![Interfluo](/img/default-banner.jpg)
- Видео 38
- Просмотров 511 660
Interfluo
США
Добавлен 17 фев 2021
Hi, I am a recent Aerospace Engineering graduate. While on the job search after university I decided to continue my studies, especially in the field of CFD. I found many useful videos and tutorials, but all of them seemed to skip a step or be using slightly different software which often led to something going wrong. Issues often were extremely difficult to diagnose and fix as a beginner and I often failed. On this channel I will upload high quality tutorials along with videos explaining specific parts of a simulation or theory. The channel is structured to give fairly high level walkthroughs while providing more in depth videos for interested viewers. I am simply making the channel I wish had existed while I was learning.
AI Style transfer relaxing background (no ads in middle)
no ads in the middle
relaxing background video of a bird wading through water with van Gogh style transfer applied.
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music:
Fluidscape by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0/
Source: incompetech.com/music/royalty-free/index.html?isrc=USUAN1100393
Artist: incompetech.com/
relaxing background video of a bird wading through water with van Gogh style transfer applied.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
music:
Fluidscape by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0/
Source: incompetech.com/music/royalty-free/index.html?isrc=USUAN1100393
Artist: incompetech.com/
Просмотров: 343
Видео
OpenVSP to CFD Mesh + modeling control surfaces in OpenVSP for CFD
Просмотров 7 тыс.2 года назад
Download openvsp: openvsp.org/ OpenVSP hangar: hangar.openvsp.org/ openvsp,pointwise,cfd,meshing,openfoam,aircraft design,vsp,parametric,tutorial,inflation layers,iges,trimmed surface,watertight,geometry,airplane,cad,openvsp to cad,wing design,wing design software,pressure distribution,ultralight airplane design,wings of aero,engineering,openvsp wing,openvsp export,piper tri pacer,openvsp tutor...
4K NASA Launch Background | No ads, no music, HD
Просмотров 5442 года назад
4K NASA Launch Background | No ads, no music, HD source: images.nasa.gov/ nasa,spacex,nasa moon mission,space,science,space shuttle launch,space shuttle,apollo,mission control,saturn v,saturn 5,valkyrie,xb70,x15,b52,rocket launch,background music,relaxing music,space music,bakground music,music,relax music,sleep music,dream music,music video,new age music,calming music,ambient music,relaxation ...
How to Validate Your Transonic CFD with the Onera M6
Просмотров 1,2 тыс.2 года назад
Transonic CFD capabilities are examined through the classic Onera M6 validation case. The meshing software was Pointwise and the CFD solver was Fun3d; the case ran on 40 cores of an HPC. Air properties and conversions: aerotoolbox.com/ grid spacing (y :) www.cadence.com/en_US/home/tools/system-analysis/computational-fluid-dynamics/y-plus.html
What cells should I use in CFD? | Tetrahedral vs Mixed cells
Просмотров 1,4 тыс.2 года назад
What cells should I use in CFD? | Tetrahedral vs Mixed cells computational fluid dynamics,openfoam,cfd,fun3d,tetrahedral,hexahedral,hexahedral mesh,tetrahedron,prism,wedge,polyhedron,tri,quad,volume mesh,inflation layers,prism layers,converge,convergence,computational fluid dynamics applications,runtime,efficiency,accuracy,pointwise,trex mesh,cfd mesh,cell types,geometry,lift and drag,discretiz...
4K Nebula Background | NASA Image Gallery
Просмотров 2492 года назад
4K Nebula Background | NASA Image Gallery images are courtesy of NASA image gallery, find more images at: images.nasa.gov/ ambient, background, nebula, nasa, jwst, relaxing, images, space, 4k, no ads, high resolution,
Control MSFS 2020 with Python: 6Dof Aircraft model | Pt. 1
Просмотров 3,9 тыс.2 года назад
In this video I will show how to Control Microsoft Flight Sim 2020 (MSFS 2020) with Python. The basic idea is that we need to figure out how to communicate between python and msfs 2020. To do this we install the SimConnect package and use functions to send and receive data, more details in video. This can have many possible uses, for us it will serve for visualization of the aircraft dynamics m...
Parallel reconstruction in OpenFOAM | Speed-up CFD postprocessing
Просмотров 3,9 тыс.2 года назад
In this video I show you how to use a script that implements reconstructPar in parallel to speed up your cfd/openfoam workflow. commands used: chmod x parReconstructPar.sh ./parReconstructPar.sh -n 6 GitHub with files: github.com/Interfluo/OpenFOAM-Cases-Interfluo/tree/main/reconstructPar_parallel Object Oriented System Analysis and Design: www.ioenotes.edu.np/media/notes/microprocessor/Chapter...
