Results 111 to 120 of about 11,005 (312)

CFD prediction of coupled radiation heat transfer and soot production in turbulent flames [PDF]

open access: yes, 1996
The mechanisms governing the formation and destruction of soot in turbulent combustion are intimately coupled to thermal radiation due to the strong dependence of sooting processes and radiative loss on temperature.
Bressloff, N., Bressloff, N. W.
core  

Numerical investigation of forced ignition in laminar counterflow non-premixed methane-air flames [PDF]

open access: yes, 2007
Simulations of forced ignition of non-premixed laminar counterflow flames are used to study the effect of strain rate on ignition success. A one dimensional calculation is performed, using detailed methane chemical kinetics and treating the spark as an ...
Richardson, E.S., Mastorakos, E.
core   +1 more source

Influence of Turbulent Scalar Mixing Physics on Premixed Flame Propagation

open access: yesJournal of Combustion, 2011
The influence of reactive scalar mixing physics on turbulent premixed flame propagation is studied, within the framework of turbulent flame speed modelling, by comparing predictive ability of two algebraic flame speed models: one that ...
H. Kolla, N. Swaminathan
doaj   +1 more source

Does sensitivity of measured scaling exponents for turbulent burning velocity to flame configuration prove lack of generality of notion of turbulent burning velocity? [PDF]

open access: yes, 2016
There exists a large scatter in reported scaling (power) exponents q characterizing response of turbulent flame speed St or burning velocity Ut to changes of various factors such as the root-mean-square turbulent velocity u′, integral length scale L or ...
Lipatnikov, Andrei   +3 more
core   +1 more source

Flow and combustion in disc and pent-roof SI engines [PDF]

open access: yes, 2006
Reported in this thesis is a study of combustion in a disc-shaped combustion chamber spark ignition engine, and in-cylinder flow and combustion in an idealised pent-roof spark ignition engine. Both engines were skip fired, to remove residuals and ensure
Murad, Ahmad E M A, Murad, Ahmad E. M. A
core  

Study of jet precession, recirculation and vortex breakdown in turbulent swirling jets using LES. [PDF]

open access: yes, 2009
Large eddy simulations (LES) are used to investigate turbulent isothermal swirling flows with a strong emphasis on vortex breakdown, recirculation and instability behaviour.
Ranga Dinesh, K.K.J.   +3 more
core   +1 more source

The Effects of Enzyme Pretreatment Extraction on Lipid Recovery With Normal Phase HPLC

open access: yesJournal of the American Oil Chemists' Society, EarlyView.
ABSTRACT With the increasing interest in the commercialization of microalgal fermentation‐based products, sustainable and efficient oil extraction methods have been developed for manufacturing and analytical testing. Due to the variability and resilience of micro‐algae cell walls, traditional lipid extraction methods such as Folch and Bligh and Dyer ...
Zhehan Jiang   +4 more
wiley   +1 more source

Soot and radiation modelling in buoyant fires [PDF]

open access: yes, 1990
This study seeks to advance present modelling capabilities in respect of soot and thermal radiation emission from fires. Such developments are crucial to the improved estimate of the hazard potential of accidental fires.
Syed, K. J.
core  

Simulations of combustion roar in turbulent attached and lifted turbulent methane jet flames

open access: yesEngineering Transactions, 2014
The present work presents sample results of preliminary computations of the turbulent aerothermodynamic flow field and of the noise generated by the flame front, due to turbulent fluctuations in the flame (combustion roar), in lifted and attached jet ...
P. MARAZIOTI, P. KOUTMOS
doaj  

Timescales Associated with the Evolution of Reactive Scalar Gradient in Premixed Turbulent Combustion: A Direct Numerical Simulation Analysis

open access: yesFire
The fractional change in the reaction progress variable gradient depends on the flow normal straining within the flame and also upon the corresponding normal gradients of the reaction rate and its molecular diffusion transport. The statistical behaviours
Nilanjan Chakraborty, Cesar Dopazo
doaj   +1 more source

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