June 26, 2019 at 2:28 am1993sauravSubscriber
So, I was running an FSI on an aortic valve of the heart but I have this problem .after a certain time step, I get negative cell volume. i change the re-meshing parameters when that happens and it seems to work for one or two timesteps than it gives the same error.i have played around with solution stabilization and implicit update and lots of other stuff but it gives me this error.
June 26, 2019 at 10:51 amRobAnsys Employee
It often means that the motion is too fast for the current time step & cell size. Reduce the time step and also check how the remeshing is behaving in case you're getting small gaps.
June 27, 2019 at 4:49 pm1993sauravSubscriber
i have checked remeshing parameters and tried to manipulate it with the mesh metric info. it seems to fail anyways .yeah, reducing the time step might help but i dont know if i can change the time step in the middle of the simulation .i have significant solutions until this failed time step .
July 1, 2019 at 4:14 pmRobAnsys Employee
If you can stop & restart the solution you should be able to change the time step. Otherwise you may need to start again.
June 20, 2020 at 9:44 amFarhanMuhibSubscriber
Have anyone found the solution to this problem?
- You must be logged in to reply to this topic.
Boost Ansys Fluent Simulations with AWS
Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.
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.
- Suppress Fluent to open with GUI while performing in journal file
- Floating point exception in Fluent
- What are the differences between CFX and Fluent?
- Heat transfer coefficient
- Getting graph and tabular data from result in workbench mechanical
- The solver failed with a non-zero exit code of : 2
- Difference between K-epsilon and K-omega Turbulence Model
- Time Step Size and Courant Number
- Mesh Interfaces in ANSYS FLUENT
- error in cfd post
© 2023 Copyright ANSYS, Inc. All rights reserved.