Now anyone can simulate flow for a 3D printer duct

Рет қаралды 81,576

NeedItMakeIt

Күн бұрын

Пікірлер: 106

@CubyFormOfB 4 ай бұрын

Typically you can assume air is incompressible below Mach 0.3, so it is a perfectly acceptable simplification here.

@TheOfficialOriginalChad 4 ай бұрын

Correct, but a little out of context, no? I would think it can be simplified like this in open atmosphere, but not in a nozzle, as pressure changes Mach. For example, surely an air compressor moves air at a high pressure but low velocity, but that doesn’t mean the fluid isn’t compressible by an air compressor.

@CubyFormOfB 4 ай бұрын

@@TheOfficialOriginalChad Right, it's all about using the easiest equations you can get away with for a given scenario. In this case, especially being fan powered, I would assume a very low mach with little pressure change.

@williamhumber5890 2 ай бұрын

@@TheOfficialOriginalChad As long as the mach number in the nozzle is less than 0.3 you're fine with incompressible. Given the pressure ratios involved in these kinds of blowers, running incompressible would be completely unnecessary.

@TheOfficialOriginalChad 2 ай бұрын

@@williamhumber5890 You’re not wrong…yet. You need to know the pressure in the nozzle to know what mach 0.3 is…so whats mach 0.3?

@williamhumber5890 2 ай бұрын

@@TheOfficialOriginalChad He's using a CPAP fan, the pressure rise on those is typically one the order of 300-400 Pa. You're not going to get anywhere close to needing to account for compressibility effects. Second, for just looking at particle tracers like the video is doing incompressible vs compressible won't matter anyway.

@fabiolessaaco 15 күн бұрын

As an aeronautics and mechanics engineer that likes to take a more professional take on my 3d projects I would like to say THANK YOU. Your content is truly top notch.

@danturismo 4 ай бұрын

I tried using Simscale about 9 months ago to simulate airflow through a nozzle and I just couldn't figure it out. This is EXACTLY what I needed! Thank you! I've now been able to finish my project 😊

@edriyin 4 ай бұрын

Nice video, if anyone get curious about fluid simulations, this is actually eulerian control volume. And you don't need compressible flow dynamics in this case. Flow is probably too slow and temperature effect is negligible to create compression. In this problem turbulent flow characteristics is more important. Keep up.

@Chad.The.Flornadian 4 ай бұрын

I love how cool it looks with the simulation. Unprecedented levels of detail you just can't get otherwise.

@mobiobione 4 ай бұрын

Well I just followed your video and had wild success! This video has now upgraded my desiging toolbox considerably. Thank you.

@rorywquin 3 ай бұрын

Wish I knew this a few months ago when I was designing a new duct for my E3V2 Sprite mod. I struggled and failed using "Teaching Tech” method, but IIRC his tutorial was on an older version of SimScale. Anyhoo I can now run it and see how effective my duct is. Thanks.

@VertexCarver 4 ай бұрын

That is a wicked progression on the topic. Thank you for diving into this!

@Roy-K 4 ай бұрын

Holy cow, I wanted to use SIMSCALE for some fluid analysis at work something like eight months ago, but I had no idea how to do a proper simulation; thank you so much for this demo/tutorial, and very interesting results on the ducts!

@gianlucatomasello9492 4 ай бұрын

There is a thing with CFD analysis. Simulations are not really that hard to setup, but really hard to comprehend and validate the results. They are not just a bunch of red yellow and green lines.

@Davids3DProjects 4 ай бұрын

Wow that's awesome. I wish I had that a while back when I was playing with fan ducts. Keep up the good work!

@SuborbitalSciences 4 ай бұрын

Great work, I’m glad to see that you decided to do this. Thanks for sharing!

@802Garage 4 ай бұрын

Too awesome! The comparison between the simulation and the sparkle water flow is amazing. I think some more comparisons with the real camera and virtual camera at the same viewing angle could help with the comparison even more. Great work!

@williamhumber5890 2 ай бұрын

While it creates some interesting visuals, that comparison is not particularly meaningful. The second nozzle he did the comparison is wildly misleading as all of the flow structures you see are really due to the free shear layer interaction between the air and the liquid rather than showing what's happening in the air.

