Results 51 to 60 of about 1,438 (176)

Effects of preferential diffusion and flame stretch on FGM method for numerical simulations of ammonia/air premixed combustion

Applications in Energy and Combustion Science
Importance of the considerations of preferential diffusion and flame stretch effects in the flamelet-generated manifold (FGM) method on the prediction accuracy is investigated by two-dimensional numerical simulations of cylindrical NH3/air premixed ...
Reo Kai, Shinya Ayukawa, Kazuhiro Kinuta, Ryoichi Kurose   +3 more
doaj   +1 more source

Aspects of Ammonia as Green Fuel for Propulsion Systems of Inland Water Vessels

Energy Technology, Volume 13, Issue 2, February 2025.
Within the CAMPFIRE project, an ammonia‐powered propulsion concept is being developed for use in inland water vessels. The core of the system is an ammonia‐fueled high‐speed engine that drives a generator. A cracker splits some of the ammonia into hydrogen and nitrogen to ensure better ignition and efficient combustion.
Annalena Braun, Niklas Gierenz, Samuel Braun, Heiko Kubach, Sören Bernhardt, Sascha Prehn, Moritz Müller, Lena Engelmeier, Lukas Fehlemann, Michael Steffen, Torsten Baufeld, Günther Neuhaus, Karsten Müller, Hinrich Mohr   +13 more
wiley   +1 more source

Large Eddy Simulation of a Bluff Body Stabilized Lean Premixed Flame

Journal of Combustion, Volume 2014, Issue 1, 2014., 2014
The present study is devoted to verify current capabilities of Large Eddy Simulation (LES) methodology in the modeling of lean premixed flames in the typical turbulent combustion regime of Dry Low NOx gas turbine combustors. A relatively simple reactive test case, presenting all main aspects of turbulent combustion interaction and flame stabilization ...
A. Andreini, C. Bianchini, A. Innocenti, Eliseo Ranzi   +3 more
wiley   +1 more source

Methodology for the numerical prediction of pollutant formation in gas turbine combustors and associated validation experiments [PDF]

, 2016
International audienceFor aircraft engine manufacturers the formation of pollutants such as NOx or soot particles is an important issue because the regulations on pollutant emissions are becoming increasingly stringent.
Bertier, Nicolas, Dupoirieux, Francis, Eberle, Christian, Geigle, Klaus Peter, Gerlinger, Peter, Guin, Christian, Henry, Luc-Henry   +6 more
core   +3 more sources

A Review of Research on the Thermo‐Force Characteristics of Scramjet Engine Wall Based on Neural Networks

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
With the development of high‐performance computing and advanced experimental methods, data‐driven machine learning, especially neural network technology, has shown great potential in fluid mechanics research and has become a fourth paradigm research tool.
Chen Qi, Wang Chenglong, Li Binhao, Lin Yuan, Zhou Zibo, Jin Wenzhong, Geng Chen   +6 more
wiley   +1 more source

Simulation of CO‐H2‐Air Turbulent Nonpremixed Flame Using the Eddy Dissipation Concept Model with Lookup Table Approach

Journal of Combustion, Volume 2012, Issue 1, 2012., 2012
We present a new combustion simulation technique based on a lookup table approach. In the proposed technique, a flow solver extracts the reaction rates from the look‐up table using the mixture fraction, progress variable, and reaction time. Look‐up table building and combustion simulation are carried out simultaneously.
Kazui Fukumoto, Yoshifumi Ogami, Fernando Biagioli   +2 more
wiley   +1 more source

Large Eddy Simulation of Autoignition in a Turbulent Hydrogen Jet Flame Using a Progress Variable Approach

Journal of Combustion, Volume 2012, Issue 1, 2012., 2012
The potential of a progress variable formulation for predicting autoignition and subsequent kernel development in a nonpremixed jet flame is explored in the LES (Large Eddy Simulation) context. The chemistry is tabulated as a function of mixture fraction and a composite progress variable, which is defined as a combination of an intermediate and a ...
Rohit Kulkarni, Wolfgang Polifke, Vladimir A. Sabel′nikov   +2 more
wiley   +1 more source

Investigation to charge cooling effect and combustion characteristics of ethanol direct injection in a gasoline port injection engine [PDF]

, 2015
© 2015 Elsevier Ltd. Ethanol direct injection has the potentials to increase the engine compression ratio and thermal efficiency by taking advantages of ethanol fuel such as the high octane number and latent heat.
Hong, G, Huang, R, Huang, Y
core   +2 more sources

Assessment of flamelet manifolds for turbulent flame-wall interactions in Large-Eddy Simulations

, 2023
A turbulent side-wall quenching (SWQ) flame in a fully developed channel flow is studied using Large-Eddy Simulation (LES) with a tabulated chemistry approach.
Ferraro, Federica, Hasse, Christian, Kaddar, Driss, Luo, Yujuan, Steinhausen, Matthias   +4 more
core   +1 more source

Ru‐Induced Defect Engineering in Co3O4 Lattice for High Performance Electrochemical Reduction of Nitrate to Ammonium

Small, Volume 20, Issue 33, August 15, 2024.
This work investigates defect engineering for nitrate reduction to ammonia. Here, flame spray pyrolysis for the integration of Ru into the Co3O4 lattice, coupled with electroreduction conditioning treatment is utilized. This controlled defecting approach results in increased NH4+ production at 10 at.% Ru loading.
Maggie Lim, Zhipeng Ma, George O'Connell, Jodie A. Yuwono, Priyank Kumar, Rouhollah Jalili, Rose Amal, Rahman Daiyan, Emma C. Lovell   +8 more
wiley   +1 more source