Results 111 to 120 of about 722,005 (275)

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

Stabilized detonation for hypersonic propulsion. [PDF]

Proc Natl Acad Sci U S A, 2021
Rosato DA, Thornton M, Sosa J, Bachman C, Goodwin GB, Ahmed KA.   +5 more
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

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

Recent Advance for PVDF Based Flexible Piezoelectric Sensors

EcoEnergy, EarlyView.
This review focus on the structural regulation of PVDF via boundary confinement, blending regulation, electric‐field‐assisted orientation, and chemical modification for flexible piezoelectric sensors. ABSTRACT The rapid advancement of flexible electronics, wearable devices, and biomedical engineering has spurred increasing demand for sensor materials ...
Chaoran Tan, Aokai Yang, Yuyang Ling, Meilin Liu, Liang Huang   +4 more
wiley   +1 more source

Effects of spatial and temporal inlet total pressure fluctuations on rotating detonation characteristics in ethylene-air mixture

Defence Technology
Inlet fluctuations in a rotating detonation engine play a critical role in shaping the propagation dynamics of rotating detonation waves (RDWs). Based on the OpenFOAM platform, numerical simulations are performed for ethylene-air mixture to investigate ...
Hongwei Tan, Yu Wu, Shunli Zhang, Huangwei Chen, Ting Ju, Yuejin Zhu   +5 more
doaj   +1 more source

Development of a Non-Equilibrium Plasma Assisted Rotating Detonation Engine

, 2022
A rotating detonation engine (RDE) is an experimental engine which uses constant volume detonative combustion in order to produce thrust. This type of combustion process is up to 20% more efficient than standard deflagration engines which use con ...
McBride, Thomas, Tariq-Shuaib, Yousuf
core  

Triboelectric–Electromagnetic Generator‐Enabled Hybrid Power Backpack for Self‐Powered Field Safety Management

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A lightweight hybrid backpack integrating SC‐TENGs and R‐EMGs harvests biomechanical energy during walking. With a low activation speed of 3 km h−1 and a high specific power of 0.18 W kg−1, it enables self‐powered field safety management. The power backpack refers to an energy‐harvesting solution engineered to mitigate battery reliance in wearable ...
Jie Chen, Qiao Bi, Chao Zuo, Qian Qin, Zhihao Hu, Hengyu Guo, Qian Tang   +6 more
wiley   +1 more source

Learning dominant physical processes with data-driven balance models. [PDF]

Nat Commun, 2021
Callaham JL, Koch JV, Brunton BW, Kutz JN, Brunton SL.   +4 more
europepmc   +1 more source

Exploration of Measuring Pressure Gain Combustion within a Rotating Detonation Engine

, 2018
Exploration of pressure gain within a Rotating Detonation Engine is investigated to determine maximum efficiency. Aerojet Rocketdyne’s Rotating Detonation Engine at Southwest Research Institute was used to find velocity measurements using Particle Image ...
Thurmond, Kyle, Dunn, Ian, Kareem A. Ahmed, Vasu, Subith, Kyle Thurmond, Subith Vasu, Ahmed, Kareem A., Stout, Jeffrey, Ian B. Dunn   +8 more
core   +1 more source