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Thaw Tar
Japan
Приєднався 23 вер 2012
How to create structured mesh in Salome
In this tutorial, you will learn how to create a structured mesh for a pipe flow in Salome.
Salome is a very powerful tool for CFD/CAE workflows and mastering Salome can be very useful for your CFD journey!
You can find my Ampersand OpenFOAM case generation software in github: github.com/thawtar/ampersandCFD
Deepen your CFD and OpenFOAM knowledge: cfdmonkey.com
Explore the realm of computing in CloudHPC: cloudhpc.cloud/registration-cfdmonkey/
0:00 Introduction
1:00 Creating pipe
5:00 Creating sketch for inside region
8:00 Using smash to create multi-region geometry
10:00 Thaw forgot to rotate the cylinder
12:20 Creating planes for slicing
14:00 Slicing the cylindrical domain
15:00 Creating the initial structured mesh
18:00 Creating groups of edges for mesh sizing
20:00 Changing mesh size
25:00 Changing various parameters of mesh
Salome is a very powerful tool for CFD/CAE workflows and mastering Salome can be very useful for your CFD journey!
You can find my Ampersand OpenFOAM case generation software in github: github.com/thawtar/ampersandCFD
Deepen your CFD and OpenFOAM knowledge: cfdmonkey.com
Explore the realm of computing in CloudHPC: cloudhpc.cloud/registration-cfdmonkey/
0:00 Introduction
1:00 Creating pipe
5:00 Creating sketch for inside region
8:00 Using smash to create multi-region geometry
10:00 Thaw forgot to rotate the cylinder
12:20 Creating planes for slicing
14:00 Slicing the cylindrical domain
15:00 Creating the initial structured mesh
18:00 Creating groups of edges for mesh sizing
20:00 Changing mesh size
25:00 Changing various parameters of mesh
Переглядів: 818
Відео
Simulation of internal flows with OpenFOAM and Ampersand
Переглядів 1 тис.2 місяці тому
Ampersand is a command line tool to automate creation of OpenFOAM case files. Ampersand can be used for external and internal incompressible flow problems. In this video, we demonstrate how to setup your OpenFOAM simulations for internal flow problems using Ampersand. You can find the software in github: github.com/thawtar/ampersandCFD Deepen your CFD and OpenFOAM knowledge: cfdmonkey.com Explo...
Salome geometry cleaning workflow for snappyHexMesh (internal flows)
Переглядів 6772 місяці тому
In this tutorial, you will learn how to clean geometry and create a water-tight fluid domain for internal flows. You will also learn how to create the surface mesh (triangulation) and export these surface meshes to STL files for snappyHexMesh meshing. You can find my Ampersand OpenFOAM case generation software in github: github.com/thawtar/ampersandCFD Deepen your CFD and OpenFOAM knowledge: cf...
Installation of Ampersand CFD automation tool
Переглядів 3512 місяці тому
Ampersand is a command line tool to automate creation of OpenFOAM case files. Ampersand can be used for external and internal incompressible flow problems. In this video, we demonstrate how to install and use Ampersand. This includes downloading Ampersand from GitHub, installing the required Python libraries and running the program. You can find the software in github: github.com/thawtar/ampers...
Introduction to Ampersand CFD automation tool
Переглядів 6152 місяці тому
Ampersand is a command line tool to automate creation of OpenFOAM case files. Ampersand can be used for external and internal incompressible flow problems. 00:00 Creating a new case 02:00 Adding the first STL file 04:00 Preparing for external aerodynamics 06:00 Checking created case details 10:00 Checking the generated mesh 13:00 Running the steady-state CFD simulation 17:00 Checking the qualit...
LES simulation of a wall mounted cube
Переглядів 2744 місяці тому
This case study demonstrates a LES simulation of flow over a wall-mounted cube, inspired by an example from Prof. Perić's renowned "Computational Methods for Fluid Dynamics" textbook. High-Quality Mesh Generation The simulation features a block-structured mesh created in Salome and later converted to OpenFOAM format. The mesh consists of 11 million hexahedral cells, ensuring detailed resolution...
Sloshing of a truck tank with and without baffles
Переглядів 3,9 тис.4 місяці тому
Simulation of a truck tank due to sudden brake actions. The effect of baffles is very clear in keeping the fluid stable without huge oscillations. This simulation was done in OpenFOAM-v2406 and interFoam solver was used. Acceleration and decelaration of the fluid is modeled by using tabulatedAcceleration model in fvOptions.
