Competing Instability Mechanisms in Hypersonic Boundry Layers
Abstract
Over the last three years of the PI’s YIP award, he has worked to improve hypersonic transition modeling through theoretical and numerical developments emphasizing the dynamics of multiple interacting modes. Of particular note has been the development of a wave packet formulation for the NPSE method, the recognition that vortex modes are capable of trapping acoustic energy, and most recently, a thermoacoustic interpretation of second-modes, which has also led to advances in our understanding of nose bluntness effects. This proposal outlines a series of research themes which build upon these results with the goal of advancing accurate physics-based transition prediction with one subtle but marked difference in approach: here the emphasis is shifted from multiple interacting modes, to the more fundamental approach of competing instability mechanisms.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2021
- Source ID
- FA95502010047
Entities
People
- Joseph Kuehl
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Delaware