[FelipeLima]

Hi guys,

Here is my simulation: I have a cylindrical tube of 66.5 cm of length and 3 cm of diameter. It's a buyoant, three-phase and porous domains which 2 fluids go through and there is already solid (catalyst) inside. One of the fluids is a liquid (diesel) dispersed phase with hydrogen diluted, the other phase is a gaseous (H2) continuous phase. It has a reactional model which i have to remove sulfur from the liquid and has formation of H2S. Oh, it's operating at 10 MPa pressure and temperature of 643.15 K.

My problem is when I specify the interface equilibrium model through Henry's Law for both H2 and H2S. So when I run the solver with these models active the solver crashes saying it found a error in subroutine PEEKI (I'm posting the error results file). Here is the message:

Details of error:-
----------------
Error detected by routine PEEKI
CDANAM = /FLOW/ALGORITHM/GLOBAL/SUBSYS/MASFRC_SS8 /MASFRC_MT4_FL2 /IDF_VAR_S
CRESLT = NONE

Current Directory : /FLOW/ASSEMBLE/TIME-0/EQUATIONS/MASFRC_MT5_FL1/IELG1

I know it's a typo but I couldn't find this error anywhere. So I will aprecciate a lot if someone give me any kind of direction.

Thanks. (sorry if I did any grammatical mistak, english is not my native language)

[cfdgremlin]

Felipe,

are the components in the component pair transported - i.e. specified with transport equations? I believe this is a restriction in the solver, even though CFX-Pre may offer pairs which contain those of type constraint and algebraic.

CG

[FelipeLima]

Gremlim,

Yes, most of them are transported through the fluids.

The specified list of materials in each phase is the following:

Gas Phase: H2 and H2S
Liquid Phase: Diesel with sulfur (aprox. 9% of the phase mass fraction), desulfured diesel, H2 (aprox 1.7% in mass fraction) and H2S.

With an observation, in the boundary conditions (initialization) I'm specifying a mass fraction of value equal to 0 for the H2S in both phases (since it's reaction product).

My set of components pair details:

Liquid: Desulfured Diesel as constraint, sulfured diesel, H2, H2S as transport equations (with kinematic diffusivities calculated through CEL expressions).

Gas: H2 as Constraint and H2S as transport with the same kinematic diffusion of the H2S present in liquid phase (same calculation).

Thanks for the response.

[cfdgremlin]

I think H2 needs to be a transport equation in both gas and liquid phases.

CG