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Dorm Room Engineering
Добавлен 13 авг 2015
I'm a mechanical engineering student designing and building things that I think are cool. Enjoy!
Ansys Fluent Tutorial | How To Simulate Airflow Over An Airfoil In Ansys Fluent | NACA 4412 Airfoil
A tutorial on how to run a CFD simulation of a wing cross section (airfoil) in ANSYS Fluent, including airfoil sourcing, setting angle of attack, lift and drag concepts, and more.
Get ANSYS Student for free: ruclips.net/video/Qx26k_AHHI4/видео.html
Link to Ansys student: www.ansys.com/academic/students/ansys-student
My Instagram: lukeironmanjackson
Get ANSYS Student for free: ruclips.net/video/Qx26k_AHHI4/видео.html
Link to Ansys student: www.ansys.com/academic/students/ansys-student
My Instagram: lukeironmanjackson
Просмотров: 20 448
Видео
How To Download Ansys For Free | Free CFD & FEA Software
Просмотров 7 тыс.2 года назад
A quick tutorial on where and how to get Ansys student, a powerful Computational Fluid Dynamics and Finite Element Analysis tool, for free. Link to Ansys student: www.ansys.com/academic/students/ansys-student My Instagram: lukeironmanjackson
Designing And 3D-Printing A Universal Joint With Audodesk Inventor Pro
Просмотров 5742 года назад
Step-by-step design, upload, and 3D printing of a universal joint using Autodesk Inventor Pro and Ultimaker Cura. Suitable for all levels of CAD experience, including first time use. Subscribe to see more how-to's for engineering design, modeling, and more! Download this part!: cults3d.com/en/3d-model/gadget/universal-joint-lukejack My Instagram: lukeironmanjackson Get the 3D pri...
How can you feed people with this s***t being so confident? An impressive skill. 6000 Cd? For real?! List of critical mistakes: -shitty mesh without inflation layer around the foil; -wrong turbulence model absolluetly; -no reference values have been set for propper coefficient calculation. My suggestion, delete this, fix mistakes, upload again. It is an anti tutorial, harmful one.
Good video about CFD, but your explanation about the lower pressuere on the top of the airfoil (19:40) is wrong, the igual transit time "theory" is wrong because don't exist any type of physical principle that implie that the air on the top must reach the end of the airfoil at the same time that the air on the bottom, in fact if you analyses a wind tunel experiment you will see that the air on the top reach the end of the airfoil before the air on the bottom what proof that your explanaton is wrong. ruclips.net/video/UqBmdZ-BNig/видео.htmlsi=ZWkgGfPqWnOamMJH Here is a video of a wind tunel.
what to do if its showing "Edge joints generated" as 0???
Hi.Can this ansys fluent give the optimized airfoil (optimied by ansys fluent itself) so i can have a excel file to import it to catia to 3D printing?
When I see the inlet velocity directed Normal to the Boundary, my eyesore came back.
thank you so much for this!! first time using ANSYS and i needed to model a glider, this was a great start!
I keep getting an error about bottom curve coordinates I can’t create a curve area my bottom curve isn’t intersect the origin PLEASE HELP
You will likely have to zoom in on the trailing edge and connect the two points at the very end with a short line. This should fix your continuity issues
hi bro. i am ur 100th subscriber. ur video helped me a lot in my project review. i am so grateful to u. love from INDIA.
Thank you for subscribing! I’m glad I could help. Much love to India!
Hey why is the Cl and Cd so high? Are we messing with the units?
Part of that is due to the increased angle of attack. Also, I believe my model was in inches
Yeah, hes just messing with this video. LOL. But a good introduction to airfoil simulation though.
Many thanks to you
Why would the fluid flow be normal to boundary? Should it not have an X component instead, as being normal to boundary will disrupt a free-flow condition?
How can we select the two edges
Ctrl+click, or cmnd+click for mac
good video, i am having some doubts . for this case i want to write a coefficient of moment also for the different angle of attack. what are the moments points and moment axis i should consider. and for also 3d cases similar like this one i wanna know about the co eff- moment . kindly explain me .
Thank you so much!
I think you should use k-omega SST, rather than k-epsilon, as k-epsilon is not very accurate in adverse pressure gradients, so not viable for aerofoils. It might not show a problem here, but at higher angle of attack it will not simulate the flow correctly, as it does not show flow separation. You could also see that you lift and drag coefficients were really wrong, they usually have values around 0-2 for Cl and like 0.015 or so for Cd, definitely not 6000. You should also do mesh refinements rather than making the whole area really fine mesh.
I am not able to make a surface out of the sketches as the last pointis missing from the coordinates from the site itself... What should I do?
In sketch mode you should be able to zoom in on the trailing edge corner (where the point is missing) and draw a line to connect the two points that are present. Once you do this, you will be able to crate a line from the sketch, then a surface from that line and the line created from the coordinate file.
