Research
Group research interests: fluid mechanics, unsteady aerodynamics, computational fluid dynamics, modal/non-modal analysis, and flow control.
Unsteady Flow Mechanisms in Compressible Aerodynamics
This research examines the fundamental physics driving complex unsteady aerodynamics high-speed flows, where shocks, shear-layer instabilities, and coherent structures strongly interact. Advanced analysis tools, such as data-driven decomposition and operator-driven methods, are used to extract dominant flow features and reveal the input–output pathways that govern instability and unsteadiness. Together with high-fidelity CFD simulations, these methods enable a deeper understanding of the mechanisms that shape and control high-speed aerodynamic behavior.
Physics-Based Modeling of Unsteady Disturbance Dynamics
This research area models disturbance dynamics in unsteady flows using the linearized Navier–Stokes equations to uncover the mechanisms that drive instability, amplification, and energy transfer. By examining how targeted perturbations interact with the underlying flow, the approach reveals the underlying physics in nonlinear flows and highlights the most influential pathways for effective flow control. A key methodological advance is the development of harmonic resolvent analysis for fully three-dimensional, unsteady, compressible flows, providing leading capability to characterize cross-frequency interactions in high-speed environments.
Physics-Driven Flow Control
This research thrust advances physics-informed flow control by integrating disturbance-level insights, high-fidelity simulations, and tightly coupled collaborative experiments to design strategies that are both innovative and practically impactful. By leveraging a deep understanding of how perturbations evolve, interact, and feed back on the underlying flow, we develop control concepts that target the key mechanisms driving unsteadiness, instability, and aerodynamic inefficiency. This integrated approach yields control schemes that are both effective in manipulating complex flows and scalable for real engineering systems, ultimately bridging fundamental physics with performance-driven design to deliver actionable solutions for aerospace, propulsion, and other fluid-based technologies.
Bio-Fluid Inspiration
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