Faraday instability of a three-layer fluid system in a Hele-Shaw cell: Transition from zigzag mode to B-interface instability mode

The transition from zigzag mode to B-interface instability mode is experimentally observed in a Hele-Shaw cell filled with three liquid layers. The interface coupling effect is considered to be the determinant factor triggering this Faraday instability. Considering the zero-order interface coupling effect, we identify that the mode transition can be promoted by increasing the wave number and thickness of the middle layer liquid. Furthermore, by including the impact of first-order interface coupling, it is evident that a decrease in vibration acceleration and an increase in viscosity can promote mode transition from the dispersion relation.