around with the software ect, I'm kind of rambling so am going to stop, thanks for any help

ok then, if you asked me, i will answer you

First of all, i can't tell you exactly how squirrel performs because just when we were going to compaire it with a maze 3 and with $hit block, i don't won't to tell you what happened, a long story, so we had to stop our tests. (i am already happy that our equipement is still alive )

What i can say about its performace is that the readings from asus a7n8x but not from the probe, from the internal die at full load was about 42degrees, but we all know how calibrated these thermal diodes are

Secondly, we designed our block on ACad 2k2. on good cnc's, you could draw your block using ACad2k2 or any other cad software, just save your block as a *.dxf file and in many times, it could be possible to import this *.dxf file directly into the mill. When we were machining our block, the mill the machinist was using had nothing similiar because in reality it was an NC only, today they got a new one, wonderful mill i must say which could do what i said above. if the cns you are going to use does not support this, then i think you will need to redraw your block on the cnc software.

[trit187]

wellI checked in today and the mill they use uses mastercam 9.1 software,I was wondering if I could load a cam design into this for it to make, and if so, how simple/difficult would this be to do? thanks alot for your help

[Balinju]

if you mean how difficult it is to mill, i can't answer because i am not a machinist. the only thing that i know is that our machinist took quite some time.

[trit187]

ok, just curious what are the demensions of the block, and do you have a CAD file of the final design? thanks

[Balinju]

Originally posted by trit187
ok, just curious what are the demensions of the block, and do you have a CAD file of the final design? thanks

pm me your email address and i will send it to you