Instability and Receptivity of Complex Hypersonic Flows using Input/Output Analysis
Abstract
The proposed research investigates hypersonic boundary layer instability and receptivity for complex, fully three-dimensional geometries using Input/Output (I/O) analysis with a shock kinematic boundary condition (SKBC). Our approach directly incorporates of effects of multiple modes of instability as well as a model of shock/perturbation interaction to capture receptivity to freestream perturbations. We will apply I/O analysis to a series of Navy-relevant geometries involving blunt cones with highly swept fins and we will study the effects of different fin sweep angles and thicknesses. This will require some of the largest I/O analysis calculations to date. To accomplish this, we will leverage codes developed in a previous ONR-supported effort. I/O analysis based on the Hybridizable Discontinuous Galerkin (HDG) method using a preconditioned iterative linear solver has recently allowed our team to access order-of-magnitude larger problems than ever before, so we are well-positioned for success. We will also leverage data produced as part of a recent MURI on the effect of atmospheric disturbances on hypersonic flows, combining them with the results of the planned I/O analysis to understand the receptivity of a complex hypersonic boundary layer to realistic freestream disturbances.Approved for PublicRelease.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 15, 2023
- Source ID
- N000142312460
Entities
People
- Joseph Nichols
Organizations
- Office of Naval Research
- Regents of the University of Minnesota
- United States Navy