CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

simpleFoam porous media contact problem

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 18, 2023, 07:30
Default simpleFoam porous media contact problem
  #1
New Member
 
Mohamed Baraket
Join Date: Mar 2021
Posts: 6
Rep Power: 5
BarakeX is on a distinguished road
Hello,

I am trying to simulate flow through an air filter with simpleFoam.
It has a filter body with an inlet and an outlet, and a simple cylinder (with a cut cylinder inside) as a filter element, which I defined as a porous media through fvOptions.

The geometry was all meshed with snappyHexMesh, even the cellZone for the porous element is defined there.

Whenever I un the simulation with the porous zone in contact with the walls of the filter body, the solver gives unrealistic results and the velocity + pressure spikes (extremely high values) in random areas around the contact between the wall patch and the porous cell zone.

When I modify the filter element (porous) to have no contact with the walls, the simulation runs and gives reasonable results, but then the air goes over and inside the cylindrical hole of the filter element, which is not supposed to happen irl.

I saw a tutorial case folder where they used porousSimpleFoam, but it was kind of complicated for me to look into since I'm short on time, I saw that they defined another boundary that they called "porousWalls" which was in contact with the walls of the simulation domain, I couldn't find out how he defined it and it worked.

I have attached a picture of the geometry.

Any idea how to get around this problem?
BarakeX is offline   Reply With Quote

Reply

Tags
porous boundary, simplefoam

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Moving porous media problem Jerry190607 CFX 12 November 28, 2019 05:11
ANSYS FSI Problem - Gel Particle Transport Through Porous Media alijamali ANSYS 1 March 24, 2017 15:07
Pressure drag problem in porous media with interFoam skp OpenFOAM Running, Solving & CFD 8 May 27, 2015 08:10
Porous media solving problem mulfal OpenFOAM Running, Solving & CFD 2 June 23, 2010 05:31
species mass source in porous media ? PK FLUENT 0 February 16, 2007 11:12


All times are GMT -4. The time now is 21:01.