September 29, 2020 at 9:01 pmBrayden YorkSubscriber
I am running a parametric analysis in fluent with fluent meshing. I am simulating flow through a wire screen, and varying things like the misalignment of the screens, spacing, count etc. I am only simulating a small section, so I am using periodic boundaries in the X and Z planes, with the flow in the Y direction. I know what value I would like to set for the periodic offset (0.0005334m), an this does not change throughout all design points. I therefore disable the the 'auto compute offset' option, and enter my values. However after saving, and looking back at my boundaries I see that auto compute is re-enabled. I chose to ignore this at first, but I have had simulations fail due to 'not being able to auto compute the offset'. Is there a way I can permanently disable this and force it to use my value?
Thanks for any help.September 30, 2020 at 4:21 amKeyur KanadeAnsys EmployeeThe periodic looks straight forward. There is no reason auto compute to fail in this case. nIt will fail only if mesh on two sides are not matching. For periodicity geometry and mesh should match on both sides. Please check the case which is failing, for geometry and mesh match. nAlso you may want to use TUI. Please explore TUI for defining periodicity and Solution - activities - create - execute commands. nRegards,nKeyurnGuidelines for Posting on Ansys Learning ForumnHow to access ANSYS help linksnnSeptember 30, 2020 at 1:47 pmBrayden YorkSubscriberThank you Keyur.nIs it possible to assign both periodic pairs in the TUI? Also, can you create non-conformal periodic interfaces in the TUI?nRegards,nBraydennOctober 1, 2020 at 2:44 amKeyur KanadeAnsys EmployeeI overlooked it. You are creating periodics in two direction. Then you will need to use non conformal periodic interfaces. Yes, it can be created using TUI. nNovember 11, 2020 at 8:01 pmBrayden YorkSubscriberHi Keyur,nI'd like to revisit this question, as I have not been able to generate the 2 periodic conditions with the TUI. I've also found that the auto compute error I've been getting is because it will auto compute the appropriate distance in one direction, but add a small error in another direction. For example, one periodic condition may generate perfectly in the z-direction, but the x-direction periodic condition will have the offset (0.0005334, 0, 1.266E-20) with 0.0005334 being all that is wanted in this case. The E-20 term is unwanted, and should be 0 as it is with all of the other cases, and way too small to be a result of any geometric parameters input. I'm not sure how to resolve this, as I'm not even sure when I can replicate it, it seems to happen randomly. I've made everything in the geometry and meshing persistent, so if perhaps there is a way to hard code the 0.0005334m offset into the setup, that may work. Any advice is appreciated.nRegards,nBraydennNovember 12, 2020 at 9:52 amViewing 5 reply threads
Ansys Innovation Space
- 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.Trending discussions
- Suppress Fluent to open with GUI while performing in journal file
- Heat transfer coefficient
- What are the differences between CFX and Fluent?
- Floating point exception in Fluent
- The solver failed with a non-zero exit code of : 2
- Getting graph and tabular data from result in workbench mechanical
- Difference between K-epsilon and K-omega Turbulence Model
- Time Step Size and Courant Number
- Mesh Interfaces in ANSYS FLUENT
- error in cfd post
Top Rated Tags
© 2022 Copyright ANSYS, Inc. All rights reserved.Ansys does not support the usage of unauthorized Ansys software. Please visit www.ansys.com to obtain an official distribution.