6 ms·
Loopy Pipe Network Converts back-and-forth flow into one-way flow
- jarfil 6y agoIsn't this the same principle behind a Tesla valve?
- puddingnomeat 6y agohttps://www.youtube.com/watch?v=lFIYKmos3-s https://www.youtube.com/watch?v=lFIYKmos3-s
- colechristensen 6y agoI can see where you're coming from, being on it relying on differential pressures and turbulence to ensure certain flow characteristics... but then again, I wouldn't really say there was any particular unique concept at work here.
- robocat 6y agoSame same but different? Good video of a Tesla valve: https://www.google.com/search?q=youtube+%22Tesla+Valve+Explained+With+Fire%22 https://www.google.com/search?q=youtube+%22Tesla+Valve+Expla...
- andrewflnr 6y agoThere is still so much science to do with simple systems. Even if fundamental physics gets solved, there will be plenty of new discoveries to make.
- deleted 6y ago[deleted]
- puddingnomeat 6y agodoes this flow effect work with the water analogy of electricity?
- poleguy 6y agoI had to google it. It seems like it's at least plausible that it might: https://pubs.acs.org/doi/pdf/10.1021/nl070935e https://pubs.acs.org/doi/pdf/10.1021/nl070935e
- jojobas 6y agoThis relies on inertia so probably not.
- jcims 6y agoInductance is similar to inertia in the water model of electricity.
- jojobas 6y agoYes, but it's not directional. You don't get to make a T-joint of three coils and have the current follow the top bar as it's a straight line.
- CyberDildonics 6y agoDiodes don't work based on inductance.
- jcims 6y agoDiodes would be something along the lines of a check valve.
- andrewcchen 6y agoThe circulator[1] is an analogous component in rf, it send the incident power from any port down to the next port, so you can take one port to be the bidirectional connection, and it splits the signal into transmit and receive connections. [1] https://en.wikipedia.org/wiki/Circulator https://en.wikipedia.org/wiki/Circulator
- jcims 6y agoJust realized if it did this would make a very simple rectifier. I guess you could test it by putting ends of a wire with a galvanometer on it to different parts of an antenna and see if you get a current.
- spiritplumber 6y agoWonder if it works with liquids
- andrewflnr 6y agoAt least some of the tests were with water, so, yes?
- KMag 6y agoIt would be interesting to see if something like this could improve efficiency in valveless pulse jets. Valveless pulse jets rely on different inertia in two air paths to pull fresh air back in one of the exhaust pipes to refill the combustion chamber. Valveless pulse jets are loud and inefficient, but they're reliable, tolerant of manufacturing defects, and cheap to produce. Of course, acoustic effects providing the only compression above ambient pressure is going to fundamentally limit combustion pressures and temperatures, and thereby thermodynamic efficiency, but I think valveless pulse jets operate significantly below their Carnot / Brayton efficiencies.
- Animats 6y agoThis seems to be a known technology. Here's a paper: "THREE-DIMENSIONAL SIMULATION OF A VALVELESS PUMP" J. Shin and H.J.Sung", Kaist (2010) [1] It's not quite the same, though. Rather than using turbulence, it uses an impedance mismatch as an obstacle to flow. The idea is to have two impedance mismatches in opposite directions from the pinch point, but at different distances. You get some reflection from each impedance mismatch. So if you choose the right driving frequency, you get the reflections opposing movement in one direction and helping it in the other. This is a lot like the way some antennas are driven. RF also has impedance mismatches. But not turbulence. (Fortunately, or RF engineering would be really hard.) [1] flow.kaist.ac.kr/bbs/download2.php?bo_table=pro_domestic&wr_id=93&no=0
- vanderZwan 6y agoThere's also the Tesla valve, which of course isn't a pump by itself but uses similar principles https://en.wikipedia.org/wiki/Tesla_valve https://en.wikipedia.org/wiki/Tesla_valve
- deleted 6y ago[deleted]
- max-ibel 6y agoSeems related to Tesla valves? Fascinating stuff!
- klysm 6y agoA liquid rectifier?
- stevespang 6y agoBad title, implying flow of a substance is comparable to electricity
- tobmlt 6y agoI wonder if this is interesting to look at topologicaly? Flow dynamics picks out the network connectivity/handedness/etc... Maybe I am over thinking it while simultaneously under thinking it. ;) Paging V. I. Arnold just in case.