Error ：Note: zone-surface: cannot create surface from sliding interface zone.
Professor, ,I am a novice. I am doing a simulation of balloon of antifreeze getting impact of crude tank.
I create four component :（tank， crude inside the tank，balloon inside the crude,and antifreeze inside the balloon）.
I used transient structure and fluid fluent and system coupling.
But the result is not good: when I see the result of transient structure ,I can see the inflating of balloon animate,no error.
But when I see the result of fluent fluid result ,the error happen ,when I want to create the contour map though the balloon
,it told me(Note: zone-surface: cannot create surface from sliding interface zone.Creating empty surface.)
when I create contour map that not though the balloon ,no error.
BY the way , selected the dynamic mesh(just select ,I choose no other options)
So I want to ask what happen to the result ,how to fix that.
thank you for your help.?