Results 71 to 80 of about 17,301 (197)

QFM: quenching flamelet-generated manifold for modelling of flame–wall interactions

Combustion theory and modelling, 2020
This work introduces a new method to improve the accuracy of the flamelet-generated manifold (FGM) method under conditions of flame–wall interactions (FWI). Special attention is given to the prediction of the pollutant CO.
D. Efimov, Philip de Goey, J. V. van Oijen   +2 more
semanticscholar   +1 more source

Lyapunov exponent as a metric for assessing the dynamic content and predictability of large-eddy simulations [PDF]

, 2017
Metrics used to assess the quality of large-eddy simulations commonly rely on a statistical assessment of the solution. While thesemetrics are valuable, a dynamicmeasure is desirable to further characterize the ability of a numerical simulation for ...
,, Ihme, M, Labahn, JW, Magri, L, Nastac, G   +4 more
core   +1 more source

Evaluation of the Flamelet/Progress-Variable Approach and Flamelet-Generated Manifolds Method in Laminar Counter-Flow Diffusion Flame

Journal of the Japan Institute of Energy, 2021
To evaluate characteristics of the Flamelet/Progress-Variable approach (FPV) and Flamelet-Generated Manifolds method which can consider a detailed chemical reaction mechanism, a combustion simulation was performed in a laminar counter-flow diffusion flame. While the numerical solutions of the FPV reproduced the measurements and almost completely agreed
Yohsuke MATSUSHITA, Ryoma OZAWA, Shota AKAOTSU, Yoshiya MATSUKAWA, Yasuhiro SAITO, Hideyuki AOKI, Weeratunge MALALASEKERA   +6 more
openaire   +2 more sources

Stochastic and deterministic multiple mapping conditioning for turbulent reacting jets

, 2010
The work presented in this thesis explores the feasibility of the Multiple Mapping Conditioning (MMC) approach and its closures for real (laboratory) flames.
Vogiatzaki, Konstantina, Vogiatzaki, Konstantina   +1 more
core   +1 more source

Numerical investigation of combustion, performance, and emission attributes of premixed ammonia-hydrogen/air flames within a swirl burner of a gas turbine

Case Studies in Thermal Engineering
This study investigates numerically combustion attributes and NOx formation of premixed ammonia-hydrogen/air flames within a swirl burner of a gas turbine considering various conditions of hydrogen fraction (HF: 0 %, 5 %, 30 %, 40 %, and 50 ...
Mohammed El-Adawy, Mhadi A. Ismael, Medhat A. Nemitallah   +2 more
doaj   +1 more source

Study on the Dynamic Combustion Characteristics of a Staged High-Temperature Rise Combustor

Energies
Currently, steady-state analysis predominates in combustion chamber design, while dynamic combustion characteristics remain underexplored, and there is a lack of a comprehensive index system to assess dynamic combustion behavior.
Meng Li, Jinhu Yang, Cunxi Liu, Fuqiang Liu, Kaixing Wang, Changlong Ruan, Yong Mu, Gang Xu   +7 more
doaj   +1 more source

Joint PDF Closure of Turbulent Premixed Flames [PDF]

, 2018
In this paper, a novel model for turbulent premixed combustion in the corrugated flamelet regime is presented, which is based on transporting a joint probability density function (PDF) of velocity, turbulence frequency and a scalar vector.
Hack, Mathias, Jenny, Patrick
core  

Comparison of flamelet models for CH4/O2 diffusion flame using FINE/Open [PDF]

, 2023
LAUREA MAGISTRALEQuesto studio presenta una comparazione di modelli Flamelet per la simulazione di una fiamma diffusiva metano/ossigeno utilizzando FINE/Open. Sono stati valutati e confrontati tre differenti modelli con i risultati DNS.
LUNGHI, ALBERTO GIUSEPPE
core  

A comparative study on ammonia-air and ammonia-oxygen combustion in a gas turbine combustor: Flow/flame interactions and NOx emissions

Case Studies in Thermal Engineering
In this study, ammonia combustion was numerically investigated within a gas turbine combustor model to explore its potential for ammonia-based energy applications.
Mohammed El-Adawy, Mohamed Hamdy, Medhat A. Nemitallah   +2 more
doaj   +1 more source

Flame dynamics of air-diluted methanol spray combustion in confined swirling vitiated hot coflow

Applications in Energy and Combustion Science
This study employs swirling hot coflow to ensure improved fuel-air mixture and stable flame, which are essential for designing low-emission, swirl-stabilized combustors.
Zafar Alam, Bharat Bhatia, Ashoke De
doaj   +1 more source