Taira Lab - Computational Fluid Dynamics

Our group studies a variety of fluid mechanics problems with research interests in the areas of computational fluid dynamics, flow control, network theory, and unsteady aerodynamics. Our studies leverage numerical simulations performed on high-performance computers.

Point of Contact: Kunihiko Taira
Mechanical Engineering, Florida A&M University/Florida State University
email: ktaira[at]fsu.edu, tel: +1-850-645-0140, office: AME 216, lab: AME 107, map: pdf
CV: [pdf], Google Scholar: [link]

Recent Projects:

Network-based modeling and control of unsteady wakes

Support: AFOSR

We utilize network-theoretic approaches to characterize, model, and control unsteady wakes. [Movie (Presentation)]

Collaborator: S. Brunton (U Wash)

Active control of separated flows

Support: AFOSR (YIP)

We investigate the effects of fundamental flow control inputs on suppressing stall for a canonical airfoil with LES.

Network-based characterization and control of turbulence

Support: ARO

We characterize vortical interactions in 2D and 3D turbulence for its modeling and control.

Collaborator: S. Brunton (U Wash)

Stability and resolvent analyses of separated flows

Support: ONR (YIP)

We examine the stability and input-output characteristics of post-stall flows to support the design of effective active flow control setup.

3D control of high-speed cavity flow

Support: AFOSR

Design of active flow control based on global stability and resolvent analyses for reduction of velocity and pressure fluctuations in high-speed open cavity flows.

Collaborators: L. Cattafesta (FSU), L. Ukeiley (UF)

Analysis of 3D flow separation

Support: AFOSR

We examine the tip and sweep effects on 3D separation physics around wings with DNS/LES, in collaboration with experimental and theoretical partners.

Collaborators: M. Amitay (RPI), V. Theofilis (U Liverpool)

Subsurface vortex characterization and control

Support: Ebara Corporation

This project characterizes and controls the dynamics of subsurface vortices.

Collaborators: B. An, M. Obuchi, M. Nohmi (Ebara)

Attenuation of wing tip vortex

Support: ONR

This project examines the use of instability based control of wing-tip vortex.

Collaborators: L. Cattafesta (FSU), P. Schmid (Imperial College)

Turbulent flow modification with thermoacoustics

Support: ARO

This project studies the possible use of thermoacoustic actuators to modify the characteristics of turbulent shear flows.

Compressible AMR-immersed boundary method

Support: ARO

We are developing a compressible (energy conservative) immersed boundary code with AMR capability for FSI problems.

Collaborator: W. Oates (FSU)

Low-Re compressible flows

This study is motivated by low-Re flight in Martian atmosphere where compressibility effects can play an important role.

Collaborator: K. Asai (Tohoku Univ)

Sponsors:

We are grateful for the support from AFOSR, AFRL, ARO, ONR, NSF, Ebara Corp, Honda R&D, Cummins, and FSU CRC.