Is there someone who can explain me how to use the couple in star cd???Is there a tutorial about this issue???Do you have a simple example??? Thanks a lot raffap

After you creat all the grids you schould 'creat couple' in 'Assemble grids'. Couple includes two interfaces. One is master layer and the other is slave layer. couple must be created for the post treatment. If the two interfaces will transplace each other in the process, u must creat couple after the movement if no bounday on it.

thanks Leon, I tried also informations on starcd user guide and on star tutorial (N°14).