@802Garage 2 ай бұрын

@@williamhumber5890 It's not that it shows exactly what is happening or gives us a perfect simulation. It simply gives us a visual to identify some ways the duct is behaving. For example if most of the air is directed at a specific angle or if it is creating a spiral. It's a single tool with limited applications, but still interesting.

@williamhumber5890 2 ай бұрын

@@802Garage I hear what you're trying to say, but what I'm trying to point out is that particular comparison (looking at the behavior of the rheoscopic fluid) can show physics that are completely different from what is happening with the gas flow from nozzle.

@802Garage 2 ай бұрын

@@williamhumber5890 I agree. Can't take everything at face value. Gotta put your thinking cap on. Even having exact air flow models can heavily mislead you. What you need is results. 😁

@artspam 4 ай бұрын

It' s a nice iteration on TT's video, with the alternative method of setting up the volume and the different setups. Well done!

@GMx_1 4 ай бұрын

Very good video - some great ideas here and that software looks like it could really be a winner.

@SolonTh 4 ай бұрын

You're doing gods work dude. I've always felt the default cooling on the V400 is insufficient. And this has inspired me to try a custom solution without upgrading the fans

@leesmithsworkshop 4 ай бұрын

I just followed this with a nozzle I made for the Orbiter V3 on a tool changer mount. will tag you on my community post so you can take a look. It's a simple single duct, but it does work as expected based on your example.

@BloodSteyn 4 ай бұрын

Going to have to watch this video a few times to understand it fully, but it looks pretty damn amazing.

@hangtight71 4 ай бұрын

Been doing this for a while. You will get much more representative results if you specify a volumetric flow rather than a flow velocity. generally for a 5015 the volumetric flow can be considered to be approximately proportional to the total nozzle outlet area/ total fan outlet area, eg a duct with 50% nozzle outlet area compared to the outlet of the blower will have approximately 50% of the maximum blower flow at zero pressure drop.

@matts2581 4 ай бұрын

Way slick idea for the particle stuff in the water. !!! :)

@StevenIngram 4 ай бұрын

It seems to me that your test rig could use a mount to attach it to the bowl. Perhaps one that flips up like the arm of a record player so you can change out the ducts like changing the stylus. (I hope I my example isn't too dated. LOL) So, when you lower the arm, it would hold the rig at the same height and location every time. :)

@ProductiveAbel99 4 ай бұрын

That is great experiment. as a piece of advice you can use colored air

@YHK_YT 3 ай бұрын

i tried using this like a year ago to simulate airflow isnide a warehouse but i couldnt figure out how to get it working so just gave up. thank you for clarfying things!

@telmonogueira5881 3 ай бұрын

Subscribed from Brazil 💥

@coder543 4 ай бұрын

I was hoping this was going to be a demo/tutorial of OpenFOAM.

@kevin08750 4 ай бұрын

With OpenFOAM you can to much more 😂

@C-M-E 4 ай бұрын

Same! I have paid sim software but have openFOAM dl'ed and waiting for a few days with free time to try it out.

@nathan22211 4 ай бұрын

only issue with OpenFOAM, at least when I looked at it, it's Linux only so maybe not ideal for him

@martinmckee5333 4 ай бұрын

@@nathan22211Open Foam can be used with Windows as well, though it is more difficult to create custom solvers than on Linux. The basic, built in, solvers work fine though.

@hmramsay 4 ай бұрын

@@nathan22211 can be run in windows as long as you have the windows subsystem for Linux enabled

@charlvanniekerk8009 4 ай бұрын

This is going to be interesting!

@stevesloan6775 3 ай бұрын

I’d love to see this style of air flow implemented on ITB’s. I’m sure nice laminated flow could work. Maybe make it go to the back of the car and then back to the front. Just saying 😁

@brocktechnology 4 ай бұрын

People put a lot of effort into these cooling solutions, I just got a naked blower style fan mounted with stiff wire blowing in the general direction of the part and it works fine. I'm sure it could be improved but perfect is the enemy of good enough.

