Results 71 to 80 of about 646,208 (201)

Reaction-diffusion effects on species mixing rates in turbulent premixed methane-air combustion

open access: yes, 2009
The scalar mixing time scale, a key quantity in many turbulent combustion models, is investigated for reactive scalars in premixed combustion. Direct numerical simulations of threedimensional, turbulent Bunsen flames with reduced methane-air chemistry ...
Grout, R.W.   +3 more
core  

Environmental Burden of Diesel Engines: A Life‐Cycle Assessment and the Imperative for Cleaner Alternatives

open access: yesGlobal Challenges, Volume 10, Issue 7, July 2026.
This study reveals that the use phase of diesel engines contributes the greatest environmental burden due to intensive diesel consumption and related emissions. Life‐cycle assessment highlights severe impacts on climate change, fossil fuel depletion, acidification, and particulate pollution, emphasizing the importance of biodiesel integration, hybrid ...
Sanjeev Kumar   +8 more
wiley   +1 more source

DNS Investigation on Autoignition and Flame Propagation in HCCI Combustion

open access: yesJournal of Fluid Science and Technology, 2011
2-dimensional direct numerical simulation (DNS) of autoignition and flame propagation of turbulent premixed mixture has been conducted to investigate the turbulent combustion mechanism in homogeneous charge compression ignition (HCCI) engines.
Hiroaki FUKUMOTO   +5 more
doaj   +1 more source

Development of novel laser diagnostic techniques for the quantitative study of premixed flames [PDF]

open access: yes, 2010
The main topic of this thesis concerns the development and application of laser diagnostic techniques for accurate temperature measurements and for the determination of flamefront properties in premixed flames that can serve as input data for ...

core   +2 more sources

Compatibilization and Reinforcement of PHB/PBAT Blends via Sequential Blending of Surface‐Modified Cellulose

open access: yesPolymer Engineering &Science, Volume 66, Issue 7, Page 5358-5370, July 2026.
Sequential blending improved the mechancial properties of PHB/PBAT/cellulose composites as compared to the one‐step batch mixing method. ABSTRACT Polyhydroxybutyrate (PHB) is a natural and biodegradable polymer generated by bacteria. While its applications to potentially replace petroleum‐based plastics are severely limited due to its brittleness and ...
Wai Hin Lee   +3 more
wiley   +1 more source

Numerical investigation on the combustion characteristics of turbulent premixed ammonia/air flames stabilized by a swirl burner

open access: yesJournal of Fluid Science and Technology, 2016
The present study is dedicated to understand the combustion characteristics of turbulent premixed swirl flames for ammonia (NH3)/air mixture in gas turbine combustors by a numerical investigation.
Kapuruge Don Kunkuma Amila SOMARATHNE   +2 more
doaj   +1 more source

Posidonia oceanica Leaves as a Natural Filler for Poly(Butylene Succinate‐Co‐Adipate) Composites: Characterization and Biodegradation Assessment in Seawater

open access: yesJournal of Vinyl and Additive Technology, Volume 32, Issue 4, Page 988-1005, July 2026.
This study shows that incorporating 5–10 wt.% Posidonia oceanica , with or without micro‐talc, in PBSA preserves thermal stability, modifying crystallization behavior, and maintains good filler dispersion and interfacial adhesion. Mechanical properties are moderately stiffened. ABSTRACT This study investigates the use of Posidonia oceanica (PO) leaves,
Chiara Pedrotti   +8 more
wiley   +1 more source

Experimental and theoretical studies of combustion rates at high pressure [PDF]

open access: yes, 2004
The thesis reports experimental and theoretical studies of premixed combustion rates at high pressure and temperature. It focuses on measurements of laminar and turbulent burning velocities at high pressures and temperatures approaching those in engines,
AI-Shahrany, Ali Saied
core   +3 more sources

Simulations of edge-flame propagation in turbulent non-premixed jets

open access: yes, 2007
Ignition, flame propagation and stabilisation have been simulated and analysed in a turbulent jet of non-premixed methane and air. The first order Conditional Moment Closure (CMC) turbulent combustion model was fully coupled with a Reynolds-Averaged ...
Richardson, E.S., Mastorakos, E.
core   +1 more source

Non-linearities in the thermoacoustic response of a premixed swirl burner [PDF]

open access: yes, 2009
PhDLean premixed combustion remains one of the simplest and most effective methods of reducing NOx emissions in industrial gas turbines. Lean premixed flames are however prone to an undesirable side effect known as combustion instability, reducing ...
Hosseini, S. M. Reza
core   +2 more sources

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