Pulsing Inlet Velocity in OpenFOAM
Просмотров 6 тыс.2 года назад
In this video I am going to show you how to implement a pulsing velocity inlet boundary condition in OpenFOAM (play simple animation) I will also provide the files to the my previous jet case which I have modified to a pulsing jet case (play jet animation) I will show you the basic implementation and tell you a little about what each line of the file is doing. (fade in file image) So we will be...
How to Define a BlockMesh | A Quick Reference
Просмотров 1,8 тыс.3 года назад
This video is a piece of my previous video "Coflowing-rectangular Jet, Adaptive Mesh Refinement (AMR) | Canonical Flows 3 (OpenFOAM)" where I cover how I set up the mesh using blockMesh for that case. I have uploaded this as a separate video to work as a quick reference when setting up a blockMesh file. The cases and video presented are for educational purposes and should serve as a launching p...
Coflowing-rectangular Jet, Adaptive Mesh Refinement (AMR) | Canonical Flows 3 (OpenFOAM)
Просмотров 3,7 тыс.3 года назад
In this video a rectangular, coflowing jet was studied. The effects of the initial mesh resolution and adaptive mesh refinement where studied. In the table shown you can see the cases that where investigated, 4 without and 3 with AMR. OpenFOAM case parameters mesh: blockMesh solver: pimpleFoam turbulence model: KOmegaSST Adaptive Mesh Refinement (AMR) is the process of dynamically adapting the ...
Turbulent Mixing Layer, AMR | Canonical Flows 2 (OpenFOAM)
Просмотров 2,4 тыс.3 года назад
"A mixing layer develops between two parallel, but different velocity, streams separated by a splitter plate upstream. The mixing layer is a flow of paramount importance for understanding the development of turbulence in external aerodynamics or combustion, as well as in atmospheric or oceanic flows" - Mixing Layer Vortices by Marcel R. Lesieur OpenFOAM case parameters mesh: blockMesh solver: p...
Boundary layer, inflation layers, meshing | Canonical Flows 1 (OpenFOAM)
Просмотров 3,7 тыс.3 года назад
In this video I go over some boundary layer theory and why inflation layers are important. This is done by setting up a boundary layer case in openfoam where the mesh is the inflation layers above a flat plate. This case has been set-up to explore the boundary layer “canonical flow”. I show you how to compute inflation layer parameters (number of cells, growth ratio, first cell height) from ini...
OpenFOAM CFD : 2D Rectangular Cylinder, blockMesh, KOmegaSST, pimpleFoam, von Karman vortex
Просмотров 2,6 тыс.3 года назад
This video shows the results for a simulation I ran on a 2d rectangular cylinder. The mesh was specified using blockMesh, the solver is pimpleFoam, the turbulence model is a komegasst, inlet velocity of 1 m/s, 1x1 m cylinder, and 2 cases (Re = 5e5 & 5e7). Along with velocity and pressure animations (surfaceLIC) the following plots are presented: 1.) Drag vs Time: Case 1 2.) Lift vs Time: Case 1...
Q Criterion & Surface LIC: ParaView mini tutorial
Просмотров 8 тыс.3 года назад
please note that you must have the surfaceLIC plug-in, for more details read: www.paraview.org/Wiki/ParaView/Plugin_HowTo Quick tutorial demonstrating how to calculate the Q criterion and create a surface LIC plot in ParaView. Along with the Q criterion I compute gradients, divergence, and vorticity. In short, "the Q criterion defines vortices as areas where the vorticity magnitude is greater t...
Topology Optimization 1 | SOLIDWORKS simple bracket
Просмотров 2,8 тыс.3 года назад
Topology Optimization 1 | SOLIDWORKS simple bracket
Vortex Lift 2 | OpenFOAM + Experimental and Theoretical Validation
Просмотров 5 тыс.3 года назад
Vortex Lift 2 | OpenFOAM Experimental and Theoretical Validation
Vortex Lift 1 | What do Supersonic Jets and Paper Airplanes have in Common?
