5 papers
Navier-Stokes-driven analysis of mean and fluctuating wall shear stress in turbulent channel flow
Le Yin, Yongyun Hwang, John Christos Vassilicos
We propose a Navier-Stokes-driven analysis of the mean and fluctuating wall shear stress (WSS) applied to turbulent channel flow data from direct numerical simulations at friction…
Multiscale quasi time-periodic coherent structures in shear flows
Runjie Song, Kengo Deguchi, Genta Kawahara +1
Attempts to disentangle shear-flow turbulence often focus on identifying relatively simple solutions, such as travelling waves or periodic orbits. We show, however, that capturing…
Turbulent transport for wall shear stress fluctuations
Myoungkyu Lee, Yongyun Hwang
Statistical structure and the underlying energy budget of wall shear stress fluctuations are studied in both Poiseulle and Couette flows with emphasis on its streamwise component.…
State-dependent convergence of Galerkin-based reduced-order models for Couette flow
Zilin Zong, Igor Maia, André Cavalieri +1
In this study, we explore the effect of basis functions on the performance and convergence of the Galerkin projection-based reduced-order model (ROM) in the minimal flow unit of Co…
The origin of wall-shear stress fluctuations in wall-bounded turbulence
Myoungkyu Lee, Yongyun Hwang
The origin of wall shear-stress fluctuations in wall turbulence was studied through energy dissipation at the wall. While confirming the universality in wall dissipation at small i…