Fluid-Metamaterial-Interaction to Revolutionize Passive Control of Aerodynamic Flows
Abstract
This MURI program will establish the field of fluid-metamaterial interaction (FMI) that will discover new fluid-structure coupling between innovative materials and critical aerodynamic flows to enable passive control of transition delay, drag reduction, and separation. The program is driven by the underlying scientific question of how distinct classes of metamaterials interact with dynamics of dominant flow coherences in turbulent flows, and how are these interactions affected by porosity and surface texture. The objectives are (1) characterize FMI of wall-bounded flows when both the surface and subsurface have engineered dynamic and mechanical responses; (2) establish a foundational understanding of FMI through the lens of aligning interaction regimes between the solid and fluid; (3) quantify how the FMI scales with fluid and solid properties and identify meaningful dimensionless numbers that collapse FMI observations; (4) develop new computational engineering tools for FMI, including high-fidelity computational frameworks and reduced-order modeling paradigms; (5) manufacture metamaterials on realistic length scales for FMI, and develop comprehensive experimental methods to capture and understand the flow physics underlying FMI. To successfully establish this multi-disciplinary area of FMI, we assembled a team of 7 faculty over 4 universities, with expertise spanning all areas within FMI- multiple classes of mechanical metamaterials, architected materials, advanced manufacturing, computational mechanics, FMI simulations, experimental turbulent dynamics, experimental fluid dynamics, and turbulence modeling. Our approach centers around a synergistic collaboration between fluids and mechanics researchers to marry expertise in turbulent flow dynamics, FSI, and advances in materials science, mechanics, and manufacturing to enable an intelligent pairing of specific mechanical metamaterials with specific flows. This program will introduce new engineering tools, including high-fidelity computational frameworks, reduced-order model paradigms, coupled experimental methodologies, and manufacturing capabilities, to lay the scientific foundation for FMI in application-specific surface-subsurface structural systems in passive, dynamic flow control for the Air Force’s vehicle of tomorrow. The FMI discovered through this program are anticipated to produce transformative leaps in our scientific understanding of coupled fluid-structure dynamics. This will strongly impact the DoD, resulting in application-specific surface-subsurface structural systems that make passive, dynamic flow control a reality. The outcomes of this research program are expected to produce disruptive improvements to the energy requirements and flight envelope of air-vehicle operation, which is imperative to the future financial sustainability and continued superiority of the DoD energy ecosystem.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 29, 2024
- Source ID
- FA95502310299
Entities
People
- Kathryn H Matlack
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Illinois Urbana–Champaign