Recent content by manderson99

Sorry I meant to specify, 20-28g per second. And the gauge pressure (assuming standard 1 atm barometric pressure) would only need to be ~15 psi. That would be ~30 psi absolute pressure. 29.7 psi actually . . . It would need to be steam. Your numbers look okay to me, though the pressure...

Absolutely. That's why it's so dangerous to mess around with water injection. Well dangerous to the engine anyway . . .

What would be the best, cheapest way to generate steam intended for introduction to a device for testing? I would use a standard American 110v three-prong outlet as a power source for the steam generator. All I really need is a steam source with an absolute pressure of 2 atm/202650 Pa/29.39...

I'm not sure steam injection would do much good by cooling the fuel/air charge. The tube picking up heat from the exhaust in the units you cited from cars in the early 70s implies that they wanted to increase the temperature of the injected steam. Were it used primarily as a cooling agent...

Is there some reason why this craze passed? Or do you have any more information regarding this practice? I think you're on the right track here, though there's likely a different process involved, and carbon deposits may be peripheral to the reaction(s) of interest. Assuming you're talking...

Not sure if I can help you in any meaningful way here, but let me try rewording this so I understand it myself: You have a boiler that is generating steam at 23.5 bar gauge pressure. You currently have three separate valves permitting steam to escape the boiler. One valve feeds the...

Followup question: Given that the above-mentioned gas in the tube assumes a velocity of v2 immediately after exiting the tube where v2 > v1, is it safe to assume that the pressure P2 and density p2 of said gas will be the same as that of the quiescent gas in the open area? Or will that only...

Your answer makes sense. I have erred in assuming that the equation covers the quiescent gas in the open area rather than the gas ejected from the tube in the immediate vicinity of the tube's outlet.

Homework Statement An incompressible heated gas of constant temperature and pressure flows along an infinitely long tube at an unspecified velocity v1; a pressure of P1; and a density of p1 into an unheated open area of infinite volume containing the same gas at a lower pressure of P2; a...

D'oh! Oh well, thanks for letting me know. I'll do my best with what's available.

Hello! I've been looking for coefficients to use with the Shomate equation for n-octane (C8H18), but I have been unable to find any. The NIST Webbook lists some gas phase thermochemistry data: http://webbook.nist.gov/cgi/cbook.cgi?ID=C111659&Mask=1#Thermo-Gas but it omits the Shomate...

Yes, that's generally what I was thinking of when I mentioned lasers. AMD/Globalfoundries and Intel (at the very least) both use immersion lithography, which is a form of the process which you describe. I believe the typical form of light used for immersion lithography is a 193 nm ultraviolet...

That's fine with me. My guess is that, given a horizontal flat plate with only conduction, the lanes would flow nearly vertically away from the plate over the majority of its surface (especially towards its center), and that they would begin to flow outward at a slight angle near the edges...

Yes, and actually, that manufacturing technique would work nicely provided the etching could reach a depth equal to the intended length of the aforementioned cylinders. Well, maybe. And there's still the issue of using any kind of laser on aluminum. They would be quite fragile. I am...

Yes, I would imagine so. I know silicon immersion lithography has achieved amazing precision with 193nm UV lasers, but that wouldn't be so good for aluminum. I had originally planned for .5 mm length cylinders. Interesting thought about wires. I am now looking at 250 micrometer diameter...