porous medium
 

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?

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

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.

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

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

Porous Medium
 

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.