217 citations · 868 across the 46 of their papers we have counts for
5 papers · 1 filter
Targeted computation of nonlocal closure operators via an adjoint-based macroscopic forcing method
Jessie Liu, Florian Schäfer, Spencer H. Bryngelson +2
Reynolds-averaged Navier--Stokes (RANS) closure must be sensitive to the flow physics, including nonlocality and anisotropy of the effective eddy viscosity. Recent approaches used…
Comparing local energy cascade rates in isotropic turbulence using structure function and filtering formulations
H. Yao, M. Schnaubelt, A. Szalay +2
Two common definitions of the spatially local rate of kinetic energy cascade at some scale in turbulent flows are (i) the cubic velocity difference term appearing in the gen…
Optimal two-dimensional roughness for transition delay in high-speed boundary layer
Reza Jahanbakhshi, Tamer A. Zaki
The influence of surface roughness on transition to turbulence in a Mach 4.5 boundary layer is studied using direct numerical simulations. Transition is initiated by the nonlinearl…
Entropy and fluctuation relations in isotropic turbulence
H. Yao, T. A. Zaki, C. Meneveau
Based on a generalized local Kolmogorov-Hill equation expressing the evolution of kinetic energy integrated over spheres of size in the inertial range of fluid turbulence, w…
Forward and inverse energy cascade and fluctuation relation in fluid turbulence adhere to Kolmogorov's refined similarity hypothesis
H. Yao, P. K. Yeung, T. A. Zaki +1
We study fluctuations of the local energy cascade rate in turbulent flows at scales () in the inertial range. According to the Kolmogorov refined similarity hypothes…