Results 51 to 60 of about 279 (180)

Effects of wall temperature on non-premixed micro-combustion: A comparative experimental study of copper and aluminum in Swiss-roll chambers

Fuel Processing Technology
Micro-combustors, vital for compact power and propulsion, face significant challenges in maintaining flame stability and achieving high blow-off limits.
Soroush Sarrafan Sadeghi, Sadegh Tabejamaat, Amirreza Ghahremani, Sina Narimani Asl   +3 more
doaj   +1 more source

Turbulent Effects on the Flame behavior of Turbulent Counterflow Nonpremixed Flames.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1999
The flow field of the turbulent counterflowing stream with and without nonpremixed flames, and the behavior of diffusion region of turbulent nonpremixed flames have been investigated experimentally. The turbulent characteristics of each side flow in a counterflowing stream would be regarded as keeping their initial turbulent characteristics from one ...
Akio KITAJIMA, Toshihisa UEDA, Akiko MATSUO, Masahiko MIZOMOTO   +3 more
openaire   +2 more sources

Mathematical thermo‐mechanical analysis on flame‐solid interaction: Steady laminar stagnation flow flame stabilized at a plane wall coupled with thermo‐elasticity model

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 104, Issue 12, December 2024.
Abstract A laminar stagnation flow flame stabilized at a plane wall is theoretically analyzed, coupled with a thermo‐elasticity model in the wall. Mathematical models for both the flame and the wall will be proposed, and corresponding analytical solutions based on their dimensionless forms will be obtained. The mathematical analysis of this flame‐solid
Chunkan Yu, Mohammad Mahdi Malayeri, Thomas Böhlke, Zheng Chen, Felipe Minuzzi   +4 more
wiley   +1 more source

Laminar flame speeds of dimethyl ether-propane/butane/propylene air mixtures

Frontiers in Fuels
IntroductionDimethyl ether (DME) has potential to be used both blended with or as an alternative to Liquefied Petroleum Gas (LPG) to reduce the carbon emissions of a fuel used globally for cooking and heating.
Jordan Walsh, Dezheng Li, Yanming Chen, Yang Zhang, Ruoyang Yuan   +4 more
doaj   +1 more source

Flame sheet starting estimates for counterflow diffusion flame problems

Journal of Computational Physics, 1987
The authors develop a flame sheet starting procedure for the numerical modelling of laminar counterflow diffusion flame problems. The model couples the equations of mass and tangential momentum with a Shvab- Zeldovich equation to provide estimates for the mass flux in the transverse direction, the similarity function, the temperature and the stable ...
Keyes, D. E., Smooke, M. D.
openaire   +2 more sources

Catalytic Upgrading of Acetaldehyde to Acetoin Using a Supported N‐Heterocyclic Carbene Catalyst

ChemSusChem, Volume 17, Issue 22, November 25, 2024.
Discover our innovative synthesis of 3‐hydroxy‐2‐butanone (acetoin) from ethanol‐derived acetaldehyde, a key step in producing C4 molecules from bio‐based resources. Using an N‐heterocyclic carbene (NHC) catalyst, this process offers efficient C−C bond formation with high selectivity and robust performance.
Maurice Belleflamme, Jerome Hommes, Riza Dervisoglu, Ettore Bartalucci, Thomas Wiegand, Anna Katharina Beine, Walter Leitner, Andreas J. Vorholt   +7 more
wiley   +1 more source

Advancements in Solid Oxide Fuel Cell Technology: Bridging Performance Gaps for Enhanced Environmental Sustainability

Advanced Energy and Sustainability Research, Volume 5, Issue 11, November 2024.
This study offers a concise yet comprehensive overview of solid oxide fuel cell (SOFC) technology. It showcases the structure of an SOFC, outlining its benefits, challenges, and the techniques used in its fabrication. The review also discusses key performance and efficiency metrics and highlights the versatile applications of SOFC in transportation ...
Jingjing Li, Junhan Cheng, Yubing Zhang, Zhonghao Chen, Mahmoud Nasr, Mohamed Farghali, David W. Rooney, Pow‐Seng Yap, Ahmed I. Osman   +8 more
wiley   +1 more source

Effect of liquid droplets on premixed laminar acetone flames

Applications in Energy and Combustion Science
The effects of fuel droplets on premixed laminar counterflow acetone flames are numerically investigated, and parametric studies are conducted for a range of monodisperse droplet sizes, equivalence ratios, and liquid fractions of fuel.
Shiyao Ni, Tze Yeung Cho, Simone Hochgreb   +2 more
doaj   +1 more source

Material selection and manufacturing for high‐temperature heat exchangers: Review of state‐of‐the‐art development, opportunities, and challenges

International Journal of Ceramic Engineering &Science, Volume 6, Issue 5, September 2024.
High temperature heat exchangers may be designed from ceramics to achieve higher performance, and various materials and manufacturing techniques can help achieve highly efficient high temperature systems. Abstract Many energy systems demand heat transfer at high temperatures to keep up with high demand for power, so high‐temperature material that can ...
Corson L. Cramer, Edgar Lara‐Curzio, Amy M. Elliott, Trevor G. Aguirre, Bola Yoon, Brian A. Fricke, Vivek Rao, Prashant Jain, Kashif Nawaz   +8 more
wiley   +1 more source

A randomization and unrolling framework to improve deep neural networks modelling chemistry integration across multiple combustion regimes

Applications in Energy and Combustion Science
Solving finite-rate chemical kinetics through direct integration is computationally expensive and often becomes a performance bottleneck in high-fidelity combustion simulations.
Weitao Liu, Andreas Kronenburg, Thorsten Zirwes   +2 more
doaj   +1 more source