Просмотров 11 тыс.3 года назад
Vortex Lift 1 | What do Supersonic Jets and Paper Airplanes have in Common?
naca9412 @ 45 deg alpha, Von Karman vortex street behind stalled airfoil | OpenFOAM
Просмотров 9113 года назад
naca9412 @ 45 deg alpha, Von Karman vortex street behind stalled airfoil | OpenFOAM
ParaView Scripting: how to quickly create a python macro to speed up post processing
Просмотров 4,7 тыс.3 года назад
ParaView Scripting: how to quickly create a python macro to speed up post processing
OpenFOAM Mesh Refinement Study: airfoil, simpleFoam, Cl, and Cd
Просмотров 3,4 тыс.3 года назад
OpenFOAM Mesh Refinement Study: airfoil, simpleFoam, Cl, and Cd
OpenFOAM 3D Wing Tutorial: pimpleFoam, AMI, and Advanced Post-Processing
Просмотров 13 тыс.3 года назад
OpenFOAM 3D Wing Tutorial: pimpleFoam, AMI, and Advanced Post-Processing
Tesla Valve OpenFOAM: Large Eddy Simulation
Просмотров 5 тыс.3 года назад
Tesla Valve OpenFOAM: Large Eddy Simulation
OpenFOAM Dam Break Simulation Results: Multiphase, InterIsoFoam, Dynamic Mesh
Просмотров 2,6 тыс.3 года назад
OpenFOAM Dam Break Simulation Results: Multiphase, InterIsoFoam, Dynamic Mesh
OpenFOAM cfMesh tutorial: cartesian mesh + refinement zones + inflation layers
Просмотров 9 тыс.3 года назад
OpenFOAM cfMesh tutorial: cartesian mesh refinement zones inflation layers
OpenFOAM Adaptive Mesh Tutorial: Modifying the Dam Break case for AMR
Просмотров 7 тыс.3 года назад
OpenFOAM Adaptive Mesh Tutorial: Modifying the Dam Break case for AMR
Adaptive Mesh Refinement Working Session 1: Node Coordinates and Connectivity (OpenFOAM)
Просмотров 1,2 тыс.3 года назад
Adaptive Mesh Refinement Working Session 1: Node Coordinates and Connectivity (OpenFOAM)
Cybertruck Aerodynamic Analysis | OpenFOAM 5
Просмотров 12 тыс.3 года назад
Cybertruck Aerodynamic Analysis | OpenFOAM 5
How to run OpenFOAM in Parallel | OpenFOAM tutorial 4
Просмотров 6 тыс.3 года назад
How to run OpenFOAM in Parallel | OpenFOAM tutorial 4
Nice video, which filter is applied on paraview for that cool postProcessing? Is it a clip by scalar or something like that?
You just sound like "Decino"
Super Nice, thanks for sharing. Can you tell me which visualization technique you use for the animation at 0:28 ? Thank you very much.
I know it’s too late to ask but does topology matter in product animation , I mean the cad models here are not having correct polygons…I mean during render time does they pose an issue ? & thanks for you tutorial brother…
帅
It's no openFoam tutorial if i need ansys for the mesh...
One the Best tutorial among all the videos on openfoam , appreciated the work!
The solution is to use Solidworks and Solidworks Visualize. Anything else in the polygon world is a waste of time.
Great thank you i need more!
New subscriber here. Can we discuss a new test of the valve in open foam but with the valve installed in the pulse detonation chamber it was designed for that has a pulsed pressure higher that atmospheric? I’ve never seen the simulation being ran in the proper format for use of the invention. It will yield very different results!
thanks for the tutorial, can you tell me which folders "0, constants, system" you used?
Does the use of designmodeler add anything or is it just geometry creation. Us non commercial users are stuck with open source software
So...tetrahedral mesh had 2.36x as many cells, 0.99x as many nodes, and 1.62x as many edges...as mixed mesh. That's a big deal if run duration was only 0.73x! Why isn't this common knowledge already? Good work! Did you run exactly 10,000 iterations for each case? It appears so from the charts, but it's hard to tell with a logarithmic domain and holes in the data. 2:11 On the right-hand chart, what the hell's going on with the y-axis? Did you round the values to the nearest tenth?
Can you provide a link to the following design shown in video?
Thanks for the video! There is one quick question, in ParaView GUI interface, the input parameter for gradient filter is scalar array, but it seems that field U is an array of vector (vx,vy,vz), how could we compute the gradient for it? Thanks!
Thank you for the tutorial :) When i run your cybetruck simple foam project i get following error: --> foam fatal error: invalid wall function specification. Patch type for patch topX must be wall. Current patch type is patch. Do you know the cause of this ? Thank you so much for the reply
edit: i found issue. Wrong boundary conditions, all types were selected as "patch". After correcting them to patch type "wall" and leaving only inlet and outlet as "patch" now simulation is running fine.
Is there a reason for the way you apply mesh density?
also great choice of music lol
What a gem of a video - so interesting ❤
I tried to reproduce the animation from the Github source code and couldnt't. The solvers complete but I can't get the volumetric rendering of the air velocity just like in the video. Do you have an additional paraview plugin setup?
