Making a Laminar Flow Nozzle

Making a Laminar Flow Nozzle


Hey guys welcome back i’m Nate with the King of Random and today We’re going to build a laminar flow nozzle Laminar flow refers to when water is traveling all in exactly one direction with no turbulence which means that when the exits a nozzle It has a perfectly smooth stream so the purpose of the video today is to learn how to build our own laminar flow nozzle without breaking the bank Here’s the supplies We’re gonna need for this build we have the four inch diameter plastic tubing you can use PVC or ABS We have two of these test caps we have a nozzle that attaches to a standard garden hose some epoxy putty coffee stirrer straws Some screen door mesh some scouring pads and a can of soda. Let’s start building This piece of PVC I have is a little too long we’re only going to need a piece about a foot long so first I’m just going to cut this in half, so it’s a little more manageable Now I’m going to cut off three rings from the PVC tube each one about 1/4 inch wide And now we measure for the main section of to which should be between 11 and 12 inches long Now that we’ve cut our pipe to length the next step is to drill holes in each of our test caps We want to use a drill bit That’s the same size as the narrow end of the threads that way it will have a nice tight fit in the end cap For the pipe fitting I have I’m using a three-quarter inch drill bit Later when we drill the actual nozzle We’re going to be using this 5/8 inch drill bit using one of the quarter inch PVC rings You’ve cut trace out the inside of the circle, on the 3 of the scouring pads Cut along the line and you’ll have three circles made from the scouring pads Cut through one of your quarter inch PVC rings With the PVC rings we want to figure out how much we need to cut off in order to fit the entire ring inside our PVC tube Use your first cut ring as a guide to mark on the other two where to cut Cut out three pieces of screen large enough that you have a little bit of a border around each of your PVC rings Empty a can of soda and rinse it out well Using a knife or a pair of scissors cut the top and bottom off of your soda can Be careful because the jagged edges of the can might be sharp You’ll want an unbent piece of the can wall about 3 inches square Sandwich a piece of aluminum between two smooth boards and screw it together tight making sure your screws go through your sheet of metal This piece of aluminum is going to be your nozzle where the water comes out Here’s where we’re going to use that 5/8 inch drill bit drill through the top board and the layer of metal beneath it By screwing into the metal sheet you should prevent any movement you get a nice clean cut Once you finish drilling undo the screws and remove your sheet of aluminum Trim the excess so you have about a 1 inch border around the hole you drilled Drilling has probably left a little bit of a burr on the aluminum so we want to try and sand that off using a very High grit sandpaper first I’m going to sand it with 400 grit sandpaper, and then with some trip a lot steel wool Alright guys quick update we have now cut prepped and prepared all of our parts And it’s time to start assembling our laminar flow nozzle first We want to take our three sponges and press them inside the tube Leaving about an inch and a half at the bottom next we want to attach one of our screens to the ring and press that Into the tube place the screen over the tube and then squeeze the ring together so that the gap is closed Using a knife or scissors remove the excess screen, but leave a small border around it Being careful to apply pressure to the whole ring at once Lower it and the screen down until it is pressed up against the sponges now what we’re going to do is fill the whole tube with the coffee stirrer straws You’ll want to make sure all of your straws are pointing the same direction So the water will flow smoothly if any of your straws go in sideways make sure you straighten it out We also want to make sure that the entire opening is full of straws so keep putting them in until there’s no gaps left Some people have tried building these with regular drinking straws and that might work pretty well, too But I think it works better using these coffee straws So with the sponges and the straws in place we have a device that will mostly get the water traveling in one smooth direction But we have a little bit of space after the straws and we want to make sure that the water doesn’t start picking up any Turbulence we’re gonna put in two more layers of the screens held in via the PVC rings Which should help prevent the water from building up any turbulence before it leaves the nozzle This first ring you want to push almost all the way down to the straw is leaving a gap of only about a quarter of An inch the second ring you only want to have about one inch below the top of the tube now We’re going to attach our flow nozzle to our end cap we’ll attach a piece of electrical tape to the flow nozzle But before we secure it on flip it over and line it up to make sure that the flow nozzle Hole is right in the center of the hole That’s drilled into your end cap press the tape onto the end cap to secure it in place Tape securely all the way around the flow nozzle, so there are no exposed edges Now that our flow nozzle is attached to our cap we’re going to fit that over our pipe It’s probably a pretty tight fit but with a little work You should be able to fit the test cap into the end of the pipe the last step before we test This is to attach our hose nozzle to the other end cap and attach that to the pipe as well If you’re having a hard time fitting the hose nozzle into the hole you’ve drilled into the cap you can expand it a little bit by using some sandpaper Once your nozzle is attached to the end cap press the end cap down into the pipe There you have it our laminar flow nozzle is now ready for a test fire before we make all of the connections permanent, okay So we’re gonna hook our laminar flow device up And I’ve removed the cap because we want to see the water as it’s rising up You can see just look how smooth this water is you can see through it almost perfectly because there’s no disturbance to it You can see some air bubbles are getting trapped underneath the screen and even down on top of the straws So I’m just gonna tip it try and get those air bubbles together and come out That is not laminar flow all right I’m gonna turn the water off put the cap back on and then see how this is flowing out Okay, you can already see this is working pretty well look at this little stream It’s a it’s just this nice clear jet you can easily see right through it I’m gonna try turning up the pressure just a little bit Alright once again, that’s a higher pressure. It’s still going pretty well There is a little bit of waviness right as it’s coming out of the nozzle so one thing I’m just gonna try I’m gonna turn off the water And I’m gonna sand down the nozzle just a little bit with some high grit sandpaper to smooth it out Just a tiny bit more feeling all the way around that that’s feeling pretty smooth by now There we go that is a nice clean stream, you can see right through it it looks really good Let’s seal this thing up and make all of the connections permanent alright as an update We’ve now tested this and after a little bit of additional sanding on the nozzle to make it extra smooth. It’s working pretty Well you probably saw that a little bit of water was seeping out the edges in the hose connector spot So now what we want to do is seal up all the connections so that it doesn’t leak at all this two-part epoxy putty is Strong waterproof and holds up under pressure just mix the two parts together until you have a uniform color And then you’ll have a minute or two to apply it to whatever it needs to be glued Alright now that our putty is mixed We’re going to take half of it and use it on the outside and half of it on the inside of our hose nozzle Well the putty is carrying on the hose nozzle We’re gonna use a little bit more of it on the top of the cap to hold that onto the device Boozing out all over as I squeeze this cap down onto the pipe And you use a little bit of extra putty to make sure that the gaps are really well filled that’s one side attached now Let’s glue on the other one The putty holding all of our nozzle pieces connected is now dry and we’re going to sand it just a little bit to clean up the edges This is all sealed up and ready to go, but before we hook it up to the hose again You know here at the king of random we like to decorate All right, we’ve got this bad boy all decorated. Let’s go hook it up to the hose again Here we go are working laminar flow nozzle You can see look how clean this whole line of arc is it almost looks like a piece of glass but of course if you touch it it splatters everywhere a Couple of tips if you’re trying to troubleshoot your laminar flow device because you’re not getting a nice smooth flow out of it you’ll want To be sure that you have at least two or three of those sponges down at the bottom because they really help slow the water Down so that the straws can do their job of straightening all the water out You’ll want to make sure that the straws are all packed in tightly touching the sides of the tube And if there are no gaps And they aren’t moving around in there the pieces of screen will really help Prevent any turbulence from building up in the space between the straws and the end of the nozzle and lastly Probably the most important thing is that your nozzle has to be extremely smooth it’s hard to spend too much time on this if you can feel even the slightest divot or burr or scratch in the aluminum nozzle Then that’s going to affect the water flow all right one of the main Indicators that you have a good laminar flow is that your water stays together as a cohesive stream all the way to the end Look at how the water coming out of this nozzle is still in a tight stream even when it’s hitting the ground When the water is truly moving with a laminar flow it’s amazing how clear it gets check this out There you have it the laminar flow nozzle as you saw it works Pretty well at low pressure at higher pressure the stream does start to get a little bit wonky And I know one of the reasons for that is higher pressure especially out of a garden hose is a little less consistent I have plans for the future to look into what I can do to make it so that we have more Consistent pressure so that at higher pressures our stream of water will travel farther Let’s do a quick recap of the build we took a piece of PVC and added a hose Intake valve the water is slowed down by running through some sponges And it’s then straightened out by running through some coffee stirring straws There are a couple layers of screen mesh at the end to prevent any turbulence from building up in the dead space after the straws In the tube it then exits through a perfectly round super smooth Hole all of which gives us a perfectly smooth stream of water with no turbulence So it almost looks like a stream of glass coming out of the nozzle There you have it you now know how to build your very own laminar flow nozzle without breaking the bank we are hoping that we can revisit this in the future to figure out how to add a little more pressure and Maybe some fancy things like putting lights into the stream of water Thanks for joining us for this project today, and we’ll see you in the next one taki then There’s a giant fly Now it’s a dead fly hello the clouds did part and the Sun did smile down upon them Really confusing they’re shot. It’s just like a drinking fountain with a lot of water coming out Hey guys Just jumping in here for a second to let you know that king of random t-shirts are coming back by your popular demand We’re bringing them back the day after Thanksgiving That’s November 24th So keep your eyes peeled here on YouTube and watch my other social media where we’ll be posting links to where you can get your own Progression is uncomfortable and it’s ok to feel awkward sometimes Because it means you’re pushing the boundaries on your comfort bubble right now The king of random brand is pushing the boundaries of our bubble and expanding as well and while we’re in this transition phase I just want to thank you for all you’re doing to support us