Vortex induced vibrations of a square cylinder
Переглядів 8595 місяців тому
This is a demonstration of dynamic mesh tutorial in our website: cfdmonkey.com/ In this detailed tutorial, we will explain how to setup dynamic mesh with mesh deformation in OpenFOAM. For this tutorial, we will focus on prescribed mesh motion. If you want to know the general overview of dynamic meshing in OpenFOAM, you can check our previous post here: cfdmonkey.com/dynamic-mesh-op... Deepen yo...
Dynamic mesh in OpenFOAM using prescribed mesh motion
Переглядів 7976 місяців тому
This is a demonstration of dynamic mesh tutorial in our website: cfdmonkey.com/ In this detailed tutorial, we will explain how to setup dynamic mesh with mesh deformation in OpenFOAM. For this tutorial, we will focus on prescribed mesh motion. If you want to know the general overview of dynamic meshing in OpenFOAM, you can check our previous post here: cfdmonkey.com/dynamic-mesh-openfoam-introd...
Dynamic mesh with mesh deformation and prescribed motion
Переглядів 2806 місяців тому
Dynamic meshing is one of the areas OpenFOAM is popular for but many people (including me) struggle with dynamic mesh techniques for various reasons. I am creating a series of dynamic meshing tutorials for beginners using very simple examples. This is one of the easiest example for dynamic mesh with mesh deformation and prescribed motion. You can modify this to adapt for your own problem involv...
2D vertical axis wind turbine rotation using OpenFOAM
Переглядів 4296 місяців тому
OpenFOAM AMI functionality is used to model the rotary motion of a 2D vertical axis wind turbine using sixDofRigidBodyMotion Deepen your CFD and OpenFOAM knowledge: cfdmonkey.com Explore the realm of computing in CloudHPC: lnkd.in/ggKReS3q
How to simulate semisubmersible offshore wind turbine platform in OpenFOAM (3: Boundary Conditions)
Переглядів 2,7 тис.Рік тому
In this educational video, you will learn how to simulate semisubmersible offshore wind turbine platforms using the open source computational fluid dynamics software, OpenFOAM. I used OC4-DeepCWind semisubmersible platform design by NREL. In this video, I explained how to set up the boundary conditions to be used by interFoam solver for solving multiphase Navier-Stokes equations using VoF model...
Simulation of the motion of an Offshore Wind Turbine Foundation under Waves in OpenFOAM
Переглядів 1,4 тис.Рік тому
This is the demo of my tutorial series "How to simulate semisubmersible offshore wind turbine platform in OpenFOAM" I will share the case files in my later tutorials through my github page. You can find me on social media www.linkedin.com/in/thaw-tar-... thawtar1990 You can read OpenFOAM tutorials for industrial applications in my blog. cfdmonkey.com/tutorials/
How to simulate semisubmersible offshore wind turbine platform in OpenFOAM (Part2: Meshing)
Переглядів 3,2 тис.Рік тому
In this educational video, you will learn how to simulate semisubmersible offshore wind turbine platforms using the open source computational fluid dynamics software, OpenFOAM. I used OC4-DeepCWind semisubmersible platform design by NREL. In this video, I explained how to create the computational mesh in SnappyHexMesh to be used in OpenFOAM. 0:00 Introduction 2:00 Rotating STL file to proper di...
How to simulate semisubmersible offshore wind turbine platform in OpenFOAM (Part1: Geometry)
Переглядів 2,9 тис.Рік тому
In this educational video, you will learn how to simulate semisubmersible offshore wind turbine platforms using the open source computational fluid dynamics software, OpenFOAM. I used OC4-DeepCWind semisubmersible platform design by NREL. In this video, I demonstrated how to create the geometry of the platform from drawings. 0:00 Introduction 0:30 Disclaimer 2:00 Overview 7:00 Geometry creation...