@santiagopostorivo 4 ай бұрын

But in some cases, you can tune it to work even better. If you have two fans or a dual duct of one fan where the airflow collides, you are wasting performance. He already showed that having a slight offset between the two improves the performance.

@SianaGearz 4 ай бұрын

Honestly you can do a LOT WORSE than the naked fan by trying to make it better. I have seen a lot of things that are worse.

@santiagopostorivo 4 ай бұрын

@@SianaGearz that is why you also test it in the real life. I have gotten better results from my designs that any other duct or the creality original duct. It all depends on what are you designing. You won't get the performance of high performance cooling systems, but you can make it better. Testing in real life is also important

@DaveEtchells 4 ай бұрын

It’s _insane_ that hobbyists and inventors can sit down at a computer and run CFD modeling for free and in just minutes. Back in the day this would have been hours of processing on a supercomputer. (Although incompressibility does simplify things a whole lot.)

@DemonTied 4 ай бұрын

There is so much free resources on the internet nowadays, it’s absolutely absurd. This ease of sharing and finding free information is the core reason our knowledge and tech is expanding at the accelerated rate that it is. It’s amazing!

@Kaliumcyanidful 4 ай бұрын

60m/s is a Little fast imo. It is almost 220km/h or 1/6 of the speed of Sound… aka local hurricane. to Calc a realistic value check the volume flow in the datasheet and calc the avg speed with the diameter of the inlet. Ideally add the pipe from the Fan to the inlet into the Simulation.

@PatrickHoodDaniel 4 ай бұрын

Very cool. Question: have you though about a venturi design where you can separate hot and cold air? I know this video is not about the design but more about simulating air flow, but it triggered that thought.

@herrkulor3771 Ай бұрын

You mean Ranque not Venturi

@PatrickHoodDaniel Ай бұрын

@@herrkulor3771 Yeah, I couldn't remember the name when I made the comment. But it's a device by Exair.

@dominicafonso 4 ай бұрын

It would be valuable to see the physical model you used as a simulation. I suspect the fluid surface behaviour will be quite different to the air flow.

@mobiobione 4 ай бұрын

Right then! Off to do some Simulating!...

@stefanNT_1008 4 ай бұрын

This project is shaping even better than expected! I am going to go on an limb here and ask if you can design an upgrade for the Ender V3 se, i am currently struggling with a single 5015 cooling solution, but I feel it can be much improved. Cheers!

@nathansantos.n8 4 ай бұрын

what if we add a deflection flap on the silicon shroud on the hot end / nozzle to curve the airflow in the 'dead' zone might be helpful on overhangs that are oriented away from the ducts if the duct design is already blowing majority of the air in one direction

@mariusj8542 4 ай бұрын

Perfect! - I have been fiddling with fusion to try to figure this out, but never succeeded.

@bwimtg 4 ай бұрын

what is the logic behind the volume needing to be inverted before importing into simscale? this seems odd to me.

@ericcmcgraw 4 ай бұрын

You're simulating the gas volume, not the solid nozzle geometry.

@pavelfabian1096 19 күн бұрын

and how to do it also :D

@fluxcapacitor 2 ай бұрын

Great content! Just a bit weird that you never cite the name of the software though, as if everyone knows it already.

@EugenioNS 4 ай бұрын

such a great video and explanation

@dolphin6782 4 ай бұрын

This is a really neat concept, but I do want to mention that there's a very high-pitched buzzing sound starting around 7:40 and is intermittent from then on that makes it hard to listen to for me as someone with sensitive hearing. Regardless, I appreciate the video and instructions provided. Thanks!

@MStoica 4 ай бұрын

It's like Physics in school... I could see what's happening, I just couldn't understand what it means or why do I need to learn it :) Also, not sure what's with that duct piece, what is it for and do I have that in my printer somewhere? Or is it just in Prusas? (I think I heard Prusa at some point) But cool video, nonetheless. Looks like a lot of work has been put into it, like all your videos. And your videos are interesting, informative and useful (I can understand the other ones :D) +1 sub

@JeffBradway 4 ай бұрын

I was hoping to see some actually free simulation software. Some do exist, but not really with such smooth workflows as this, Ansys, or Fusion itself. I did get some hope when I saw the Simscale warning about numerical results not being available. For these simulations visual is probably just fine.

