Micro-Jetting in Detonations- Origin and Dependence on Confinement, Chemistry, and Dimensionality
Abstract
Microscopic hypersonic fluid jetting (micro-jetting) has been recently shown to play a critical role in the cellular dynamics of detonation waves (1, 2). Nonetheless, the origin and dependence of micro-jet characteristics on detonation-relevant macroscopic properties (such as confinement, fuel type, etc.) remain unclear. Accordingly, the overall research objective of this proposal is to investigate the initiation and evolution of micro-jetting in different kinds of detonations (e.g., normal and oblique detonations), their interactions with the wall, and their dependence on chemistry, gas dynamics, and dimensionality. Specifically, we will investigate both (1) normal detonation waves (NDWs) in different channels, and (2) oblique detonation waves (ODWs) on wedge, cone, and double-cone configurations. Most importantly, we will identify key similarities and differences between NDWs and ODWs, especially in terms of the physics of micro-jetting.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2025
- Source ID
- FA95502410148
Entities
People
- Suo Yang
Organizations
- Air Force Office of Scientific Research
- Regents of the University of Minnesota
- United States Air Force