Results 51 to 60 of about 656,343 (134)

A Review of Marine Dual-Fuel Engine New Combustion Technology: Turbulent Jet-Controlled Premixed-Diffusion Multi-Mode Combustion

Energies
Driven by stringent emission regulations, advanced combustion modes utilizing turbulent jet ignition technology are pivotal for enhancing the performance of marine low-speed natural gas dual-fuel engines.
Jianlin Cao, Zebang Liu, Hao Shi, Dongsheng Dong, Shuping Kang, Lingxu Bu   +5 more
doaj   +1 more source

Advances on Deflagration to Detonation Transition Methods in Pulse Detonation Engines

Energies
Pulse detonation engines (PDEs) have become a transformative technology in the field of aerospace propulsion due to the high thermal efficiency of detonation combustion. However, initiating detonation waves within a limited space and time is key to their
Zhiwu Wang, Weifeng Qin, Lisi Wei, Zixu Zhang, Yuxiang Hui   +4 more
doaj   +1 more source

LES of n-Dodecane Spray Combustion Using a Multiple Representative Interactive Flamelets Model

Oil & Gas Science and Technology, 2017
A single-hole n-dodecane spray flame is studied in a Large-Eddy Simulation (LES) framework under Diesel-relevant conditions using a Multiple Representative Interactive Flamelets (MRIF) combustion model. Diesel spray combustion is strongly affected by the
Davidovic Marco, Falkenstein Tobias, Bode Mathis, Cai Liming, Kang Seongwon, Hinrichs Jörn, Pitsch Heinz   +6 more
doaj   +1 more source

Experimental and numerical investigation of ignition effects on explosion temperature fields in residential buildings

Case Studies in Thermal Engineering
This study systematically investigates the temperature evolution characteristics of methane explosions in a full-scale residential building under various ignition scenarios through a combined approach of full-scale experiments and CFD simulations.
Yue Zhang, Xinming Qian, Hongyu Li, Pengliang Li, Jizhe Wang, Fangzhou Li, Wulong Fan   +6 more
doaj   +1 more source

CFD Simulation of Pre-Chamber Spark-Ignition Large Bore CNG Engine: Model Development, Practical Applications, and Experimental Validation

Energies
This study develops and validates a three-dimensional CFD model for a 12 L large-bore active-type pre-chamber spark-ignition (PCSI) engine fueled by natural gas.
Soo-Jin Jeong, Seokpan Seo, Seong-Joon Moon   +2 more
doaj   +1 more source

An improved turbulent boundary layer inflow condition, applied to the simulation of jets in cross-flow [PDF]

The jet acting perpendicular to a cross-flow boundary layer is a commonly studied complex turbulent flow. Our research was motivated by their potential application in separation delay devices, where jets can be used to produce streamwise vortices in a ...
Jewkes, James
core  

Instability Wave Models of Turbulent Jets from Round and Serrated Nozzles [PDF]

, 2010
In this thesis we study pressure fluctuations associated with large-scale coherent structures in turbulent round and serrated jets. Linear disturbances to the turbulent mean flow of the round jet are modeled via linear stability analysis and the ...
Guðmundsson, Kristján
core   +1 more source

Experimental Study of the Performance of Turbo-Charged Gasoline Direct-Injection Engine Based on Different Pre-Chamber Structures

Energies
In this paper, in order to improve the fuel economy of the actual application of the engine under multi-operating conditions, an experimental study is carried out on a turbo-charged direct-injection engine based on different pre-chamber structures.
Xiaowei Zhao, Yuedong Sun, Zhendong Zhang, Congbo Yin   +3 more
doaj   +1 more source

Experimental investigation on the effect of compression ratio on detonation combustion characteristics of active pre-chamber engine

Case Studies in Thermal Engineering
Turbulent Jet Ignition (TJI) engines show promising potential for enhancing engine efficiency. However, they differ significantly from conventional spark ignition engines in terms of in-cylinder combustion modes, rendering traditional detonation ...
Jingxun Yang, Fangxi Xie, Xiaoping Li, Beiping Jiang, Zhaohui Jin, Bo shen, Yu Liu   +6 more
doaj   +1 more source

The Influence of Helium Addition on the Combustion Process in a Hydrogen-Fueled Turbulent Jet Ignition Engine

Applied Sciences
There are considerably fewer requirements for the quality of hydrogen combusted in an engine than its quality for fuel cells. Therefore, the analysis was carried out on the combustion of hydrogen–helium mixtures in an engine with a two-stage combustion ...
Dawid Mielcarzewicz, Ireneusz Pielecha
doaj   +1 more source