[daeyeobe]

Hi,

I am currently trying to simulate metal hydride reaction in Fluent.
The pressured hydrogen react with metal(porous zone) and I use UDF for mass and energy source term.
The reaction is: LaNi5 + 3H2 -> LaNi5H6.

I firstly tried with only porous zone and it worked.

Now, I am trying to change the geometry like attachment.
When I initialize it, the pressure of the gas zone is okay, but not for the porous zone (it shows zero) which should be 8 bar as I set initialization.
Other value looks fine tho, such as temperature, density, species...
Only pressure is issue, therefore, I could not see the reaction with this geometry.

For the geometry, I used Add-frozen and had two surface bodies.
I think the interface between the two zone is recognised as a wall.
So the gas is just remained in gas zone.

So my question is:

1. Should I separate two part for this problem? How can I make hydrogen go through interface?

2. If not, how can I assign two zone in one cell zone?