@@dormroomengineering8689 Thanks a lot, though I have proceeded with it already and was curious, on how you proceeded without the need of doing it...
Unassigned interface zone detected for interface contact region,,,, how i can solve this issue during intialization it happens
Why is the Cl coefficient so high?
Hey, After I have given Initialize in the hybrid initialization, it says "WARNING: unassigned interface zone detected for contact_region-trg" and Unassigned interface zones found. Flow is not initialized. Any help would be much appreciated. Really need it.
When making the geometry, after importing the coordinate file, did you draw a line to connect the points at the back of the airfoil?
@@dormroomengineering8689 actually I solved the issue. I didn't mesh it properly. Thankyou anyways😁
I am got the same issue,, how u solve that issue
@@sudarshanjagannathan4864 i got the same issue,, how u solve this
@@dormroomengineering8689 bro i got same issue can u help me
Hey in contour plot , I dont see surface_body , i see only inlet, outlet, interior surf body, wall surface body. pls help
If you're in setup go to Results -> Create (under Surface) -> Zone -> surface-body (on left) -> create it will show up. I had trouble getting it to work too.
Caveat is that it's limited to only 4 cores, which makes it even slower than the already abysmally slow full version. Have a look at FluidX3D, that does in minutes what Ansys takes months for, and it's free for non-commercial educational use, with public source code, and without any restrictions on hardware. Download size is 22MB :)
Cheers for this solid video, really comprehensive, helped me a lot when my usual method kept crashing :')
Thank you! Always happy to help!
"Free Software Download"? Let me guess... It ain't FREE. Was I right?
Nope, 100% free. Ansys provides a completely free version of their software package for students with no login required.
technically free but limited feature u can only create a mesh like 1 million cell yes for full scale fluent analysis it wont work especially marine model like ship it take more than 1 million cell
Brother the coordinates imported always have the tail area open (upper region not joined with the lower one) so I can’t generate surface from edges as can’t get edges joints generated.
I’ve had that happen to me a few times as well. The gaps have been very narrow in my experience so I’ll usually make a line to connect the two rail points and complete the surface. Since the gap is narrow, the line rarely hurts the simulation (it’s actually more accurate to manufactured wings since they almost always have a thin flat end at the back of the airfoil). If you need a very fine tip, you can also alter the coordinate for one of the tips so that they join together. Hope one of those works!
@@dormroomengineering8689 hi how do you draw this line connecting the two points?
@Dorm Room Engineering nvm I figured it out
@@Onepiecefan609 Can you tell how? I'm having the same problem
@@HameezAqeel edit your coordinate system so that it connects the dots.
This is the best airfoil fluent video i ever seen..great job
Thank you!
Great video man. This really helped me to get on my foot on Fluent and ace my CFD project. God bless u!
Always happy to help!
Thank you....but Im not a student. So what about non students ? Also, what is the catch - is it a 30 day trial ? You say the mesh size is limited. Can I run a test on a car model to test out modifications for drag reduction ? I know that OPENfoam is freeware and quite capable, but I'm a very visual person. I don't understand code. Big buttons that are on a basic U.I. is what I hope for. -Thanks
The only catch for Ansys student is the limit on the number of elements in your mesh. You don’t need to prove that you’re a student. It will work just fine for modeling the aerodynamics around a car body until you get into the very fine boundary layer analysis level, and will provide very helpful visuals to help you interpret the data.
@@dormroomengineering8689 That sounds great ! I'll give it a try. BTW, I noticed when you download, there are loads of other programs included. That explains the massive space needed. I'll have to ask them if there is a way to download just the CFD program.
Thank you. Please how I can reduce the number of meshes or if there is another solution to this error " [error] Setup1: Mesh size (64002 volume elements) exceeded Ansys Electronics Desktop Student limit.
That sounds like an element size problem with the student license. You’ll have to increase the mesh size be selecting mesh, and mesh size in the info box until the mesh no longer exceeds the maximum number of elements allowed in Ansys student
@@dormroomengineering8689 Thank you so much
Thank you for this! This will help me with my third year project on studying suction and blowing flow control on an aerofoil and how it affects aerodynamics :)
Happy to help!
Hey I'm doing the same. Mind filling me on the details? My lift and drag coefficients are in the millions
great >thanks
This is awesome!
Very cool. One comment for extruding out holes, you don’t have to enter a number for that. Inventor has a “through all” button that will basically cut to infinity if a part exists there. I appreciate the commentary for 3D printing tips, I’m still really new to the whole process so considerations for things like material spillover is a useful thing to think about. Great start with your channel!
Thanks man! I legitimately did not know about that button; another reason to get educational content out whenever possible. I’ll definitely do more 3D printing videos too, there’s a lot that I didn’t know about going in that turned out to be really important. Thanks for the suggestion!
This is super cool man