100 thoughts on “Making a Laminar Flow Nozzle

  1. Mom : what are you doing with that’s 🔨 Me:I am going to smash the like button and smash subscribe button to

  2. Well you still have a bit of disturbence in there. Perfect laminar flow makes it look like it is frozen. On yours you can still see that is actually water flowing.

  3. i understand that its hard to create laminar flow but you could've done better… it doesn't look like glass.

  4. i found an easier way actually. So i live at the philippines where some water is dirty so we need a water filter from the faucet so my mom made a homemade water filter using a square of cutout thick sponge thats new are used a rubber band to make it stay on the faucet, which coincidentally made a laminar flow

  5. 3: 46 “ alight guys we have now cut prepped an prepared all of our parts “
    He just said he cut prepared and prepared all of his parts 🤣🤣

  6. It doesn’t become less consistent due to the water hose… it’s due to Reynolds number haha noob step your fluid mechanics game up son

  7. Looking at this for memories it is crazy looking at how shy and short worded he is compared to having Cali he is so out there

  8. why not cut the pipe down to right after the straws and bypass the empty space and thus the need for the screens?

  9. Would an expandable bladder before the flow columnator (straws) serve to buffer the variable input pressures and allow higher nozzle pressure?

  10. Did anyone else come here just to find out what the f*** is a laminar flow? And now that we know, why do we need one? What will we do with it?

  11. Are you cutting PVC in your living room, or is your work space way cleaner and ten times more orgenized than my living space?

Leave a Reply

Your email address will not be published. Required fields are marked *