60 citations · 191 across the 10 of their papers we have counts for
10 papers
Responses to Disturbance of Supersonic Shear Layer: Input-Output Analysis
Mitesh Thakor, Yiyang Sun, Datta V. Gaitonde
We investigate the perturbation dynamics in a supersonic shear layer using a combination of large-eddy simulations (LES) and linear-operator-based input-output analysis. The flow c…
Unsteady control of supersonic turbulent cavity flow based on resolvent analysis
Qiong Liu, Yiyang Sun, Chi-An Yeh +3
We use resolvent analysis to determine an unsteady active control setup to attenuate pressure fluctuations in turbulent supersonic flow over a rectangular cavity with a length-to-d…
Resolvent analysis of compressible laminar and turbulent cavity flows
Yiyang Sun, Qiong Liu, Louis N. Cattafesta +2
The present work demonstrates the use of resolvent analysis to obtain physical insights for open-cavity flows. Resolvent analysis identifies the flow response to harmonic forcing,…
Feedback control for transition suppression in direct numerical simulations of channel flow
Yiyang Sun, Maziar S. Hemati
For channel flow at subcritical Reynolds numbers (), a laminar-to-turbulent transition can emerge due to a large transient amplification in the kinetic energy of small per…
Modal Analysis of Fluid Flows: Applications and Outlook
Kunihiko Taira, Maziar S. Hemati, Steven L. Brunton +5
We present applications of modal analysis techniques to study, model, and control canonical aerodynamic flows. To illustrate how modal analysis techniques can provide physical insi…
Active attenuation of a trailing vortex inspired by a parabolized stability analysis
Adam M. Edstrand, Yiyang Sun, Peter J. Schmid +2
Designing effective control for complex three-dimensional flow fields proves to be non-trivial. Oftentimes, intuitive control strategies lead to suboptimal control. To navigate the…
Spanwise effects on instabilities of compressible flow over a long rectangular cavity
Yiyang Sun, Kunihiko Taira, Louis N. Cattafesta +1
The stability properties of two- (2D) and three-dimensional (3D) compressible flows over a rectangular cavity with length-to-depth ratio of is analyzed at a free stream Mac…
Effects of sidewalls and leading-edge blowing on flows over long rectangular cavities
Yiyang Sun, Qiong Liu, Louis N. Cattafesta +2
The present work investigates sidewall effects on the characteristics of three-dimensional (3D) compressible flows over a rectangular cavity with aspect ratios of and $W/D=…
Biglobal instabilities of compressible open-cavity flows
Y. Sun, K. Taira, L. N. Cattafesta +1
The stability characteristics of compressible spanwise-periodic open-cavity flows are investigated with direct numerical simulation and biglobal stability analysis for rectangular…
3D Printing of Fluid Flow Structures
Kunihiko Taira, Yiyang Sun, Daniel Canuto
We discuss the use of 3D printing to physically visualize (materialize) fluid flow structures. Such 3D models can serve as a refreshing hands-on means to gain deeper physical insig…