Fluid–Thermal–Structural Interactions on a Supersonic Two-Dimensional Intake

Abstract

This study aims to enhance the verification database for fluid–thermal–structural interaction (FTSI) experiments and develop a comprehensive methodology for parameter measurement in such tests. A complex S-shaped wedge model was selected to perform a 40-s FTSI experiment, and the effects of varying Mach numbers (Ma∞) on FTSI were analyzed using a validated numerical code. The results confirm the feasibility of the experimental approach, demonstrating that the proposed method captures temporal variations in key parameters and verifies the accuracy of the custom-developed simulation code. The results show that although the S-shaped wedge experiences significant parameter changes during the initial phase of the test, these parameters stabilize at different times rather than concurrently. Furthermore, an increase in Mach number (Ma∞) intensifies FTSI effects, resulting in higher component temperatures, accelerated achievement of steady-state conditions, increased temperature gradients within components, greater structural deformation, and more pronounced variations in wall pressure distribution. It is suggested that increasing Ma∞ in future FTSI experiments will amplify observable phenomena, providing more pronounced insights into the interaction dynamics.