CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > CFX

Directional Loss Porous Media

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

LinkBack Thread Tools Display Modes
Old   December 2, 2013, 11:29
Default Directional Loss Porous Media
New Member
Join Date: Oct 2013
Posts: 3
Rep Power: 6
tehzap is on a distinguished road

I am trying to simulate a multitubular reactor which contains 30.000 single tubes through a porous media. Unfortunately I don't really get how to setup the directional loss model for an anisotropic media.
The flow enters the reactor from above. As it flows through single tubes it is only able to flow in one direction (x- and z directions represent the walls of the tubes).
As far as I understand the model I have to setup the streamwise loss using the permeability. For transverse loss I chose the streamwise coefficient multiplier to be 10, which means that the permeability in x- and z-direction is ten times higher than in y-direction, am I right?
Now there's my problem with the streamwise direction. What do I have to enter into the Cartesian components? When I leave x and z zero, the fluid just flows through the middle of the porous media without spreading into x- and z-direction, that's how I expect it to be. When I enter x/y/z = 1/1/1 instead the velocity seems to be identical in the whole porous media right from the beginning. So I can't really check whether this is the right solution.

Thanks in advance,
tehzap is offline   Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Porous media setup issues in Fluent Bernard Van FLUENT 29 January 26, 2017 05:09
How to model granular flow through porous media Axius FLUENT 2 August 7, 2014 10:34
Directional loss model - describing a porous plate evcelica CFX 4 August 5, 2013 11:11
momentum loss equation porous media pato CFX 1 March 21, 2012 19:28
porous media: Fluent or Star-CD? Igor Main CFD Forum 0 December 5, 2002 16:16

All times are GMT -4. The time now is 13:11.