[HTML][HTML] Turbulent drag reduction by polymer additives: Fundamentals and recent advances
L Xi - Physics of Fluids, 2019 - pubs.aip.org
A small amount of polymer additives can cause substantial reduction in the energy
dissipation and friction loss of turbulent flow. The problem of polymer-induced drag …
dissipation and friction loss of turbulent flow. The problem of polymer-induced drag …
[HTML][HTML] Rortex and comparison with eigenvalue-based vortex identification criteria
Y Gao, C Liu - Physics of Fluids, 2018 - pubs.aip.org
Most of the current Eulerian vortex identification criteria, including the Q criterion and the λ ci
criterion, are exclusively determined by the eigenvalues of the velocity gradient tensor or the …
criterion, are exclusively determined by the eigenvalues of the velocity gradient tensor or the …
Explicit formula for the Liutex vector and physical meaning of vorticity based on the Liutex-Shear decomposition
Y Wang, Y Gao, J Liu, C Liu - Journal of Hydrodynamics, 2019 - Springer
In the present study, the physical meaning of vorticity is revisited based on the Liutex-Shear
(RS) decomposition proposed by Liu et al. in the framework of Liutex (previously called …
(RS) decomposition proposed by Liu et al. in the framework of Liutex (previously called …
Experimental investigation of cross flow mixing in a randomly packed bed and streamwise vortex characteristics using particle image velocimetry and proper …
The study of flow and heat transfer through porous media or randomly packed beds is
important as these configurations are widely used in many engineering applications, for …
important as these configurations are widely used in many engineering applications, for …
Experimental study on structure and blow-off characteristics of NH3/CH4 co-firing flames in a swirl combustor
Experimental study on the unconfined lean premixed NH 3/CH 4/air flames with three CH 4
fractions of 0, 50%, and 100% stabilized on a bluff-body and swirl burner was investigated …
fractions of 0, 50%, and 100% stabilized on a bluff-body and swirl burner was investigated …
Galilean invariance of Rortex
Y Wang, Y Gao, C Liu - Physics of Fluids, 2018 - pubs.aip.org
A new vector named Rortex [C. Liu et al.,“Rortex—A new vortex vector definition and vorticity
tensor and vector decompositions,” Phys. Fluids 30, 035103 (2018)] was proposed to …
tensor and vector decompositions,” Phys. Fluids 30, 035103 (2018)] was proposed to …
Euler-Euler large eddy simulations of the gas–liquid flow in a cylindrical bubble column
Abstract In this work Euler-Euler Large Eddy Simulations (LES) of dispersed turbulent gas–
liquid flows in a cylindrical bubble column are presented. Besides, predictions are compared …
liquid flows in a cylindrical bubble column are presented. Besides, predictions are compared …
Experimental and numerical study of h2 enrichment on swirl/bluff-body stabilized lean premixed n-butane/air flame
This study focused on the stabilization of lean premixed flames of n-butane/H 2/air with
swirl/bluff-body. The research explored four different hydrogen fractions (0, 20%, 40%, and …
swirl/bluff-body. The research explored four different hydrogen fractions (0, 20%, 40%, and …
Time-resolved study of mixing and reaction in an aero-engine model combustor at increased pressure
In this study, we experimentally investigate large-scale vortex structures, fuel-air mixing and
reaction processes, which occur in a partially premixed swirl-stabilized ethylene/air flame in …
reaction processes, which occur in a partially premixed swirl-stabilized ethylene/air flame in …
Effect of high hydrogen enrichment on the outer-shear-layer flame of confined lean premixed CH4/H2/air swirl flames
In this study, we investigated the H 2-induced transition of confined swirl flames from the “V”
to “M” shape. H 2-enriched lean premixed CH 4/H 2/air flames with H 2 fractions up to 80 …
to “M” shape. H 2-enriched lean premixed CH 4/H 2/air flames with H 2 fractions up to 80 …