problem in co2 injection simulation

[changchun_china]

hello everyone:

i am using TOUGHREACT code to simulate CO2 injection in a sand-shale system. Aftering setting the paraments required, i made a 90kg/s injection in the central cell, then run the simulation, it always halt prematurely. I do not know the question in it. I doubt if it is the boundary question, but i do not know how to set the boundary conditions.Can anyone tell me how to define boundary conditions in TOUGHREACT?

[Charlie Thornton]

You can make boundary conditions by editing some cells (e.g. all cells on the max-z face) and setting their Type to Fixed State.