CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

porous medium

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 19, 2015, 04:14
Default porous medium
  #1
New Member
 
alimaseer
Join Date: Dec 2015
Posts: 7
Rep Power: 10
alimaseer is on a distinguished road
Hi ... im going to make a model which is a cavity filled with sand-silica as a porous medium ... the problem that stand to me is :
There is no sand-silica in database of materials that i use ..
Is there any one can help me plz?
alimaseer is offline   Reply With Quote

Old   December 20, 2015, 05:04
Default
  #2
New Member
 
Kirill Sitdikov
Join Date: Feb 2012
Posts: 8
Rep Power: 14
ksitdikov is on a distinguished road
ok, what u want? modeling flow via porous media? in this case u need experimental coefficient. read ansys help in 6.2.3 And other information u can find in book underground Hydromechanics or extraction of black oil
ksitdikov is offline   Reply With Quote

Old   December 20, 2015, 11:57
Post
  #3
Member
 
vlg
Join Date: Jul 2011
Location: My home :)
Posts: 81
Rep Power: 17
villager is on a distinguished road
Quote:
Originally Posted by alimaseer View Post
There is no sand-silica in database of materials that i use ..
Ok, look for SiO2 - it is silica, or quartz sand, in the default FLUENT database.

You can create your own materials easily as well (just use any material under Materials -> Create/Edit -> type Solid, after changes press Change/Create and answer No - this will save your material not overwriting the existing ones in the case-file). Get the reference book or use online tables with material properties: molecular weight, density, thermal conductivity, heat capacity, etc. for SiO2.
What properties you need depends on a study you do, but I listed the basic properties.

Last edited by villager; December 20, 2015 at 11:59. Reason: add-on
villager is offline   Reply With Quote

Old   December 20, 2015, 11:59
Default
  #4
New Member
 
alimaseer
Join Date: Dec 2015
Posts: 7
Rep Power: 10
alimaseer is on a distinguished road
thank you ...
it is a metallic cube ( 0.3 * 0.3 * 0.3 ) m ... filled with sand - silica saturated with water and heated from below by constant heat flux.. Walls will be change to be wavy wall to find out how does that acting on temperature distribution
alimaseer is offline   Reply With Quote

Old   December 20, 2015, 14:22
Default
  #5
New Member
 
alimaseer
Join Date: Dec 2015
Posts: 7
Rep Power: 10
alimaseer is on a distinguished road
thank you mr villager
1. i didn't find sio2 or quartz sand in default database
2. where can i add a material in this page
http://store1.up-00.com/2015-12/1450633990771.jpg
alimaseer is offline   Reply With Quote

Old   January 6, 2016, 15:57
Default Porous Medium
  #6
New Member
 
Ray
Join Date: Nov 2015
Posts: 17
Rep Power: 10
Rayman is on a distinguished road
Quote:
Originally Posted by ksitdikov View Post
ok, what u want? modeling flow via porous media? in this case u need experimental coefficient. read ansys help in 6.2.3 And other information u can find in book underground Hydromechanics or extraction of black oil
Dear Ksitdikov

Today is my first day here in this web site. I am also rather new to porous medium, did some tutorials and read text, but cannot figure out how I can do my task. Maybe you can help me?
I have a porous cylinder. The cylinder is filled with gas. Outside the cylinder is gas also and the pressure for both gas inside and outside the cylinder is same at 2180 psi. As time passes, the outside pressure is reduced from 2180 to atmospheric pressure with time e.g. 10 hours. I want to know how the pressure inside the porous cylinder changing? I know porosity, permeability, but do not know how to convert them to what fluent wants? Can you tell me what I should do? I appreciate your replies. You can also email me with rahman.ashena.313@gmail.com.
Rayman is offline   Reply With Quote

Reply

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
Turbulent flow in porous medium Chander CFX 4 January 17, 2017 10:50
Velocity inlet boundary condition for porous medium Chander CFX 3 March 11, 2012 22:18
Lack of local thermal equilibrium in porous medium Chander CFX 4 March 4, 2012 05:07
How to use non-equilibrium thermal model for porous medium in Ansys CFX 13.0? Chander CFX 3 November 28, 2011 15:26
porous medium and reactions Valeria FLUENT 1 July 10, 2009 04:58


All times are GMT -4. The time now is 22:18.