Results 41 to 50 of about 560 (183)

Experimental Analysis on Flame Flickering of a Swirl Partially Premixed Combustion

Energies, 2018
An experiment was conducted to explore the flickering parameters under varying mass flow rate of fuel m ˙ F with spatial analysis and global analysis.
Zhongya Xi, Zhongguang Fu, Syed Waqas Sabir, Xiaotian Hu, Yibo Jiang, Tao Zhang   +5 more
doaj   +1 more source

Effect of Injection Strategies in Diesel/NG Direct-Injection Engines on the Combustion Process and Emissions under Low-Load Operating Conditions

Energies, 2020
The direct injection of natural gas (NG), which is an important research direction in the development of NG engines, has the potential to improve thermal efficiency and emissions.
Jinze Li, Longfei Deng, Jianjun Guo, Min Zhang, Zhenyuan Zi, Jie Zhang, Binyang Wu   +6 more
doaj   +1 more source

Hydrogen‐Enriched Tri‐Fuel Combustion for Low‐Carbon Engines at Medium Engine Load: A Comprehensive CFD Analysis

Energy Science &Engineering, EarlyView.
CFD analysis of a diesel–CH4–H2 tri‐fuel engine shows that increasing hydrogen energy share (HES) enhances mixing and accelerates combustion, improving pressure, efficiency, and reducing CO and soot. At 60% HES, ISFC improves 26.2%, soot drops 95%, while NOx increases due to higher temperatures. ABSTRACT The global commitment to achieve net‐zero carbon
Md. Ifthaker Alam, Tafsirul Hassan, Md Imtiaz Hossen, Md. Shaib Hossain, Bandhon Saha Bijoy   +4 more
wiley   +1 more source

Predicted Thermoacoustic Flame Response at Megawatt Scale in a Near-Stoichiometric Atmospheric Industrial Furnace

Energies
While gas-turbine combustors have received much research attention, the forced response of large atmospheric industrial flames is much less studied. To improve the understanding of thermoacoustic instabilities in industrial combustion systems, the forced
Jesse Hofsteenge, Jim Kok
doaj   +1 more source

NOx reduction effect of two-stage combustion using tubular flame

Nihon Kikai Gakkai ronbunshu, 2015
The recuperative burner and the regenerative burner that applied exhaust heat recirculation are proposed as energy-saving technology in furnaces in a practical use.
Yosuke SHIRAGA, Tsukasa HORI, Jun HAYASHI, Akeshi KEGASA, Fumiteru AKAMATSU   +4 more
doaj   +1 more source

Scale-Resolving Simulation of a Propane-Fuelled Industrial Gas Turbine Combustor Using Finite-Rate Tabulated Chemistry

Fluids, 2020
The scale-resolving simulation of a practical gas turbine combustor is performed using a partially premixed finite-rate chemistry combustion model. The combustion model assumes finite-rate chemistry by limiting the chemical reaction rate with flame speed.
Kai Zhang, Ali Ghobadian, Jamshid M. Nouri   +2 more
doaj   +1 more source

Measurement of Temperature and H₂O Concentration in Premixed CH₄/Air Flame Using Two Partially Overlapped H₂O Absorption Signals in the Near Infrared Region

Applied Sciences, 2021
It is important to monitor the temperature and H2O concentration in a large combustion environment in order to improve combustion (and thermal) efficiency and reduce harmful combustion emissions.
Sunghyun So, Nakwon Jeong, Aran Song, Jungho Hwang, Daehae Kim, Changyeop Lee   +5 more
doaj   +1 more source

Coherent Stokes Raman Scattering for Simultaneous Measurement of CO2 and CH4 Temperatures

Journal of Raman Spectroscopy, EarlyView.
A three‐beam hybrid fs/ps CSRS method is employed to excite the rovibrational transitions in the Fermi‐dyad of CO2$$ {}_2 $$ and the v2$$ {v}_2 $$ mode of CH4$$ {}_4 $$. Time‐domain spectroscopic models are developed to extract the fuel and flame temperature profiles from experimental CH4$$ {}_4 $$ and CO2$$ {}_2 $$ spectra in a diffusion flame ...
Alexander M. Warner, Robert P. Lucht, Rohan M. Gejji, Carson D. Slabaugh   +3 more
wiley   +1 more source

Numerical analysis of flame characteristics and stability for conical nozzle burner

Journal of Thermal Engineering, 2019
The stability and the mean structure of methane partially premixed conical burner flames was investigated numerical ly using ANSYS Fluent. The study presents and discusses the stability curves of the partially premixed flame and maps the mean flame ...
Julanda Al Mawali, Sam M Dakka
doaj  

Turbulence and Combustion Model Choice for Modeling Methane-air Low Swirl Burners [PDF]

Journal of Applied Fluid Mechanics
Combustion plays a major role in satisfying enormous needs in our world, and burners are an essential component of industrial combustion applications. With its flame stabilization technique, low swirl burner (LSB) technology offers interesting outcomes ...
M. Ladjani, M. S. Lounici, S. Ouchikh
doaj   +1 more source