Receptivity and stability of hypersonic leading-edge sweep flows around a blunt body

This study performs global stability/receptivity analyses of hypersonic sweep flows around a blunt body with an infinite span. For the first time, we obtain characteristics leading attachment-line mode to variation angles from 20 70 degrees. The eigenfunctions exhibit instability at edge. At same cross-flow (at small angles) or second Mack larger dominates further downstream. We establish adjoint-based bi-orthogonal eigenfunction system address receptivity problem such any external forces and boundary perturbations. indicate that modes are most responsive surface perturbations applied in vicinity attachment line, regardless angles. It is also proved present extension can be successfully complex flows.