MODELING and SIMULATIONS ANALYSIS FOR THE BOUNDARY-LAYER TRANSITION (BLT) FOR THE BLUNT OGIVE EXPERIMENTS AT HHSTT
Abstract
Understanding the boundary-layer transition (BLT) process remains a critical and fundamental challenge to the designing hypersonic vehicles. Instantiation and development of BLT processes are impacted by dramatic heat transfer transition, boundary-layer separation, and aerodynamic control mechanisms in hypersonic flow regimes. Although much progress has been made in understanding the basic mechanisms of transition, vehicle designers usually predict transition using simple correlations. The uncertainties in these correlations can be large for new hypersonic vehicles, generating high levels of development risk and leading towards less effective but conservative designs. Furthermore, no single ground test can simulate all aspects of hypervelocity transition, and nearly all ground tests are corrupted by the high levels of test-section noise in conventional hypersonic wind tunnels. Mechanism-based prediction methods are needed for effective design of flight vehicles, and measurements of the mechanisms of transition are needed as part of a larger team effort to develop and validate these methods.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 07, 2023
- Source ID
- FA95502210141
Entities
People
- Vinod Kumar
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Texas at El Paso