Results 111 to 120 of about 231,983 (247)

Designing a Triplet 2‐Formylphenylnitrene With Fast Tunneling Reactivity

Chemistry – A European Journal, EarlyView.
A 3‐CF3 substituent accelerates tunneling in triplet 2‐formylphenylnitrene, making its reactivity in cryogenic matrices too fast for conventional IR spectroscopic detection. Bringing this chemistry to low‐temperature solutions allows suppression of intrinsic nitrene dimerization through faster cyclization, which even outcompetes the 1,4‐H shift ...
Sofia Braz, Cláudio M. Nunes, Simon Schlosser, Peter R. Schreiner, Rui Fausto   +4 more
wiley   +1 more source

Detonation modelling of non-ideal high explosives [PDF]

, 2010
High explosives (HE) are used in many fields where the energy liberated by the combustion process is used to perform useful work. High explosives normally burn via a detonation; a supersonic wave consisting of a shock wave coupled to chemical energy ...
Kiyanda, Charles B.
core  

Laminar Burning Velocity of Ammonia‐Hydrogen Mixtures Predicted by Machine Learning

Chemie Ingenieur Technik, EarlyView.
Ammonia–hydrogen blends aid defossilization, but slow combustion kinetics require complex modeling. Although chemical kinetic modeling is computationally expensive, machine learning surrogates offer fast predictions. This study trained GPR, DT, and ANN models on 1445 experimental points.
Georg Klepp, Aditya Sharma, Helene Dörksen   +2 more
wiley   +1 more source

Analysis of Aerodynamic Characteristics of Rotating Detonation Turbine Based on Proper Orthogonal Decomposition Method

Aerospace
The unsteady interactions in rotating detonation turbine engines (RDTE) remain poorly understood. To address this, a 2D numerical model integrating a rotating detonation combustor (RDC) with a first-stage turbine is established to analyze flow structures
Meiting Ling, Ting Zhao, Wenguo Luo, Jianfeng Zhu, Yancheng You   +4 more
doaj   +1 more source

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

Effects of the injection area ratios on the propagating characteristics of ethylene/air rotating detonation waves

Propulsion and Energy
Numerical simulations are performed to investigate the propagation characteristics of ethylene/air rotating detonation waves in a two-dimensional computational domain, by solving the Navier–Stokes equations with an in-house code.
Zhenyi Chen, Sihang Rao, Jian Peng, Xu Xu   +3 more
doaj   +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

Selected topics from the 28th International Colloquium on the Dynamics of Explosions and Reactive Systems, Naples, Italy, June 19-24, 2022. [PDF]

Shock Waves, 2023
Ciccarelli G.
europepmc   +1 more source

Advances in vital‐sign prediction and early‐warning models for underground coal mine workers integrating environmental factors

Deep Underground Science and Engineering, EarlyView.
This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu, Dawei Cui, Yingjie Liu, Yuntao Liang, Yue Zhang   +4 more
wiley   +1 more source

Turbulent Detonation Transition in a Linearized Rotating Detonation Engine

, 2018
An experimental investigation to characterize flame and detonation propagation dynamics within a Rotating Detonation Engine (RDE) using a hydrogen air mixture is conducted.
Chambers, Jessica M., Hoke, John, Kareem Ahmed, Christopher A. Stevens, Jessica Chambers, Frederick Schauer, John Hoke, Ahmed, Kareem A., Schauer, Frederick R., Stevens, Christopher A.   +9 more
core   +1 more source