July 24, 2018 at 12:33 amJimmyhanSubscriber
I am Jimmy,
I found in some papers that mesh density has been mentioned.
In order to compare with them, I would like to calculate mesh density
But I do not know how to realize this in CFX generator.
Can CFX do that, and how?
July 25, 2018 at 11:10 amRobAnsys Employee
The paper probably uses mesh density to show how refined the mesh is: ie how many cells are in/over a region. The reports in ANSYS Meshing will give quality etc, and you set the sizes when building the mesh.
Does the paper refer to a cell count or cell size anywhere?
July 26, 2018 at 12:11 amJimmyhanSubscriber
Thank you for your reply.
Yes, they mentioned the cell number in some regions. As you know, we have to refine the mesh or enhance the mesh quality in some regions, especially for boundary layer, But I don't know how to use CFX checking the cell number or other information about meshing details. CFX always gives out the total value. Can you give me some suggestion?
July 26, 2018 at 11:04 amRobAnsys Employee
I always check mesh characteristics in ANSYS Meshing, rather than the solver. You're looking for statistics or quality (depending on version) under the Mesh part of the ANSYS Meshing tree.
July 26, 2018 at 11:24 pmJimmyhanSubscriber
The version I used is 19.0, By by the way it does not have ICEM, right? I still did not understand the way, If you were me, how to calculate the cells in the connecting region of two solids parts.?
July 27, 2018 at 9:32 amRobAnsys Employee
In a mesh you use the settings to set what mesh you want. You can then check visually, or look at the quality metrics. I'd suggest going through some of the materials on ANSYS Meshing. ICEM CFD is an excellent tool, but potentially not necessary for what you're doing: you're trading power/functionality for usability.
July 28, 2018 at 1:49 amJimmyhanSubscriber
If I understand correctly, I still can't get a value about the mesh density. All I can do just control the mesh quality visually and set maximum value like 10^-6 unless I count one by one by myself, right? So people should show mesh figures in their papers directly.
July 30, 2018 at 10:58 amRobAnsys Employee
Pretty much. We set the cell sizes (along with growth rates and size function settings) which combine to give us a mesh. We can then look at the mesh resolution, cell quality, cell count etc. I suppose the density could be measured as number of cells in a given volume (you built the CAD so you know the volumes, or take it from the software).
Many papers are trying to show an application or technology. Some aspects of the work may not be well explained, and this could be by deliberate omission if they're trying to hide something or there's an assumption that the audience will know. Note, if you're taking data from a single paper look to see what else the authors have published. I've had papers published in Pharma journals where we had to explain the technology fully using very simple terms: publishing essentially the same work in a CFD magazine meant we could summarise the CFD part (the audience understand it) but had to really explain the results.
July 31, 2018 at 5:05 amJimmyhanSubscriber
Thank you for your reply. It is a great suggestion. And from your explanation, I can learn some tricks in CFD paper writing.
- You must be logged in to reply to this topic.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- ANSYS Workbench Measuring within Design
- how to improve the inflation quality at sharp corners?
- check element type
- The mesh file exporter could not resolve cyclic dependencies in overlapping contact regions error
- How to resolve Mesh Failure
- Meshing Error
- Error in meshing
- Conformal vs Non-Conformal Mesh
- execution error inside the mesher. The process suffered an unhandled exception or ran out of memory
- inflation created stairstep mesh at some location
© 2023 Copyright ANSYS, Inc. All rights reserved.