July 21, 2020 at 1:12 pmpoelon22Subscriber
I need help for this request:
I have initialy air inside my domaine and when I insert mud liquide inside by my inlet, I want only air go throught outlet and keep th mud inside. th pressure must increase. I use for now porous media but I am not able to keep mud inside my domaine.
Please, someone can help me?
July 21, 2020 at 3:26 pmRobAnsys Employee
Porous media will only slow material, but even then only if that material has somewhere to build up. What are you trying to model?
July 21, 2020 at 3:37 pmpoelon22Subscriber
I try to simulate, for the moment, a filling domaine with mud, but this mud must stay inside the domaine. The air must go outside by the outlet with porous media, because like you write, this slowing air throught the outlet is important for the model. Eventually, I will filtrate this mud.
I try for the moment, a wall just before the porous domaine but with air flux and velocity throught this wall and the result seems acceptable. This wall keep the mud inside without restraint air.
July 21, 2020 at 7:25 pmKarthik RAdministrator
It seems like you would like to model the filtration process. In order to do this, you will need to also activate the Discrete Phase Modeling (along with the porous media). The idea would be to trap your mud particles based on certain set criteria - either size of the particle with respect to the pore size or if the velocity of the particle is smaller than a certain minimum threshold. As you trap these particles, you will need to block off certain parts of the porous media through a UDF. Based on this blockage, you will need to readjust the viscous resistance parameters. The blockage and permeability will have to interface with each other. This would be one way to get your problem working.
With respect to the UDF, I'd recommend that you use the Fluent Customization Manual as a starting point. And regarding the viscous resistance data, you will need to either get this information from experiments or from existing literature.
Several studies have been conducted in this area on Fluent and they are well documented in the literature. Please take a look at the papers and try to replicate their results. This will help you build and verify your model.
I hope this helps.
- 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.
- 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
© 2022 Copyright ANSYS, Inc. All rights reserved.