How to install Ubuntu 22.04 LTS and OpenFOAM-v2212 on Windows 10
Переглядів 2,9 тис.Рік тому
How to install Ubuntu 22.04 LTS and OpenFOAM-v2212 on Windows 10
Salome for Industrial CFD tutorial (Creating Mesh of a NACA Airfoil)
Переглядів 2,1 тис.Рік тому
Salome for Industrial CFD tutorial (Creating Mesh of a NACA Airfoil)
Salome for Industrial CFD tutorial (Preparing Geometry of a NACA Airfoil)
Переглядів 1,5 тис.Рік тому
Salome for Industrial CFD tutorial (Preparing Geometry of a NACA Airfoil)
Vortex Induced Vibrations (VIV) in OpenFOAM (Follow Up: Turbulence Modeling Practices)
Переглядів 449Рік тому
Vortex Induced Vibrations (VIV) in OpenFOAM (Follow Up: Turbulence Modeling Practices)
Salome for Industrial CFD Series (Part 3: OpenFOAM Case Creation)
Переглядів 1,2 тис.Рік тому
Salome for Industrial CFD Series (Part 3: OpenFOAM Case Creation)
Salome for Industrial CFD Series (Part 2: Meshing of a Mixing Elbow)
Переглядів 2,3 тис.Рік тому
Salome for Industrial CFD Series (Part 2: Meshing of a Mixing Elbow)
Vortex Induced Vibrations (VIV) in OpenFOAM (Final Part: Analyzing Data for Publications)
Переглядів 1,3 тис.Рік тому
Vortex Induced Vibrations (VIV) in OpenFOAM (Final Part: Analyzing Data for Publications)
Salome for Industrial CFD Series (Part 1: Creating Geometry of a Mixing Elbow)
Переглядів 1,7 тис.Рік тому
Salome for Industrial CFD Series (Part 1: Creating Geometry of a Mixing Elbow)
Vortex Induced Vibrations (VIV) in OpenFOAM (Part 7: How to Use SixDofRigidBodyMotion)
Переглядів 1,4 тис.Рік тому
Vortex Induced Vibrations (VIV) in OpenFOAM (Part 7: How to Use SixDofRigidBodyMotion)
Vortex Induced Vibrations (VIV) in OpenFOAM (Part 6: Visualization in Paraview)
Переглядів 1,1 тис.Рік тому
Vortex Induced Vibrations (VIV) in OpenFOAM (Part 6: Visualization in Paraview)
Probably the Only YouTube Video You May Need For Learning OpenFOAM (Resources for Beginners)
Переглядів 1,3 тис.Рік тому
Probably the Only UA-cam Video You May Need For Learning OpenFOAM (Resources for Beginners)
Vortex Induced Vibrations (VIV) in OpenFOAM (Part 5: Running the Simulation!)
Переглядів 633Рік тому
Vortex Induced Vibrations (VIV) in OpenFOAM (Part 5: Running the Simulation!)
Vortex Induced Vibrations (VIV) in OpenFOAM (Part 4: Boundary Conditions)
Переглядів 722Рік тому
Vortex Induced Vibrations (VIV) in OpenFOAM (Part 4: Boundary Conditions)
Vortex Induced Vibrations (VIV) in OpenFOAM (Part 3.5: Extracting and Refining Feature Edges)
Переглядів 458Рік тому
Vortex Induced Vibrations (VIV) in OpenFOAM (Part 3.5: Extracting and Refining Feature Edges)
VIV works with winds from any direction?
Is it possible to download the case files?
Sir, case files are not found on the GitHub. I request you please upload.
Pretty nice video, thank you a lot 🫡 Waiting for the next one.
Is it Salome some sort of resembling on icem cfd?
I think Salome is more like Ansys workbench (DesignModeler/SpaceClaim+Ansys Meshing). It has geometry modules for creating and cleaning CAD and has meshing module which focuses on tetrahedral meshing but also capable of simple hex meshing.
Thanks for sharing
@@manuelffonseca You are welcome!
Very good work Please keep working on snappyHexMesh tool. It is really helpful but sometimes it generates awful mesh.
Please could you do a video how to use Salome because I have a my geometry in freecad I import it into stl and step file but I am struggling to put the inlet and outlet
I already made one. Please check it out. ua-cam.com/video/qKnXBSamBy8/v-deo.html
thanks a lot. Your video is quite helpful.
@@parkbugae4498 You are welcome! I am glad that it's helpful for you.
Thank you soo much for your videos.. it is very helpful
Thank you so much for your interest in Ampersand. I also removed the bug you reported.
