Fluid-thermal-structural coupling analysis on leading edge of hypersonic inlets

By analyzing the mechanism of hypersonic fluid-thermal-structural coupling problem, a multi-field coupling model was described mathematically and physically, and a loose coupling analysis strategy framework was developed. On the basis of this framework, a multi-field coupling analysis platform was realized by using adaptive coupling step-size, hybrid interpolation strategy, and mesh deformation method for complex configuration. A preliminary analysis was conducted on the coupling characteristics of the leading edge of hypersonic vehicle inlets. The calculated results reveal the temporal-spatial characteristics of the fluid-thermal-structural coupling problem in long-time aeroheating environments, and provide theoretical and technical support for the comprehensive performance evaluation and optimization of the thermal protection system of hypersonic vehicles.