Results 61 to 70 of about 575 (165)

Exploring Time‐Domain Femtosecond Rotational Coherent Raman Scattering for Diagnostics

Journal of Raman Spectroscopy, Volume 56, Issue 8, Page 666-672, August 2025.
The diagnostic potential of femtosecond (fs) rotational coherent Raman scattering (RCRS) in the time domain is initially investigated. Experiments in air and pure nitrogen are reported, revealing the temperature sensitivity in the recorded fs‐RCRS temporal scans.
Meena Raveesh, Ali Hosseinnia, Abhijit Padhiary, Xiangyu Wei, Vassily Kornienko, Elias Kristensson, Andreas Ehn, Brian Peterson, Mark Linne, Joakim Bood   +9 more
wiley   +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

Green Ammonia as a Decentralized, Cross‐Sector Energy Vector for the German Energy Transition

Chemie Ingenieur Technik, Volume 97, Issue 6, Page 599-607, June 2025.
The Fraunhofer flagship project “AmmonVektor” brings together eight Fraunhofer Institutes to develop innovative technologies for decentralized ammonia synthesis, utilization, and logistics. The aim is to establish ammonia as a key technology to enhance Germany's energy sovereignty.
Clara Maria Watermann, Tim Nitsche, Lénárd‐István Csepei, Andreas Menne, Barbara Zeidler‐Fandrich   +4 more
wiley   +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

Optical Study and Numerical Simulation of the Effect of n‐butanol Mass on the Combustion Process of a n‐butanol/Diesel Dual‐Fuel Engine

Energy Science &Engineering, Volume 13, Issue 6, Page 2695-2706, June 2025.
An optical engine testing platform has been built. The influence of n‐butanol mass on the combustion process was studied in the RCCI combustion mode using intake injection of n‐butanol and direct injection of diesel in the cylinder. Using high‐speed imaging technology to capture the combustion process inside the cylinder, the dual color method is used ...
Wei Mingrui, Zhou Qian, Liu Jinping
wiley   +1 more source

Detached Eddy Simulation (DES) of a Turbulent Premixed Flame Stabilized on a Bluff Body

Proceedings in Applied Mathematics and Mechanics, Volume 25, Issue 2, June 2025.
ABSTRACT As the demand for net‐zero emissions intensifies, low‐emission fuels (LEFs) are increasingly explored for their potential to reduce pollutants in combustion systems. The present study investigates the flame dynamics and pollutant emissions (CO and NOx) of different LEFs using detached eddy simulations (DES), a method that offers better ...
Abdelkader Hemaizia, Dominique Thévenin, Cheng Chi   +2 more
wiley   +1 more source

Flow Field of Turbulent Premixed Combustion in a Cyclone-Jet Combustor

Journal of Thermal Science and Technology, 2007
The flow field in highly turbulent premixed combustion has been examined, using a cyclone-jet combustor. The shear-strain rate is obtained by PIV system. Results show that, in combustion field, mean axial velocity does not decay along center axis and RMS
Kazuhiro YAMAMOTO, Satoshi INOUE, Hiroshi YAMASHITA, Daisuke SHIMOKURI, Satoru ISHIZUKA   +4 more
doaj   +1 more source

Numerical Implementation and validation of turbulent premixed combustion model for lean mixtures

MATEC Web of Conferences, 2018
The present paper discusses the numerical investigation of turbulent premixed flames under lean conditions. Lean premixed combustion, a low NOx emission technique but are prone to instabilities, extinction and blow out.
Muppala Siva, Madhav Rao Vendra C.
doaj   +1 more source

Large eddy simulation of spray combustion in a lean direct injection combustor using a novel subgrid-scale stress model

Applications in Energy and Combustion Science
Large eddy simulation (LES) is an important tool for studying turbulent spray combustion and developing next-generation combustion devices. In LES, the subgrid-scale (SGS) stress needs to be modeled with the closure models.
Yicun Wang, Kun Luo, Hualin Xiao, Tai Jin, Changxiao Shao, Jianren Fan   +5 more
doaj   +1 more source

Large Eddy Simulation of a Swirl-Stabilized Pilot Combustor from Conventional to Flameless Mode

Journal of Combustion, 2016
This paper investigates flame and flow structure of a swirl-stabilized pilot combustor in conventional, high temperature, and flameless modes by means of a partially stirred reactor combustion model to provide a better insight into designing lean ...
Ehsan Fooladgar, C. K. Chan
doaj   +1 more source