CL/CD of less than 4 is very weird at this Reynolds number
I agree CL/CD of 4 is too low. This is clearly as a result of methods used. I have found similar results (~3.5)in OpenFOAM for a wing I have tested in reality and found to be about 20. Does anyone know why the value is so low?
So interesting thank you
thank you so much!!!
Hello, Autodesk Inventor is saving or exporting the assembly as a single .stl file with joined bodies. It is not giving separate stl file for each body for the assembly. What to do?
Ok I got the answer, for anyone wondering. In "Save As", click options and them export as multiple files.
If the file comes as one or you have multibody parts in one of the files that you want to animate separately, hit Tab in Blender to enter edit mode with the part selected, hit p key and "separate as loose parts". Be sure to set the origin point of each part, but sometimes (say on a piston arm) another point may be more relevant. If a part need multiple points of rotation, parent the part to an empty and animate the empty (both selected, then ctrl+p). Doing some Blender tutorials would be nice too. This guy don't seem to address some of the smoothing issues that may require some cleaning up of the imported geometry.
Thats really good man thanks a lot. This video had more information than most of the proffesional made videos about aerodynamics
Hi, I am Shashidhar, I want to create an animated video in the blender of an assembly. But I am facing a problem, when I put a camera and press zero my object is not visible. Can you please help me out
I love science. Just imagine how knowledgeable those scientists were... they've managed to put a paper plane in the water without dissolving it!
Some typos ...
Honestly. Just Talk like your normal self. Instead of poorly reading an overly done up script.
How do you get Solidworks? Pirate Bay is no more? What torrent server do you recommend?
What? How could Bender Not export Video files?
It can. If you do, you'll quickly learn why you shouldn't. Imagine a crash/blackout mid render that can take hours to days, or figuring out in the end the output settings were wrong. It's better to assemble the frames at the end, Blender can do this too.
Who is the Chill Background Music?
Very Informative video. Great job and Thanks for sharing
Hi gréât job, Can we use sketchup models, and how we van show thé animation indice unreal engine, if its possible, and van we use a big model as e parc of city with terrain (topographic as montzin)? Thank you
how do you create the files in 0, constant, and system folder?
As far as my understanding goes, the mesh you created in Ansys was a custom one. How did you get the 0, constant, and system files for the simulation to run? The rest of the video is very informative, so thanks.
did you find the solution to this?
@@user-fd1rq5to6w did you get it?
Why do you think it underpredicts drag by so much?
I need help.. // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create mesh for time = 0 PISO: Operating solver in PISO mode Reading field p --> FOAM Warning : From void Foam::polyBoundaryMesh::calcGroupIDs() const in file meshes/polyMesh/polyBoundaryMesh/polyBoundaryMesh.C at line 100 Removed group 'wall' which clashes with patch 2 of the same name. --> FOAM FATAL IO ERROR: (openfoam-2306) Cannot find patchField entry for wall file: 0/p.boundaryField at line 25 to 36. From void Foam::GeometricBoundaryField<Type, PatchField, GeoMesh>::readField(const Foam::DimensionedField<TypeR, GeoMesh>&, const Foam::dictionary&) [with Type = double; PatchField = Foam::fvPatchField; GeoMesh = Foam::volMesh] in file ./src/OpenFOAM/lnInclude/GeometricBoundaryField.C at line 177. FOAM exiting //*********************************************//
additional info: in paraview my boundary name is ************** Mesh Regions: group/wall internalMesh patch/inlet patch/outlet patch/wall ***************
HI im doing a science project in school . we want to study different type of wingtip on wing's effect ,so can i ask you that how did you made the wing model in openfoam please? do u have a video about it ?
Hi. at 11:10 How are you trimming the trailing edges without changing the shape of the adjacent sections? When I try to do it that way, the adjacent sections also get skewed
Hi, just to ask, so it’s unlikely to convert Fluent mesh (one-cell-thick block mesh) in open foam as axisymmetric mesh (pie shape) am I right? I’ve done research and came out w the utility makeAxialMesh but it seems not able to use in openfoam? Correct me if I’m wrong.
How would I go about testing how loud a whistle is? Say I was designing a whistle and I wanted to compare designs to see what is the loudest whistle within the range of human perception
Sir in my case the AMR didn't work?
There has to be something a little bit more user-friendly than this. This seems like trash. The fact that you have to go from the GUI to the command line prompt is redundant.
can you plese tell us how you set up the 0,constant and system folders?
Wow !
Wonderful guide!
Sir I have some questions regarding the AMR method?
Thank you! if you can help to show result (coefficients,..) will be better
great tutorial but music in the background is very annoying
when visualizing in paraview I am getting some triangulated cells. Is it due to paraview or am I doing something wrong in my dynamicMeshDict settings.