Results 61 to 70 of about 15,347 (202)

Comparison of Presumed PDF Models of Turbulent Flames

Journal of Combustion, 2012
Over the past years, the use of a presumed probability density function (PDF) for combustion progress variable or/and mixture fraction has been becoming more and more popular approach to average reaction rates in premixed and partially premixed turbulent
Chen Huang, Andrei N. Lipatnikov
doaj   +1 more source

Large eddy simulation for turbulent non-premixed fuel-rich combustion in a cylindrical combustor [PDF]

, 2006
No abstract ...
Jones, W.P., Paul, M.C., Paul, S.C.
core  

LES modelling of nitric oxide (NO) formation in a propane-air turbulent reacting flame [PDF]

, 2014
Large Eddy Simulation (LES) technique is applied to investigate the nitric oxide (NO) formation in the propane-air flame inside a cylindrical combustor.
Paul, Manosh C., Paul, Sreebash C., Saha, Suvash C.   +2 more
core  

Dynamics of Thermoacoustic Oscillations in Swirl Stabilized Combustor without and with Porous Inert Media

Journal of Combustion, 2022
Lean premixed (LPM) combustion processes are of increased interest to the gas turbine industry due to their reduction in harmful emissions. These processes are susceptible to thermoacoustic instabilities, which are produced when energy added by an in ...
Cody Dowd, Joseph Meadows
doaj   +1 more source

Fourier–physical space coherent structure in flame–vortex interactions relevant to flame–turbulence interactions using a new signal periodization procedure

AIP Advances, 2021
The aim of the current study is to characterize key multidimensional relationships between coherent structures in physical vs Fourier/scale space representations of flame–turbulence interactions, as a basis for future analysis of the nonlinear couplings ...
Paulo L. K. Paes, James G. Brasseur, Yuan Xuan, Yash G. Shah   +3 more
doaj   +1 more source

DNS Investigation on Autoignition and Flame Propagation in HCCI Combustion

Journal 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, Takehiko SEO, Masayasu SHIMURA, Naoya FUKUSHIMA, Mamoru TANAHASHI, Toshio MIYAUCHI   +5 more
doaj   +1 more source

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

Journal 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, Akihiro HAYAKAWA, Hideaki KOBAYASHI   +2 more
doaj   +1 more source

Synchronization framework for modeling transition to thermoacoustic instability in laminar combustors

, 2020
We, herein, present a new model based on the framework of synchronization to describe a thermoacoustic system and capture the multiple bifurcations that such a system undergoes.
Saha, Abhishek, Sujith, R. I., Unni, Vishnu R., Weng, Yue   +3 more
core   +1 more source

An efficient flamelet progress-variable method for modeling non-premixed flames in weak electric fields

, 2017
Combustion stabilization and enhancement of the flammability limits are mandatory objectives to improve nowadays combustion chambers. At this purpose, the use of an electric field in the flame region provides a solution which is, at the same time, easy ...
De Palma, P., de Tullio, M. D., Di Renzo, M., Pascazio, G.   +3 more
core   +1 more source

Non-linear simulations of combustion instabilities with a quasi-1D Navier-Stokes code

, 2010
As lean premixed combustion systems are more susceptible to combustion instabilities than non-premixed systems, there is an increasing demand for improved numerical design tools that can predict the occurrence of combustion instabilities with high ...
Allam, Annaswamy, Baillot, Bell, Boyer, Candel, Cohen, Culick, Culick, Davies, Disselhorst, Ditaranto, Dowling, Ducruix, Fichera, Fleifil, Keller, Levine, McManus, Nils Erland L. Haugen, Peters, Poinsot, Polifke, Polifke, Prasad, Rayleigh, Schuller, Sigurd Sannan, White, Øyvind Langørgen   +29 more
core   +1 more source