July 7, 2020 at 4:07 pmhabibulaqil97Subscriber
I am an intern studying and still a newbie about ANSYS simulations and I would like seek a kind assistance regarding my meshing process of my pipe system. Below are my pipe system consists of pipes, reducers, reducing tees and elbows:
Now I was asked by my supervisor to generate hexahedral meshes and inflation layers on my pipe system. So far I have tried using sweep (manual src/trg because I need to add inflation layers on sweepable bodies) and hexa dominant methods. However, I was unable to generate both hexahedral meshes and inflation layers due to multiple reasons:
- When I apply sweep method, all of my pipe bodies can be applied with sweep method which lead to hexahedral elements to be generated except the parts where they are connected with mixing tees. Below are (green) bodies which are sweepable:
- I tried applying inflation method on the parts where sweep method is viable but every time I try to generate inflation layers, the method is found to be invalid, therefore inflation layers cannot be created. Same issues occured when I try to inflate hex dominant meshed bodies.
I hope anyone can help me as soon as possible and if there are any inquiries about my problems, please do ask me.
July 8, 2020 at 12:50 amKarthik RAdministrator
Are your bodies sweepable? Please right click and ask Meshing to display sweepable bodies. If it does not display all of your geometry, you will not be able to generate a Hex mesh. To obtain a hex mesh, you will need to further decompose your geometry to get sweepable bodies.
Regarding inflation layers, could you please try using the Multizone approach (rather than Sweep) and try to apply the inflation settings?
Please let me know if this works for you.
July 8, 2020 at 1:04 amhabibulaqil97Subscriber
Thank you for replying. I have shown the bodies that are sweepable above which is colored in green, and the areas that are connected with mixing tee are apparently not sweepable.
I have tried using multizone on the areas that aren't colored in green but the error "multizone blocking decomposition failed". Is this means I need to further split these bodies in DM as well?
Let me know what you think.
July 8, 2020 at 9:13 amRobAnsys Employee
The T-junctions can be hexed but I'd not bother trying now, just use tet elements. Also, we may want a predominantly hex mesh but do not use the "hex-dominant" meshing method it's for Mechanical and the CFD solvers won't run on it.
My suggestion would be to inflate the faces of interest on the T-junction parts using one inflation setting (number of layers must be identical for all parts). Mesh of of the T-junction volumes then work through the rest of the domain volume by volume. You'll get a mix of tets and swept prisms which will solve the problem nicely. You may then need to review the mesh and redo some of it, but that's part of the learning process.
July 10, 2020 at 5:44 amKeyur KanadeAnsys Employee
- You must be logged in to reply to this topic.
Simulation World 2022
Check out more than 70 different sessions now available on demand. Get inspired as you hear from visionary companies, leading researchers and educators from around the globe on a variety of topics from life-saving improvements in healthcare, to bold new realities of space travel. Take a leap of certainty and check out a session today here.
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 resolve Mesh Failure
- check element type
- The mesh file exporter could not resolve cyclic dependencies in overlapping contact regions error
- Meshing Error
- Error in meshing
- Conformal vs Non-Conformal Mesh
- Ansys 19.0 – will not create mesh
- Dealing with inflation layers around sharp corners in Ansys workbench meshing
- execution error inside the mesher. The process suffered an unhandled exception or ran out of memory
© 2022 Copyright ANSYS, Inc. All rights reserved.