Results 31 to 40 of about 2,832 (254)

Density fluctuation correlations in free turbulent binary mixing [PDF]

, 1994
This paper is devoted to the analysis of the turbulent mass flux and, more generally, of the density fluctuation correlation (d.f.c.) effects in variable-density fluid motion.
Chassaing, Patrick, Joly, Laurent, Harran, Gilles   +2 more
core   +1 more source

Large Eddy Simulation of a turbulent swirling coaxial jet [PDF]

, 2010
This work uses the Large Eddy Simulation (LES) technique to study velocity and passive scalar mixing along with intermittency of a spatially evolving turbulent coaxial swirl jet.
Savill, A.M., Jenkins, K.W., Ranga Dinesh, K.K.J., Kirkpatrick, M. P., Savill, Mark A., Jenkins, Karl W., Ranga Dinesh, K. K. J., Kirkpatrick, M.P.   +7 more
core   +1 more source

Quantitative Assessment of Flame Stability Through Image Processing and Spectral Analysis [PDF]

, 2015
This paper experimentally investigates two generalized methods, i.e., a simple universal index and oscillation frequency, for the quantitative assessment of flame stability at fossil-fuel-fired furnaces.
Zhou, Hao, Liu, Shi, Sun, Duo, Yan, Yong, Lu, Gang   +4 more
core   +1 more source

Numerical Simulation of Laminar and Turbulent Methane/Air Flames Based on a DRG-Derived Skeletal Mechanism

Eurasian Chemico-Technological Journal, 2020
Simulation of turbulent flames using detailed chemical mechanisms is still a challenge in numerical combustion due to the large number of species and the stiffness of the system of governing equations.
F. C. Minuzzi, Ch. Yu, U. Maas
doaj   +1 more source

Impact of atomization and spray flow conditions on droplet μ-explosions and temporal self-similarity in the FSP process

Applications in Energy and Combustion Science, 2023
Flame spray pyrolysis (FSP) is a technique for the synthesis of metal oxide nanoparticles by combusting precursor solutions in a spray flame. The combustion of certain precursor solutions is known to lead to severe droplet disruptions (μ-explosions) in ...
M.F.B. Stodt, J. Kiefer, U. Fritsching
doaj   +1 more source

Sooting turbulent jet flame: characterization and quantitative soot measurements [PDF]

Applied Physics B, 2011
Computational fluid dynamics (CFD) modelers require high-quality experimental data sets for validation of their numerical tools. Preferred features for numerical simulations of a sooting, turbulent test case flame are simplicity (no pilot flame), well-defined boundary conditions, and sufficient soot production.
Kohler, M., Geigle, K. P., Meier, W., Crosland, B., Thomson, K. A., Smallwood, G.   +5 more
openaire   +4 more sources

Ultrasmall High‐Entropy Materials: Nanoscale Effects, Synthesis, and Mechanistic Insights

Advanced Functional Materials, EarlyView.
This review article focuses on sub‐10 nm high‐entropy materials that combine nanoscale design with complex compositions for next‐generation applications. ABSTRACT Ultrasmall high‐entropy nanomaterials (USHENMs, <10 nm) merge multicomponent chemistry with size‐dependent effects, forming a distinct class of materials with unprecedented properties.
Yueyue He, Wenbo Wang, Simon Schweidler, Yanjiao Ma, Ben Breitung, Torsten Brezesinski   +5 more
wiley   +1 more source

Auto-Ignition and Flame Stabilization of Hydrogen / Natural Gas / Nitrogen Jets in a Vitiated Cross-Flow at Elevated Pressure

, 2013
The influence of natural gas (NG) on the auto-ignition behavior of hydrogen (H2)/nitrogen (N2) fuel jets injected into a vitiated cross-flow was studied at conditions relevant for practical combustion systems (p = 15 bar, Tcross-flow = 1173 K).
Aigner, Manfred, Griebel, Peter, Steinberg, Adam M., Fleck, Julia M., Fleck, Julia, Arndt, Christoph M.   +5 more
core   +1 more source

Influence of bluff-body and swirl on mixing and intermittency of jets [PDF]

, 2010
In this paper we present the modelled results of turbulence, scalar mixing and intermittency for three different basic fluid dynamical problems using large eddy simulation (LES). The modelled problems are a turbulent round jet, a bluff body stabilised
Kirkpatrick, M. P., Jenkins, Karl W., Savill, Mark, Ranga Dinesh, K. K. J.   +3 more
core   +1 more source

Safety of Sodium‐Ion Batteries: Evaluation and Perspective from Component Materials to Cells, Modules, and Packs

Advanced Energy Materials, EarlyView.
This review provides a bottom‐up evaluation of sodium‐ion battery safety, linking material degradation mechanisms, cell engineering parameters, and module/pack assembly. It emphasizes that understanding intrinsic material stability and establishing coordinated engineering control across hierarchical levels are vital for preventing degradation coupling ...
Won‐Gwang Lim, Seoa Kim, Erik A. Wu, Darren H. S. Tan, Shawn Peng, Xiaolin Li   +5 more
wiley   +1 more source