Recent content by Grey Area

Again, speaking from very little knowledge...I don't THINK so...that's a Venturi, if I'm right, which is (in my "science for five year olds" language) a little hole in the restricted area, which pulls external material in from a higher pressure region if the angle of expansion of the pipe after...

MY concerns are specific, but to a theoretical situation that is not currently a real world situation...but could be. Well, that was as clear as mud... OK...I'll try again. Fluids leaving a pipe disperse as soon as they leave the nozzle...so the stream broadens with distance, interacting with...

I wouldn't be asking here if I had the first clue...so this is just an assumption... Apply Benoulli first, treating the two pipes as a single overall reduced flow from the original (so just use the sum of the cx areas), then just divide the result in proportion to the cx area of the pipe...

It's perfectly possible my understanding is wrong. this is the image I associate with the Benoulli Effect (not principle, perhaps that is part of the confusion; My interest is, how does this effect apply when there is more than one restriction; Sorry - should have coloured in the...

"In the land of the blind, the one eyed man is king"...i.e., you already know more than me sir...thank you. This is the crux of my question though...in a single pipe, narrow the pipe and the fluid MUST speed up according to Bernoulli's principle to maintain the flow (as far as I understand it)...

Hi al;l, it's Mr. ALKIADT again (A Little Knowledge Is A Dangerous Thing)...in this case, my knowledge of Bernoulli effect. I know that when a fluid passes through a restriction, the flow rate speeds up to maintain the flow rate of the wider cross sectional area behind it...so if you've got one...

OK took some screenshots of the tinkercad page...hope they help.. The setup; The other design options;

Sorry Russ, didn't realize...I'll get on with an image straight away...

All gone very quiet...can anyone access the link? I know some people have problems. I can produce a (poor quality) diagram instead if it helps...

The good thing about HAIVNG a 3D printer is you could provide some science-backed suggestions for improvement, I can (probably) turn it into a working prototype within a couple of days (I'm not the fastest, but I'll not burden you with why at this stage) so I could include your suggestions in...

In the few minutes while I create it, prepare yourselves for the worst "technical" diagram you have ever seen...back soon... Actually I might be able to spare you that fate...it's still my file but this is a (reasonably) accurate mockup of the working area of our 3D printers...in this specific...

Thank you jrmichler. In my designs I was thinking of using broad "slots" to maximise velocity but at least cover a wide surface area. The inlet of the fan is 175 square millimetres, so if I split it into four vents each 40 millimetres (so 160 total to build up some pressure) they could be...

One more question, sorry.. I know it's commonplace to "rifle" taps with a spinning pattern to "focus" the stream of water...is there any similar principle that could be applied to cooling air? I have read about turbulent flow in heating systems, but that seems to be specific to material that...

Thank you for the advice. As you've describe it is kind of as I imagined it...the "air memory" thing I thought was particularly in evidence in things like tornados and the vortex cannons that area favourite of science shows in America; an equilibrium state that persists...with of course other...

HI all. A bit out of my depth here...degree is in chemistry, but that's not helping me with the real world problem I'm trying to solve. I have a single air inlet that's being used as a cooling stream. It is channelled by a duct (or ducts, there are a few available designs) onto a piece of work...