27 citations · 113 across the 16 of their papers we have counts for
17 papers
Vorticity dynamics in transcritical liquid jet breakup
Jordi Poblador-Ibanez, William Sirignano, Fazle Hussain
Contrary to common assumptions, a transcritical domain exists during the early times of liquid hydrocarbon fuel injection at supercritical pressure. A sharp two-phase interface is…
Strong Scaling of OpenACC enabled Nek5000 on several GPU based HPC systems
Jonathan Vincent, Jing Gong, Martin Karp +11
We present new results on the strong parallel scaling for the OpenACC-accelerated implementation of the high-order spectral element fluid dynamics solver Nek5000. The test case con…
Composite active drag control in turbulent channel flows
Jie Yao, Xi Chen, Fazle Hussain
A composite drag control (CDC) combining the opposition (OC) and spanwise opposed wall-jet forcing (SOJF) methods is studied in a turbulent channel flow via direct numerical simula…
Objective quantification of Particle Pair Diffusion in Homogeneous Isotropic Turbulence
Nadeem A. Malik, Fazle Hussain
Turbulence consists of interacting flow structures covering a wide range of length and time scales. A long-standing question looms over pair diffusion of particles in close proximi…
Separation scaling for viscous vortex reconnection
Jie Yao, Fazle Hussain
Reconnection plays a significant role in the dynamics of plasmas, polymers and macromolecules, as well as in numerous laminar and turbulent flow phenomena in both classical and qua…
Dynamics of fracturing saturated porous media and self-organization of rupture
C. Peruzzo, D. T. Cao, E. Milanese +4
Analytical solutions and a vast majority of numerical ones for fracture propagation in saturated porous media yield smooth behavior while experiments, field observations and a few…
Dynamics of a spatially developing liquid jet with slower coaxial gas flow
Arash Zandian, William A. Sirignano, Fazle Hussain
A three-dimensional round liquid jet within a low-speed coaxial gas flow is numerically simulated and explained via vortex dynamics ( method). The instabilities on the liquid-…
Length-scale cascade and spread rate of atomizing planar liquid jets
Arash Zandian, William A. Sirignano, Fazle Hussain
The primary breakup of a planar liquid jet is explored via direct numerical simulation (DNS) of the incompressible Navier-Stokes equation with level-set and volume-of-fluid interfa…
Generalized Fourier transform method for nonlinear anomalous diffusion equation
Jie Yao, Cameron L. Williams, Fazle Hussain +1
The solution of a nonlinear diffusion equation is numerically investigated using the generalized Fourier transform method. This equation includes fractal dimensions and power-law d…
Similarity transformation for equilibrium flows, including effects of blowing and suction
Xi Chen, Fazle Hussain
A similarity transformation for the mean velocity profiles is obtained in sink flow turbulent boundary layers (TBL), including effects of blowing and suction. It is based on symmet…
Predictions of canonical wall bounded turbulent flows via a modified equation
Xi Chen, Fazle Hussain, Zhen-Su She
A major challenge in computation of engineering flows is to derive and improve turbulence models built on turbulence physics. Here, we present a physics-based modified equati…
Bulk flow scaling for turbulent channel and pipe flows
Xi Chen, Fazle Hussain, Zhen-Su She
We report a theory deriving bulk flow scaling for canonical wall-bounded flows. The theory accounts for the symmetries of boundary geometry (flat plate channel versus circular pipe…
Prediction of temperature distribution in turbulent Rayleigh-Benard convection
Zhen-Su She, Xi Chen, Hong-Yue Zou +3
A quantitative theory is developed for the vertical mean temperature profile (MTP) in turbulent Rayleigh-Benard convection (RBC), which explains the recent experimental and numeric…
Logarithmic distribution of mean velocity and turbulent kinetic energy in a pipe flow
Xi Chen, Fazle Hussain, Zhen-Su She
A Lie-group based similarity theory is developed for both momentum and energy distributions in a turbulent pipe flow, leading to asymptotic logarithmic profiles of mean velocity an…
A multi-layer model for turbulent kinetic energy in pipe flows
Xi Chen, Fazle Hussain, Zhen-Su She
A multi-layer model of an energy length function is developed by employing recent results of the authors. The theory predicts the complete, mean streamwise turbulent kinetic-energy…
Karman constant and accurate mean flow prediction in a turbulent pipe
Zhen-Su She, Xi Chen, You Wu +1
The Karman constant κ- widely used in atmospheric science and engineering turbulence modelling, and proposed by Prandtl in 1925 and von Karman in 1930 to describe the mean velocity…
Quantifying wall turbulence via a symmetry approach. Part I. A Lie group theory
Zhen-Su She, Xi Chen, Fazle Hussain
First principle based prediction of mean flow quantities of wall-bounded turbulent flows (channel, pipe, and turbulent boundary layer - TBL) is of great importance from both physic…