Results 61 to 70 of about 512 (129)

Computer Modeling of a Rotating Detonation Engine in a Rocket Configuration [PDF]

, 2015
Detonation-based combustors leverage the higher thermodynamic efficiency of the Atkinson cycle compared to the traditional deflagration-based combustion of the Brayton cycle.
Shah, Nihar
core   +1 more source

Propulsion Performance of Cylindrical Rotating Detonation Engine [PDF]

, 2020
This study evaluated the propulsion performance of a nozzleless, cylindrical rotating detonation engine (RDE). Using a C2H4–O2 mixture, the RDE was tested in a low-back-pressure environment at propellant mass flow rates of 8–45  g/s.
Funaki, Ikkoh, Goto, Keisuke, Kasahara, Jiro, Kawasaki, Akira, Kim, Juhoe, Matsuo, Akiko, Matsuoka, Ken, Yokoo, Ryuya   +7 more
core   +1 more source

A Solar to Chemical Strategy: Green Hydrogen as a Means, Not an End

Global Challenges, Volume 8, Issue 6, June 2024.
As the chemical industry seeks to achieve net‐zero emissions, green hydrogen emerges as a critical solution. This work explores the potential of photocatalysis in the production of essential commodity chemicals, such as NH3 and H2O2, driven by sunlight and water.
Gabriel A. A. Diab, Marcos A. R. da Silva, Guilherme F. S. R. Rocha, Luis F. G. Noleto, Andrea Rogolino, João P. de Mesquita, Pablo Jiménez‐Calvo, Ivo F. Teixeira   +7 more
wiley   +1 more source

Numerical Analysis of the Characteristic Chemical Timescale of a C₂H₄/O₂ Non-Premixed Rotating Detonation Engine

Energies
A three-dimensional numerical investigation using ethylene–oxygen was conducted to examine the characteristics of detonation waves in a non-premixed rotating detonation engine (RDE) across three equivalence ratio conditions: fuel-lean, stoichiometric ...
Mohammed Niyasdeen Nejaamtheen, Bu-Kyeng Sung, Jeong-Yeol Choi   +2 more
doaj   +1 more source

PEM Electrolysis in a Stirred‐Tank Bioreactor Enables Autotrophic Growth of Clostridium ragsdalei with CO2 and Electrons

ChemElectroChem, Volume 11, Issue 6, March 15, 2024.
By integration of a PEM electrolysis single cell to the bottom of a stirred tank bioreactor, an integrated bio‐electrocatalytic system (BES) was developed. The BES allows control of potential, pH and temperature with an online‐detection of product formation rates.
Irina Schwarz, Arielle Rieck, Asad Mehmood, Raphaela Bublitz, Lukas Bongers, Dirk Weuster‐Botz, Tim‐Patrick Fellinger   +6 more
wiley   +1 more source

Rejoint of Carbon Nitride Fragments into Multi‐Interfacial Order‐Disorder Homojunction for Robust Photo‐Driven Generation of H2O2

Advanced Materials, Volume 36, Issue 9, March 1, 2024.
Herein, a directed healing process is employed to splice carbon nitride pieces into a carbon nitride homojunction with multiple order‐disorder interfaces. The resultant catalyst exhibits boosted charge dynamics and more spatially and orderly separated redox centers, resulting in a remarkable yield, an excellent selectivity, and a prominent solar‐to ...
Fengting He, Yangming Lu, Yuzhao Wu, Shuling Wang, Yang Zhang, Pei Dong, Yongqiang Wang, Chaocheng Zhao, Shuaijun Wang, Jinqiang Zhang, Shaobin Wang   +10 more
wiley   +1 more source

Numerical Analysis of a Rotating Detonation Engine in the Relative Reference Frame [PDF]

A two-dimensional, computational fluid dynamic (CFD) simulation of a semi-idealized rotating detonation engine (RDE) is described. The simulation operates in the detonation frame of reference and utilizes a relatively coarse grid such that only the ...
Paxson, Daniel E.
core   +2 more sources

A Theoretical Review of Rotating Detonation Engines [PDF]

, 2019
Rotating detonation engines are a novel device for generating thrust from combustion, in a highly efficient, yet mechanically simple form. This chapter presents a detailed literature review of rotating detonation engines.
Chin, Rey C., Chinnici, Alfonso, Evans, Michael J., Kildare, Jordan A.C., Medwell, Paul R., Rubaiyat, Shekh N.H., Shaw, Ian J., Sparks, Ciaran A.M.   +7 more
core   +3 more sources

Industrially Relevant Conditions in Lab‐Scale Analysis for Alkaline Water Electrolysis

ChemElectroChem, Volume 11, Issue 1, January 2, 2024.
Water electrolysis: The discrepancy between academic research and industrial application remains a major obstacle in the development of new electrode materials for alkaline water electrolysis. Therefore, an advanced beaker cell setup is introduced, which matches the reaction conditions in terms of temperature, electrolyte concentration, current density
Niklas Thissen, Julia Hoffmann, Sebastian Tigges, Dominik A. M. Vogel, Jil J. Thoede, Stefanie Khan, Nicolai Schmitt, Saskia Heumann, Bastian J. M. Etzold, Anna K. Mechler   +9 more
wiley   +1 more source

Experimental Investigation of Thermal Prediction and Heat Transfer Characteristics of Two-Phase RDE during Long-Duration Operation

Energies
Accurately predicting the thermal characteristics and heat transfer distribution of the rotating detonation engine (RDE) and acquiring a clear understanding of the performance and mechanism of the rotating detonation are of great significance for ...
Jiaojiao Wang, Feilong Song, Qi Chen, Jinhui Kang, Yun Wu   +4 more
doaj   +1 more source