Hi thaw, Recently I am working on flow pass over cylinder and I am facing a small problem and that is when I ran my blockMeshDict file the error is showing that "inward pointing faces" and rest all things are correct can help to solve this problem. If you want to see my blockMeshDict file then can send you
If you want then I can share my blockMeshDict file?
@@KavyaPatel-mn7zl I am sorry but I cannot help you much with your problem due to my tight schedules developing Ampersand code. But here is probably one of the easiest tutorials for your problem. ua-cam.com/video/Udt3RhkbgKw/v-deo.html Another approach is to use Salome to generate your mesh. I dumped blockMesh for complex shapes for Salome for several months. Salome gives you the same control as blockMesh but you can use more complex geometries and you can see your blocks real time.
Okay no problem I will go through this video and thank you for sharing content on LinkedIn ❤
can you share the link of paper u used for this tutorial.
Summary, the smaller waves of the bottom one have less kinetic energy and can cancel eachother out, meanwhile the big top one can't and has a bigger kinetic energy...
This is gonna blow up, I feel it.
The effectiveness is baffling
I am considering learning OpenFOAM from scratch but do not know C++. Which one would be the best resource for learning OpenFOAM?
It is OK if you want to learn OpenFOAM even if you do not currently have C++ knowledge. If you intend to use OpenFOAM like a commercial CFD software rather than modify the code, you can just directly use it. For the resources, I recommend WolfDynamics OpenFOAM introductory course. The lecture slides and case files are totally free. If you want to watch their lectures on UA-cam, you can subscribe their channel for 1$/ month which is extremely reasonable compared to other courses.
@@thawtar682 Thank you for your reply🙏🏼
@@thawtar682 Thank you 🙏🏼
Nice results with a fairly limited mesh size! Also love how you let the mesh move along with the square.
hi, do you have any videos or explanation about how to generate the RAO in this case?
Hi, can you please create the video tutorial for this simulation? Perhaps with 2D approach, boundary layer generated using snappyHexMesh?
how to calculate drag of this square block normal to each faces?
Is that flow induced rotations? Great mesh by the way.
@@amirkhan7416 Yes. This is flow induced rotation.
Hello Thaw, i tried to couple the two body as you described, while installing i am getting error related to VTK when i run the command ./Allwmake but such thing did not happen to your installation. Can you explain why such thing is happening and how can i fix it
What is the 3D modelling software that u used? I think u said it, but the audio quality is quite bad. Is the software free?
I used Salome for creating the 3D model. I am sorry that the audio was bad. Sorry for your bad experience
well structured and well explained..
thank you very much for the video, i have done all the steps accordingly but at the end when i type paraview i got this error: qt.qpa.xcb: could not connect to display qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. Aborted can you tell what to do now ?
In Windows, you may not be able to use Paraview from terminal. You can just type paraFoam -touch and a Paraview compatible file will be created. You can open this in Paraview to visualize the OpenFOAM results
Hi Thaw Tar, I'm wondering how you extract water surface elevations and pressures from your interFoam simulations? I believe you must be using some functions within the controlDict files - Could you let me know how you would go about this please? Thank you once again!
Great video. You do a great job teaching how to run Salome. The visibility of the dialog boxes is low. The font size looks very low.
Thank you for your feedback! I don't know what to do about the resolution actually. I have 2K monitor and the recorder records all the screen. That's why the fonts are small
Hi there, a very basic question in the creating STL file section: could you please let me know why you are creating the mesh in 22:57? Why not export Fuse_2_1 directly as a STL file? apologies for the possibly stupid question. And thank you for the useful videos that you've put up on your channel!
It's not a stupid question. It's a very good question leading to a very important thing you need to be careful about. When you directly export the fused solid as an STL, the triangles are very coarse which is not very good for snappyHexMesh. That's why I generated mesh to create a fine STL.
@@thawtar682 Thank you for the prompt response. I think I understand your point well now. And please continue with the good work that you are doing! 🙂
@@vivekfrancis139 It's my pleasure to explain this very important detail. For more insights to OpenFOAM, I have launched my blog cfdmonkey.com where I write about a lot of OpenFOAM related materials
@@thawtar682 Thank you♥
Bro there is no 0 folder in oc4
Sorry for the inconvenience! I moved the casefiles to our new website. cfdmonkey.com/tutorials/
Hello, Thaw, I would like to run my simulation with a nozzle now. I have imported the geometry in Salome and have created the mesh as you have done. I have also copied the structure and renamed the patches. Unfortunately OpenFOAM cannnot execute this simulation. How could I share you my files?
