FSI analysis in supersonic fluid flow

Aerodynamic control surfaces, i.e. fins, are normally high loaded light weight structures subjected to fluid flow. For minimum weight requirements the fin structure stiffness and the control actuator system stiffness effects must be included in the fin design. In high Mach number flow an interaction between the fluid and the structure is a priori unknown and aeroelastic instability effects may occur. For a 2D-fin profile the fluid–structure interaction will be considered for an increasing fluid velocity up to Ma 2.0 and for stationary flow conditions at Ma 2.0 using ADINA/ADINA-F.