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-   -   Adaptive-time Stepping (http://www.cfd-online.com/Forums/fluent/107896-adaptive-time-stepping.html)

Maryam.SUT October 9, 2012 03:02

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.

RodriguezFatz October 9, 2012 03:52

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

Maryam.SUT October 9, 2012 05:19

Quote:

Originally Posted by RodriguezFatz (Post 385649)
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?

RodriguezFatz October 9, 2012 05:20

Unfortunately not, sorry.


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