Results 121 to 130 of about 1,392 (299)

Study on the Deflagration Characteristics of Methane–Air Premixed Gas in Sudden Expansion Pipelines

open access: yesEnergies
This study employs both experimental and numerical simulation methods to systematically investigate the influence of sudden expansion diameter ratios on methane–air premixed flame propagation, explosion overpressure, and the evolution of turbulent ...
Ning Zhou   +9 more
doaj   +1 more source

Beyond Closed Loops: Advancing Climate Change Mitigation by Collaborative Open Approaches

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Even as world leaders emphasize the urgency of limiting global warming, a slow transition to a circular economy persists. While climate mitigation efforts focus on renewable energy and efficiency measures, addressing the 45% of emissions from product manufacturing remains critical.
Anna‐Kristin Behnert   +2 more
wiley   +1 more source

High Entropy–Driven Performance Enhancement in Perovskite Oxides for Energy Conversion and Storage Systems

open access: yesCarbon Energy, EarlyView.
High‐entropy perovskite oxides enable tunable structures and properties through multi‐cation disorder and entropy stabilization. This review summarizes advances in synthesis, structural and defect engineering, and their applications in OER/ORR, CO2RR, and electrochemical energy storage, highlighting in situ characterization and modeling that clarify ...
Obeylaw Moyo   +8 more
wiley   +1 more source

RANS Simulation of Turbulent Diffusive Combustion using Open Foam

open access: yesJournal of Applied Fluid Mechanics, 2016
Schemes to write the flow equations in discreet form, solution solvers, pre and post data processing utilitiesprovidedbyOpenFoamlibraries, areusedtobuildafinitevolumeexecutableforsimulatinga low speed, turbulent and rate controlled diffusive CH4-Air ...
Luis Felipe Gutiérrez   +2 more
doaj  

Displacement speeds in turbulent premixed flame simulations

open access: yes, 2008
The theory of turbulent premixed flames is based on a characterization of the flame as a discontinuous surface propagating through the fluid. The displacement speed, defined as the local speed of the flame front normal to itself, relative to the unburned fluid, provides one characterization of the burning velocity.
Day, Marcus S.   +4 more
openaire   +1 more source

Mass Production of Waste PVC‐Mediated Bamboo‐Derived Hard Carbon for Ultra‐Long Life Sodium Storage

open access: yesCarbon Energy, EarlyView.
By a scalable PVC‐mediated bifunctional strategy, pre‐carbonized micrometer bamboo powder is converted into a functionally partitioned hard carbon anode with distinct domains. Featuring abundant internal closed pores and surface sp2‐enriched graphitic regions, this anode delivers exceptional high‐rate long‐cycle stability, retaining 93% capacity after ...
Wenjing Xu   +10 more
wiley   +1 more source

Deciphering Polarity Effects of Polymer to Regulate Li+ Ionic Environment in Solid Polymer Electrolytes for Solid‐State Lithium Batteries

open access: yesCarbon Energy, EarlyView.
We elucidate the fundamental influences of polymer polarity on Li+ ionic environments in solid polymer electrolytes by considering four critical components: Li+, FSI−, residual solvents, and polymer matrix. Beyond facilitating LiFSI dissociation and Li+ transport, our findings underscore previously overlooked roles of polymer polarity, thereby ...
Ji‐Oh Kim   +7 more
wiley   +1 more source

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