Decoding fluid-structural coupling during shock-boundary layer interactions acting on compliant surfaces
Abstract
A barrier limiting the design, performance, and reliability of high-speed flight systems is inadequate understanding of Shock-Boundary Layer Interactions (SBLI) acting on compliant structural components. Fluid Structure Interactions (FSI) involving SBLI are challenging to discern since: 1) FSI and SBLI are both inherently multi-scale and nonlinear, and 2) the dynamics of SBLI introduces additional potential fluidstructural coupling mechanisms. Recent high-speed FSI research has successfully implemented advanced experimental and computational capabilities to produce high quality datasets that enable probing of varied unit problems. However, the conclusions derived are narrowly specific to the conditions of observation. Thus, confidence in predicting changes in the system response to parametric variations remains low. This is rooted in a lack of deep understanding on how, when, and why strong coupling is activated between the dynamics of the SBLI and an adjacent responding surface; as well as what level of modeling fidelity is needed to sufficiently capture it. A joint analytic-computational-experimental campaign is proposed to yield a deep, fundamental understanding of fluid-structural coupling between SBLI and compliant surfaces - i.e., “how”, “when”, “why”, “what” - so as to: 1) revolutionize our understanding of the underlying dynamics; 2) more effectively leverage and generalize knowledge gained from detailed, but narrowly scoped high-fidelity simulations and experimental measurements, and 3) guide the development of effective reduced fidelity models for the problem.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 21, 2022
- Source ID
- FA95502110357XX0
Entities
People
- Jack J. McNamara
Organizations
- Air Force Office of Scientific Research
- Ohio State University
- United States Air Force