April 27, 2022 at 7:07 amchehadeSubscriber
When simulating the 6DOF rotation of a turbine i get 2 errors: one stating there is reverse flow at the pressure outlet and the other which is weird stating: unable to write motion history file.
i was told the 1st is not a problem for my simulation but the 2nd i do not understand. Are they related?April 27, 2022 at 7:57 amApril 27, 2022 at 10:46 amRobForum ModeratorReverse flow is a warning, not an error and just means you have some flow coming in through the outlet. Assuming the outlet is sufficiently far from the area of interest it's not a problem.
Why are you using 6DOF for a turbine? Reference frame or sliding mesh should be sufficient.
April 27, 2022 at 2:40 pmchehadeSubscriberthe objective of the project is to let the flow turn the turbine so i need to use 6DOF. So it does not block the solution from converging? Problem is that the simulation takes too long to finish and check for issues so its better to fix them at the start.
April 27, 2022 at 3:21 pmApril 28, 2022 at 1:46 pmRobForum ModeratorNo reason to not take the force on the blades and feed that into the moving reference frame speed via either a UDF or expression.
Reverse flow may not help convergence but shouldn't stop the model converging. However, given the domain size I'm not sure why you're getting it.
Viewing 5 reply threads
Ansys Innovation Space
- The topic ‘ANSYS SOLUTION ERROR’ is closed to new replies.
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.Trending discussions
- legend min and max
- Ensight hot iron palette from an image
- Streamlines in EnSight using MRI data
- Import MRI data into Ensight
- FLUENT APPLICATIION ERROR
- Total Surface Heat Flux Calculation in Fluent
- Drop Test of a Water-Filled Tube
- Difference between “total pressure” and “absolute pressure”?
- Minimum Orthogonal Quality Less than 0.01 For Transonic Airfoil Flow Analysis
- obtaining pressure distribution by making points in ansys
Top Rated Tags
© 2023 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.