@n1_3d_print Ай бұрын

is there a way to get a STEP / F3D file from the ducts because i want to edit some small things and im not that good in CAD to model a duct and i want to add a cartographer / beacon mount

@DrDoohickie 4 ай бұрын

This is sooooo cool. It looks like setting it up was a breeze. How did you catch wind of this program? Will you be testing all of the submitted designs using this setup or will you wind, errr, wind up only doing a few designs?

@kurisutofusan 4 ай бұрын

Why do you need to create a volume around the parts (the big cylinder)? Is it to limit the area of the simulation?

@Collateralcoffee 4 ай бұрын

Would be so nice to have the models for the Q1Pro...

@nickpunch9661 4 ай бұрын

Nice video. Im confused on how you re getting your numbers though

@JernD 4 ай бұрын

Awesome video!

@ahbushnell1 4 ай бұрын

I'm impressed.

@gqualls2366 4 ай бұрын

In aerodynamics, “compressible” flow means supersonic flow where you’ll need to calculate shocks, etc.

@kilianlindlbauer8277 4 ай бұрын

Rule of thumb is anything below 100m/s or 1/3 of the speed of sound is incompressible, the error is really marginal, especially when using fans which low maximum pressures. A ws7040 is also very much incompressible

@dennisgignac5103 4 ай бұрын

Thank you again !!!

@kimmotoivanen 4 ай бұрын

These simulations *could* work IRL, *if* input stream was ideal - laminar flow and constant velocity across area. In reality, that is not the case. Not with turbulent CPAP tube. Very much not with hugely varying flow across 5015 exit. I wouldn't count too much on pretty and fancy looking "science" 😬 (or should we - working with the unseen - say séance 😅) I'm not saying simulation can't be used as *starting point* for testing and refinement based on *measurements and observations* - but until that it's pretty much _assumption in, assumption out_ 🤷‍♂

@Kaliumcyanidful 4 ай бұрын

Yep. The turbulence could be included a little bit by including the pipe, starting from the Fan and leading to the inlet

@OutOfNameIdeas2 4 ай бұрын

Especially since the 3d printed lines... Extremely turbulent airflow

@ry7hym 4 ай бұрын

3 minutes ago! perfect video to watch during lunch right now

@95GTSpeedDemon 4 ай бұрын

Lunch? Funny thought as its 7am here lol

@beeopper 4 ай бұрын

@@95GTSpeedDemon 3pm here, funny how timezones work aye

@garrettslobey9204 3 ай бұрын

Why does no one build a diffuser on their ducts for part cooling ducts? Like a gas lens for a tig torch?

@NeedItMakeIt 3 ай бұрын

I'm not sure, can you explain what you think the benefits would be?

@garrettslobey9204 3 ай бұрын

@@NeedItMakeIt it helps to completely cover part in airflow. I'll see if I can find some tig videos that really show how much a difference a diffuser make, at least with shielding gas

@trt969 4 ай бұрын

Man I love your videos! Holly shit! Keep it up!

@TheDarkrider551 4 ай бұрын

Someone needs to do a very simple coding tutorial for fluidx3d ive been waiting for about a year for a good one...

@Splarkszter 4 ай бұрын

Is it hardware simulation or cloud(another person's computer) simulation???

@nathan22211 4 ай бұрын

with Fusion it's either or I think. though there are some open source CFD software but the only one I know of is Linux only

@ml1186 4 ай бұрын

Maybe you could just pump the water through the duct instread of air, somehow and place the whole thing in the water

@OutOfNameIdeas2 4 ай бұрын

Its broken. It doant detect the faxes on the mdoel and thinks its all just one single face

@IronMan-yg4qw 4 ай бұрын

awesome.

@FormerlyKnownAsAndrew 4 ай бұрын

MOAR DUCKS! 🦆

@ThisisDD 4 ай бұрын

I'm interested to see how this looks on my designs. They work the way they are designed but I'm curious to see if my imagination is doing its job properly!