Results 41 to 50 of about 135 (129)

Dynamics and interactions of counter-rotating waves in rotating detonation combustors

Experimental Thermal and Fluid Science
Better understanding of non-canonical modes such as counter-rotating wave dynamics provides valuable insights for future rotating detonation engine injector design and combustion mode control. The objective of this work is to study the dynamics and interactions of counter-rotating waves in an RDC experimentally. Previous experimental and numerical data
Provence Barnouin, Christian Oliver Paschereit, Eric Bach, Myles D. Bohon   +3 more
openaire   +2 more sources

The Reduction of Group 6–8 Transition Metal Oxides with Hydrogen—From Ore Smelting to Reaction Pathways#

European Journal of Inorganic Chemistry, Volume 28, Issue 30, October 22, 2025.
As the reduction of transition metal oxides by coal poses a significant climate risk, the use of alternative reducing agents such as hydrogen is becoming increasingly important. This review summarizes the current knowledge of the reduction pathways of transition metal oxides from groups 6 to 8.
Michael Häger, Simon Keilholz, Holger Kohlmann   +2 more
wiley   +1 more source

Continuous Detonation Combustor Operating on a Methane–Oxygen Mixture: Test Fires, Thrust Performance, and Thermal State

Aerospace
Test fires of a rotating detonation engine (RDE) annular combustor operating on a methane–oxygen mixture were conducted. Compared to the original RDE combustor previously tested, it was modified in terms of changing the layout of the water cooling system,
Sergey M. Frolov, Vladislav S. Ivanov, Yurii V. Kozarenko, Igor O. Shamshin   +3 more
doaj   +1 more source

Performance Analysis of Pulse Detonation Micro Gas Turbines Under Typical Operating Conditions

Energy Science &Engineering, Volume 13, Issue 10, Page 4690-4703, October 2025.
ABSTRACT Considering the benefits of pulse detonation combustion, including low entropy increase, high cycle thermal efficiency, and self‐pressurization, a performance calculation model for a pulse detonation micro gas turbine was established using methane as fuel. The study primarily investigated the impact of component parameters, ambient conditions,
Weifeng Qin, Zhiwu Wang, Lisi Wei, Zixu Zhang   +3 more
wiley   +1 more source

A Critical Review of Limitations and Challenges in Advancement of HNF as a Green Oxidizer for Composite Solid Propellant Formulations

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 7, Page 11-30, July 2025.
ABSTRACT Hydrazinium nitroformate (HNF) is a chlorine‐free, high‐energy oxidizer with promising applications in green propulsion systems. This review examines the thermal decomposition, combustion kinetics, flame structure, and behavior of HNF, while critically evaluating the current body of literature.
Lakshay Bansal, Prakhar Jindal, Vineet Kumar Rathi   +2 more
wiley   +1 more source

Investigation of the Pressure Gain Characteristics and Cycle Performance in Gas Turbines Based on Interstage Bleeding Rotating Detonation Combustion

Entropy, 2019
To further improve the cycle performance of gas turbines, a gas turbine cycle model based on interstage bleeding rotating detonation combustion was established using methane as fuel.
Lei Qi, Zhitao Wang, Ningbo Zhao, Yongqiang Dai, Hongtao Zheng, Qingyang Meng   +5 more
doaj   +1 more source

Valorization of Waste Biomass to Biofuels for Power Production and Transportation in Optimized Way: A Comprehensive Review

Advanced Energy and Sustainability Research, Volume 5, Issue 10, October 2024.
Biofuels have a variety of sources that can be converted into energy and fuel with the help of several thermochemical and biological conversion processes. This article provides the fundamental and applied concept of thermochemical and biological conversions, highlighting combustion, pyrolysis, fermentation, gasification, and anaerobic digestion along ...
Farrukh Jamil, Abrar Inayat, Murid Hussain, Parveen Akhter, Zainul Abideen, Chaouki Ghenai, Abdallah Shanableh, Tamer M. M. Abdellatief   +7 more
wiley   +1 more source

Visualization of the Detonation Wave Structure in a Small-Scale Hydrogen–Oxygen Rotating Detonation Combustor

Aerospace
This study presents the high-speed visualization of the detonation wave structure in a small-scale hydrogen–oxygen rotating detonation combustor. A 68 mm Rotating Detonation Combustor was modified with a quartz-glass ring, such that radial optical access
Wolfgang Armbruster, Ewen Bard, Michael Börner, Kilian Rheindorf, Jan Martin, Leon Lober, Stephan General, Justin S. Hardi   +7 more
doaj   +1 more source

Coal dilemma: Is in situ clean power plant a way out?

EcoEnergy, Volume 2, Issue 2, Page 220-228, June 2024.
New clean power generation system based on controlled pulverized coal detonation. Abstract The global shift toward cleaner energy sources, driven by carbon neutrality goals and climate change urgency, faces a paradoxical rise in coal consumption despite efforts to expand alternative energies. Economic disparities drive reliance on coal, particularly in
Baisheng Nie, Liangliang Jiang, Xianfeng Liu, Bozhi Deng, Peng Liu, Hao Zhang, Suihong Song, Ke Yan, Jiansheng Zhang, Ke Liu, Zhangxin Chen, S. M. Farouq Ali   +11 more
wiley   +1 more source

Exploring conventional and emerging dehydration technologies for slurry/liquid food matrices and their impact on porosity of powders: A comprehensive review

Comprehensive Reviews in Food Science and Food Safety, Volume 23, Issue 3, May 2024.
Abstract The contribution of dehydration to the growing market of food powders from slurry/liquid matrices is inevitable. To overcome the challenges posed by conventional drying technologies, several innovative approaches have emerged. However, industrial implementation is limited due to insufficient information on the best‐suited drying technologies ...
Afroza Sultana, Sara Aghajanzadeh, Bruno Thibault, Cristina Ratti, Seddik Khalloufi   +4 more
wiley   +1 more source