Adaptive time step
 

Hi all friends.
Actually I newly get familiar with your forum and it is really awesome and I found right answer in case of any problems. Anyway, I am trying to modeling the heart by using the FSI (coupled FLUENT in Ansys workbench). My question is that how can I use the adaptive time step when I want to define the time step in the system coupling?
Thank you in advance for your possible answers.
Yours,
Siamak