Quick and dirty introduction to overset meshes in Ansys Fluent 2023
Ғылым және технология
😎 In this video tutorial, we briefly introduce overset meshes, quickly explore how to set overset meshes in Ansys Fluent and run a simple static case using overset meshes in Ansys Fluent 2023.
🤔Overset meshes (OM) are also known as overlapping grids, overset composite grids, composite overlapping meshes, chimera meshes, patches grids, composite grids, relaxed multi-block meshes.
Case files:
bit.ly/3tRNRVK
🫡 Old playlist. This was back in 2019 - Pre-pandemic times fellas!
• Overset meshes with Op...
🥳 Stay tuned as we are working on a new playlist using the latest version of OpenFOAM ESI and Ansys fluent.
Chapters:
00:00 Introduction
01:20 What are overset meshes?
03:30 Let's launch Ansys Fluent - Remember to launch it as an administrator
05:50 Let's load the meshes - Merging meshes
07:38 Assign overset boundary condition
08:40 Overset interface
10:24 Let's initialize the solution to compute the cell types
11:35 Overset options hidden in the TUI (text user interface)
12:22 Same chimera hole as in OpenFOAM
13:45 Let's set the rest of the case
16:30 Let's talk about grid priorities
17:53 Let's continue with the case setup - Numerical method and monitors
19:03 Patch initialization - Equivalent to setFields in OpenFOAM
21:09 Let's read a case ready to run
22:45 Almost ready to run - Time advancement options
24:20 And off we go - Running the simulation - Some comments about the cores/hybrid architecture
30:08 Let's take a look at the final results
34:05 Main takeaways - Final remarks
Useful links:
Ansys Student - Free Software Download
www.ansys.com/academic/studen...
OpenFOAM setup
• Quick and dirty introd...
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Пікірлер: 4
Thank you very much for this video! Is there any video for moving mesh with the overset method?
@wolfdynamics5703
3 ай бұрын
Well, if I am not mistaken there are a couple of videos were I address moving meshes, in fluent and openfoam. If they are not in the playlist, let me know.
Hey Folks! Thanks a million for these videos! I think your materials are fantastic.... I had tried to use openFOAM overset meshes a few years ago for a rotating turbine case. This is a large case, with potentially millions of cells. I managed to get the simulation to run correctly, but my experience was that the overset approach was much much slower than other dynamic mesh setups. This was especially true when using a large number of processors. In your experience, do you believe that the openFOAM overset mesh numerics will be as fast as say a solid body motion solver? I understand that the benefit of overset meshing is that the motion can be large and arbitrary, and may be more suitable for FSI work. Cheers! Jarlath
@wolfdynamics5703
5 ай бұрын
It does not matter what software you use, Overset meshes is always slower. You use overset meshes only when you need it. It is the ultimate frontier and it has a high computational cost.