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Search: Posts Made By: Msure
Forum: OpenFOAM Running, Solving & CFD January 13, 2021, 09:06
Replies: 27
Views: 1,789
Posted By Msure
Hello Atul, When I tested another case,...

Hello Atul,

When I tested another case, the results are still not very good. What I compared is the particle concentration in a ventilated room. I doubt I calculated the concentration wrong. ...
Forum: OpenFOAM Running, Solving & CFD January 8, 2021, 23:00
Replies: 27
Views: 1,789
Posted By Msure
Hello, I think you are right about the...

Hello,

I think you are right about the direction of gravity, then I tried all kinds of boundary conditions, meshes, and dispersion model. They didn't work. The results are the same as yours -...
Forum: OpenFOAM Running, Solving & CFD January 7, 2021, 11:55
Replies: 27
Views: 1,789
Posted By Msure
Hello, Yes. In that paper, it shows the...

Hello,


Yes. In that paper, it shows the setup is held vertically, but I think it is only due to the limit of the paper size so they draw the setup in the vertical direction. The paper didn't...
Forum: OpenFOAM Running, Solving & CFD January 7, 2021, 10:36
Replies: 27
Views: 1,789
Posted By Msure
Hi, Please see the attachment. I got it...

Hi,

Please see the attachment. I got it right. The particles fell down. In fact, it is just a small problem. The gravity is in y-direction which is -9.81, but you set it in x-direction. I read...
Forum: OpenFOAM Running, Solving & CFD January 6, 2021, 09:09
Replies: 27
Views: 1,789
Posted By Msure
Also, I can not generate the mesh correctly using...

Also, I can not generate the mesh correctly using your BlockMeshDict, it seems you lost a face in the boundary. I just see that your g=9.8 is in the x-direction. I didn't check it in detail, is it...
Forum: OpenFOAM Running, Solving & CFD January 6, 2021, 09:04
Replies: 27
Views: 1,789
Posted By Msure
And in another paper, the lagaragian method also...

And in another paper, the lagaragian method also lost some particle informtion in the lower part, and you can see the Euler method works better.
Forum: OpenFOAM Running, Solving & CFD January 6, 2021, 07:41
Replies: 27
Views: 1,789
Posted By Msure
Hello, I am doing it. I found your thread...

Hello,

I am doing it. I found your thread and some papers today. Because I also need to use the backward case as a validation of Openfoam's DEM method. I will show my results to you in recent days...
Forum: OpenFOAM Running, Solving & CFD January 6, 2021, 07:40
Replies: 27
Views: 1,789
Posted By Msure
Hello, I am doing it. I found your...

Hello,

I am doing it. I found your thread and some papers today. Because I also need to use the backward case as a validation of Openfoam's DEM method. I will show my results to you in recent...
Forum: OpenFOAM Running, Solving & CFD January 5, 2021, 12:35
Replies: 27
Views: 1,789
Posted By Msure
Hello, Have you tried to run it in 3D?...

Hello,

Have you tried to run it in 3D? Because sometimes the 2D condition will make the problem unphysical when I simulate some cases with OpenFOAM.
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