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phide · 05-23-2006, 01:27 AM

In the Storm blocks, the tiny pin in the bottom of each cup is responsible for increasing turbulance and further disruption of the boundary layer. A turbulator is really an aircraft term, but the function in the Storm is pretty much the same. Cathar and Swiftech call them "jet disrupters", but I kind of like the term microturbulator a little better. Use whatever term you wish.

Your school will have no tool that can properly form the cups. If you should dig around and find a ~2mm flat-bottomed cylindrical carbide bit with a tiny <.25mm indentation, I'd be pretty surprised. It's possible you may be able to source the bit for the jets, but I'm not certain of it.

It would be a gargantuan task to try and beat out the effectiveness of the Storm design across a broad range of flowrates as Cathar as done. It's one thing to design a practical, functional jet impingement block by referencing and calculation. It's another to make the block perform well at a variety of flowrates. That demands a fair amount of knowledge of a number of aspects of watercooling - not just block design. There are some things one can do to improve performance at one end of the spectrum or the other, but I doubt Cathar will tell you what they are even though you aren't seeking profits.

He probably came to the conclusion that flat-bottomed cups are ideal by referencing existing white papers and through his own simulator. As far as I can tell, the jet inlets are just chamfered once. Nothing terribly fancy.

I'm unfamiliar with copper tellurium, but its thermal conductivity is 205 (BTU/(hr degreesF ft^2/ft) while silver is 235 BTU and copper at 223. So its thermal conductivity, compared to pure copper, is poor. This is typical with all alloys, even silver/copper alloys. Silver also has the advantage of being somewhat antimicrobial in nature. There are a few scattered companies that produce fittings and tubing that release a slow stream of silver ions and effectively keeps bacteria from forming on their surfaces.

05-23-2006, 01:27 AM	#14
phide Cooling Neophyte Join Date: Feb 2006 Location: Los Angeles, CA Posts: 41	Re: CNC milling machine at my disposal In the Storm blocks, the tiny pin in the bottom of each cup is responsible for increasing turbulance and further disruption of the boundary layer. A turbulator is really an aircraft term, but the function in the Storm is pretty much the same. Cathar and Swiftech call them "jet disrupters", but I kind of like the term microturbulator a little better. Use whatever term you wish. Your school will have no tool that can properly form the cups. If you should dig around and find a ~2mm flat-bottomed cylindrical carbide bit with a tiny <.25mm indentation, I'd be pretty surprised. It's possible you may be able to source the bit for the jets, but I'm not certain of it. It would be a gargantuan task to try and beat out the effectiveness of the Storm design across a broad range of flowrates as Cathar as done. It's one thing to design a practical, functional jet impingement block by referencing and calculation. It's another to make the block perform well at a variety of flowrates. That demands a fair amount of knowledge of a number of aspects of watercooling - not just block design. There are some things one can do to improve performance at one end of the spectrum or the other, but I doubt Cathar will tell you what they are even though you aren't seeking profits. He probably came to the conclusion that flat-bottomed cups are ideal by referencing existing white papers and through his own simulator. As far as I can tell, the jet inlets are just chamfered once. Nothing terribly fancy. I'm unfamiliar with copper tellurium, but its thermal conductivity is 205 (BTU/(hr degreesF ft^2/ft) while silver is 235 BTU and copper at 223. So its thermal conductivity, compared to pure copper, is poor. This is typical with all alloys, even silver/copper alloys. Silver also has the advantage of being somewhat antimicrobial in nature. There are a few scattered companies that produce fittings and tubing that release a slow stream of silver ions and effectively keeps bacteria from forming on their surfaces.