"Radius" by BigBen2k

[m3_arun]

its hard to get 4gpm flowrate in a WC system without a super-powerful pump. (i think)

[bigben2k]

I agree.

I never actually estimated the flow restriction of the inside of the block, so until I actually figure it out, or test the prototype, it'll remain a mystery.

Otherwise, I agree: there's no way I'll get 4 gpm with this block and pump.

Look out for a new thread on CFD.

[bigben2k]

Here's the latest render, with outriggers:
(Thanks to Utabintarbo)

ref14490

[hara]

When will the base be ready?

[bigben2k]

Dunno:shrug:

Utabintarbo will get the measurements to Fixittt, who'll make a prototype in polycarbonate (for my flow tests).

Right now, we're having a conversion issue: Utabintarbo can translate the Solidworks file to IGES, but Fixittt wants a DXF to import to <insert CNC format here>, and SolidWorks doesn't do DXF

[nicozeg]

So you need a software that read and writes both formats?

Try the Rhinoceros demo from www.rhino3d.com

The demo is fully functional, but it only allows 20 saves/exports. More than enough for your task.

[utabintarbo]

Originally posted by nicozeg
So you need a software that read and writes both formats?

Try the Rhinoceros demo from www.rhino3d.com

The demo is fully functional, but it only allows 20 saves/exports. More than enough for your task.

Yeah, I've been meaning to revisit Rhino. Will try it and see.

Bob

[bigben2k]

(finally!) got a reply from Lepage:

We do not have a product for polyethylene tubing.

Susan
Technical Service

[utabintarbo]

Originally posted by bigben2k
(finally!) got a reply from Lepage:

Funny how terse they are when they figure out that they can't sell you something! :shrug:

Bob

[jaydee]

Originally posted by bigben2k
and SolidWorks doesn't do DXF

I got SolidWorks 2003 and it lets me save in .DXF format?

[jaydee]

Originally posted by jaydee116
I got SolidWorks 2003 and it lets me save in .DXF format?

Ahhh, scratch that. It will let me save DXF in drawing but not assembly or part. Lots to learn about this software....

[LiquidRulez]

I heard someone say that they can import a SW file into mastercam and export it as DXF.

Dont realy know if it works or not.......I will tomorrow though and Ill let you guys know. If it does Id be glad to convert it for ya's


EDIT

Didnt work but I found a site that tels you how to make a DXF file from a solidworks model..........

LINKAGE

http://psdam.mit.edu/2.000/tutorials...F-Tutorial.pdf

Hope this helps

[bigben2k]

Some interesting progress:
http://forums.overclockers.com.au/sh...postid=1535450

My fellow frenchman has agreed to take a look at Radius, in an attempt to simulate the heat/flow dispersion.

This would be nice...

[bigben2k]

I've got the graphs from Roscal.

First of all, I'd like to take a minute here, to extend a BIG thank you to Roscal: the data that he provided is absolutely fantastic, and I don't believe that Radius could be optimized as much as it's about to be, without his most excellent work.

What follows is some of the graphs that he sent me. If anyone is interested in seeing the whole series, PM me, and I will give you the link to the complete HTML page, complete with comments!

Note: the graphs were based on the latest Radius design, as Utabintarbo put it together. It does not include a nozzle, nor a flow seperator.

Another thank you to Utabintarbo, also for putting up with me and my unusual (Canadian?) wording of some descriptions.

[bigben2k]

First graph:

It is a flow velocity, as noted by the chart.

Comments: because there is no flow seperator, there is a big deadspot, right in the middle. I will be going over some options, and possibly with the help of Jaydee116, I can add a decent flow seperator that'll work. Nozzling may or may not be a factor, I will be going over this as well.

[jaydee]

I can give it a shot. Need pretty detailed info and a good drawing of what it is you need.

[bigben2k]

The next one, also a flow graph, shows that there is a vortex forming, in the outer channel (ring, or toroid).

I should have predicted this. My original idea was to have the outer curve, but not the inner one. The solution I'm thinking about applying here, is to do away with all this curve stuff, and have the outer channel (ring or toroid) completely square.

I never got around to optimizing the outlet, but I have a potential solution to this as well.

This graph also partly shows something that completely blew me away: there is (slightly) more flow in those channels at 45 degrees, than the ones at 90 degrees. The overall speed is pretty balanced otherwise, with fluid velocities reaching 2.5 m/s (assuming a 100 gph flow rate).

From the previous graph, one can also see that there is stagnant flow in the top half of the channels, around the outer edge of the fin pattern. It is not terribly relevant, but I will attempt to add a restriction, from the top, to eliminate this deadspot. Otherwise, the flow is mostly concentrated at the baseplate.

[bigben2k]

This one is a thermal.

It clearly shows (to me) that the fins are absolutely critical. Also, if I interpret Les's latest series of graphs, the more the better (i.e. a bunch of really small fins).

If you look REAL closely, you'll see a hint that the heat extends better through the central four fins, which are the only ones that are connected together. This is by far, what limits Radius from being more effective: disconnected fins. White Water's fins are ALL continous.

[bigben2k]

This last one is a fluid thermal.

With all the issues stated above, it all makes sense.

[bigben2k]

Thanks Jaydee116, I will get you the info that you need.

First, here's a new top outlet opening. (red, solid. yellow: opening). Since this may compromise the top integrity, I'll be going with a thicker top. Those red gaps are 3.5 mm wide. The opening's inner radius is 25 mm, and I'll have to lookup the outer radius.

[bigben2k]

Here's a rough idea of the flow seperator I'm looking at.

The diameter showed here is 5/8 in., but I'll be revising the nozzle size. In short, the seperator will be about 1/2 in. tall, and in the shape of the highlighted area, in blue. It will sit on top of the fins. Since the inlet diameter is 5/8, I'm hoping that I can design a "flow seperator"/nozzle that I can simply drop in the inner tube.

[hara]

What programs were used to simulate the block? Looks interesting.

[bigben2k]

As Roscal wrote himself in the OCAU thread:

The name of the soft I used is Floworks (addon to Solidworks) but now I use Gambit 2.04 + Fluent 6 +Tecplot 9.2 to simulate and do studies about block. It's 100x powerful than Floworks but more complicated

[Paxmax]

Whaat the... ? When I stumbled upon this link I have been doing some doodeling on my PC at night since I couldn't sleep, and I came up with the exact same pic as seen upfront of this link!! Maybe not in fancy colors, but same amount of fins and arranged in the same pattern !!!

My inspiration was this: http://www.overclockers.com/tips977/
Truly a work of art(ist), and it seems to preform!
Well, you guys are well ahead of me, damn, another idea into the bin! Keep up the good work lads!

[bigben2k]

I'll take that as a compliment, Paxmax! I've seen your name on OC several times, nice of you to drop by for a visit! I think you and I may have a similar level of understanding.


One thing I forgot to mention: as per Roscal's own estimation, the block, tested as it is, would be 4 deg C hotter that White Watter.

I'm close, I'm really close...