You can send me via Google drive. My email is support@cfdmonkey.com. We will reply within 24 hours whether we received your files or not. And which OpenFOAM are you using?
@@thawtar682 Hello, Thaw, I use OpenFOAM v2312 under Ubuntu. Meanwhile the simulation were done, but it seems to me, that it is not absolutley correct. I will contact you per email.
Hello, how do you change patches into walls after exporting? I can't apply some of the boundary conditions to patches as they need to be wall.@@thawtar682
You can find the case files here. cfdmonkey.com/tutorials/
that is a very nice tutorial. I hope you share about the wave setting for this simulation too
You can find the case files here cfdmonkey.com/tutorials/
Awesome video. You're a hero
I am glad it helped! And good luck with your OpenFOAM journey. If you are interested in more valuable tutorials and information, please visit my website cfdmonkey.com
can you please share your email id?
thanks for sharing
Nice to see that i dont neccessarily need freecad 🙂 thx
Yeah. I am tired of having to use FreeCAD because it is very strict with degree of freedoms.
Does anyone know how to couple moordyn to starccm？
Can you upload the PPt u use for it? please
Hello, if the combination is successful, but the test prompts that the moorDyn has been built without VTK support, and the calculation example cannot run, is there a solution
Hey, i encountered a similar problem, have you resolved this issue?
I made a successful compile and when I test the tutorial I faced this error. I am using OpenFOAM v2306. Error "MoorDyn has been built without VTK support"
I'm having similar problem, have you manage to solve an error?
I'm having similar problem too, have you manage to solve an error?
I have solve the problem. Now there is a updated tutorial whose dynamicMeshDict is set as the MoorDynR2 restraint instead of the MooDynR1, so It happens that MoorDyn has been built without VTK support, we need to change the restraint into the MoorDynR1, but a additional step is to extract VTK files using its python code(post MoorDyn_VTK.py).
Thank you for very nice and clear tutorial!
You are welcome!
Can you help me out . When I am running pimpleFoma , I am getting this error --> FOAM FATAL ERROR: Number of points in mesh 176231 differs from number of points 18081 read from file "/home/aman/OpenFOAM/aman-9/run/pitzDaily2/constant/polyMesh/points" From function Foam::points0MotionSolver::points0MotionSolver(const Foam::polyMesh&, const Foam::dictionary&, const Foam::word&) in file motionSolvers/displacement/points0/points0MotionSolver.C at line 50.
Highly appreciate your videos. Could you please advise in case if i consider top and bottom boundaries not as walls, what kind of notation should i use for k, omega boundary conditions? is it "zeroGradient" or is it "slip". I've seen "slip" in a motorbike tutorial but not sure about it.
Hi, I hope you are doing well. I have a problem, could you help me? I cannot even compile the MoorDyn v1. The problem is: /usr/bin/ld: cannot find -lstdc++ collect2: error: ld returned 1 exit status make: *** [MoorDyn.so] Error 1 Do you any idea? I have not solved it yet. Thanks a lot!!
Sorry. I have not faced your problem. First, I need to replicate the problem
@@thawtar682 Thanks for your reply. I have solved the problem by removing "-static-libstdc++" in the compileSO/makefile Could I have one more question? now compiling MoorDyn v2 also faces some problems: #error This compiler appears to be too old to be supported by Eigen #error This file requires compiler and library support for the ISO C++ 2011 standard. This support is currently experimental, and must be enabled with the -std=c++11 or -std=gnu++11 compiler options. Have you encountered kind of error? what version of CMake you are using? now I am using CMake 3.12 Thanks!
Hi, I hope not to disturb. Can I contact you for a quick consultation?
Yes. Please feel free to contact me
Dam! This video really saves my life! Thank you so much!
Happy to be useful for your work!
Can you please upload the files for this Part 3. Thanks
hello, E45: 'readonly' option is set (add ! to override) helpme
Thank you...
Hi, great tutorial, it's very usefull. I'm new as user of OpenFOAM. Can you explain me the differences between the dynamicMeshDict and dynamicMeshDict.sixdof? I have notice that in the two dictionary you have put different number but i don't understand what does it mean the sixdof one.