define porous zone in fluid domain
 

Hi All,

I need to define a porous zone ( part of zone )in the fluid domain. my fluid domain contains total lenght of 0.76m height in which the lenght from 0.1 m to 0.6m should be treated as porous zone. When I defined the porous zone in my domain , it considers the whole domain as porous zone. Could you help me how I can setup the porous zone in fluid domain in Fluent.
Thanks.