Adaptive-time Stepping
 

I am simulating a transient fluidized bed using Eulerian model in ANSYS FLUENT. According to the FLUENT User's Guide, "Adaptive time stepping cannot be used with Euler-Euler multiphase models."

but I saw several articles in which adaptive-time stepping algorithm has been used.

Using Constant time step would increase the computational cost since I have to use time step in order of E-4; otherwise, backflow would be seen at pressure-outlet boundary.

I wonder if there is any way to use adaptive-time stepping in Eulerian modeling.

Did people in these papers use Fluent? Maybe Ansys just did not implement this in Fluent...

Yes..they did
do u have any experience in fluidized bed simulation?

Unfortunately not, sorry.

Did u find answer to ur question regarding adaptive time step for eulerian-eulerian multiphase models. I am also looking for the answer. I know its been five years, but still if u could help me with this