Results 71 to 80 of about 21,455 (208)

Numerical Investigation of a Lifted Flame With Nonequilibrium Scalar Variance and Dissipation Rate Closure Model for Flamelet Generated Manifold

International Journal of Aerospace Engineering
Large eddy simulation (LES) of a turbulent lifted ethylene/nitrogen jet flame in highly-heated coflow is presented. Turbulent combustion modeling is performed by using the flamelet generated manifold (FGM) approach and presumed probability density ...
Zhengxin Lai, Wenyan Song, Qiuyin Wang
doaj   +1 more source

Characteristics of H2/air annular jet flames using multiple shear coaxial injectors

Journal of Fluid Science and Technology, 2014
The heat transfer characteristics for the process tubes of a cracking furnace and the combustion chamber wall of a liquid oxygen/gas hydrogen rocket engine, both of which use multiple nozzles, are very important in terms of performance and safety.
Wataru MIYAGI, Takahiro MIKI, Tsuneyoshi MATSUOKA, Susumu NODA   +3 more
doaj   +1 more source

Data-driven propagation prediction of subsonic and supersonic turbulent jets by combining self-similarity analysis model and artificial neural network

Applications in Energy and Combustion Science
Previous self-similarity analysis models for turbulent jet flames (TJF) have inherent limitations in the flame tip location and velocity prediction based on experimental data.
Gang Li, Rui Yang, Haisheng Zhen, Hu Wang, Haifeng Liu, Qinglong Tang, Mingfa Yao   +6 more
doaj   +1 more source

Research in rocket and jet propulsion [PDF]

, 1950
When considering the problems of basic research in rocket and jet propulsion, it is profitable to keep in mind the salient features of rocket- and jet-propulsion engineering.
Tsien, Hsue-Shen
core  

Verification and Validation of a Low-Mach-Number Large-Eddy Simulation Code against Manufactured Solutions and Experimental Results

Energies, 2018
To investigate turbulent reacting flows, a low-Mach number large-eddy simulation (LES) code called ‘LESsCoal’ has been developed in our group. This code employs the Germano dynamic sub-grid scale (SGS) model and the steady flamelet/progress variable ...
Yingzu Liu, Kaidi Wan, Liang Li, Zhihua Wang, Kefa Cen   +4 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

OH planar laser-induced fluorescence measurement for H2/O2 jet diffusion flames in rocket combustion condition up to 7.0 MPa

Journal of Thermal Science and Technology, 2019
This study focuses on the application of OH planar laser-induced fluorescence (OH-PLIF) in high-pressure rocket combustion conditions, up to 7.0 MPa. The signal to noise ratio of PLIF degrades in high-pressure combustion owing to effects such as line ...
Yasuhiro HIGUCHI, Kiyonori TAKEUCHI, Yoshio NUNOME, Sadatake TOMIOKA, Kazuki SAKAKI, Taku KUDO, Akihiro HAYAKAWA, Hideaki KOBAYASHI   +7 more
doaj   +1 more source

Analysis of Interaction between Flame Torch and Independent Cocurrent Flow

Механика машин, механизмов и материалов, 2013
The paper presents a theoretical analysis of the flame spraying with an independent source of cocurrent flow. The spraying process is represented by "three-layer model", describing the motion of a two-phase jet in cocurrent flow.
M.A. Belotserkovsky
doaj  

Experimental investigation of the ignition dynamics in a premixed annular combustor using a pre-chamber ignition system

Energy Conversion and Management: X
In this paper, the ignition characteristics in a MICCA-type annular combustor are studied for the first time using a pre-chamber combustion (PCC) system.
Haroun Hassan, Hui Wang, Elsayed Barakat, Chenghao Qian, Haiwen Ge, Zhixin Zhu, Gaofeng Wang   +6 more
doaj   +1 more source

Investigations of eddy coherence in jet flows [PDF]

In turbulent shear flow the term coherent structures refers to eddies which are both spatially coherent, i.e., large eddies, aand also temporally coherent, i.e., they retain their identities for times which are long compared with their time scales in ...
Yule, A. J.
core   +1 more source