Hypersonix Lab

Research Field: Aerospace – Hypersonic Laminar to Turbulent Boundary Layer Stability and Transition

Current research focus is on understanding the physical mechanisms (linear and nonlinear) of laminar-turbulent transition physics for improved hypersonic vehicle design and control. The research is carried out computationally by utilizing Linear Stability Theory (LST) and Parabolized Stability Equations (PSE) numerical results which are correlated to experimental  and direct numerical simulation (DNS) of hypersonic flows.

 Entropy Contour Plot – Notre Dame 1 inch 7 degree half angle cone

Purdue Flared Cone – CFD basic state solution at Mach 6, generated using US3D [1,2]

Purdue Flared Cone: Nonlinear PSE results: Traditional Delta Function (Left) and Gaussian Wavepacket capturing spectral broadening (Right)

Purdue Flared Cone: LST results Negative alpha of eigenvalue vs disturbance frequency.

Linear PSE: N-factor disturbance magnitude vs streamwise x-location.

Lab Domain