Results 61 to 70 of about 84,868 (188)

Influence of a Hub-Groove on the Unsteady Losses of a Transonic Compressor Stage [PDF]

, 2010
In this paper the influence of a non-symmetrical sidewall-contour on the flow field of an axial compressor is investigated. In earlier studies, carried out at the DLR Institute of Propulsion Technology in Cologne, it has been shown that it is ...
Nicke, Eberhard, Stollenwerk, Stefan, Kröger, Georg, Rochhausen, Stefan   +3 more
core  

Wavy‐Interlocked Stretchable Triboelectric Nanogenerators Enhanced by Liquid Metal Microflowers for Self‐Powered Wearable Motion Monitoring

Advanced Science, EarlyView.
Schematic showing a stretchable triboelectric nanogenerator based on interlocked wavy architectures that uses EGaIn microflower‐embedded PVDF‐TrFE and Nylon‐6 nanofiber membranes. The multi‐petaled, electron‐rich EGaIn microflowers enhance interfacial polarization and capacitance, while the interlocked wavy architecture enlarges the effective contact ...
Qianqian Xu, Huimin Li, Hanmin Zeng, Yahui Meng, Yimeng He, Xinke Hu, Senfeng Zhao, Jianxun Zhang, Peiqiong Zhou, Kechao Zhou, Dou Zhang, Chris Bowen, Yan Zhang   +12 more
wiley   +1 more source

Atomic Tuning of Metal‐Support Interactions for Pathway‐Selective CO2 Photoreduction on TiO2

Advanced Science, EarlyView.
Single‐atom Fe and Cu catalysts anchored on TiO2 steer photocatalytic CO2 reduction toward distinct pathways. Fe sites favor rapid *CO desorption and selective CO formation, whereas Cu sites stabilize *CHO intermediates, enabling deep reduction and C─C coupling. Combined spectroscopy and DFT calculations reveal how metal–support interactions and oxygen
Dongyun Kim, Wonjae Ko, Byoung‐Hoon Lee, Sanghoon Kim, Yun Do Kim, Hyunsoo Ahn, Yoon Jung, Chan Woo Lee, Kug‐Seung Lee, Eunhee Gong, Junho Lee, Minho Kim, Taeghwan Hyeon, Su‐Il In   +13 more
wiley   +1 more source

Numerical analysis of the influence of high-altitude and low Reynolds number effects on an axial transonic compressor

Advances in Aerodynamics
To address the influence of the high-altitude low Reynolds number effect on compressors, this study investigates an axial transonic compressor through a numerical approach based on the Reynolds-averaged Navier–Stokes equations.
Yuhui Huang, Qin Li, Yancheng You
doaj   +1 more source

Harmonizing Rigidity and Flexibility: Embedding COF Quantum Dots Into Extracellular Matrix Gel as Carbon Monoxide Depot for Acoustically Triggered Time‐Programmable Anti‐Infective Therapy

Advanced Science, EarlyView.
A rigid‑flexible integrated CO depot is engineered by embedding rigid COFQDs into a flexible ECM gel network. The rigid framework enables high‑capacity CO storage and sonodynamic bacterial killing, while the flexible ECM gel controls sustained CO release, collectively eradicating multidrug‑resistant infection and promoting scarless healing.
Baohong Sun, Fang Han, Chunxiao Zhu, Zhiyuan Yang, Haoru Wang, Jinpei Mei, Jie Chen, Jingwen Zhu, Zihan Bo, Taju Wu, Xiaogang Zhou, Tao Ma, Yutian Su, Youhui Lin   +13 more
wiley   +1 more source

Precise Management of n‐Value Distribution at the 2D/3D Interface Enabling Efficient Wide‐Bandgap Perovskite Solar Cells

Advanced Science, EarlyView.
This study elucidates the phase transition pathway of surface‐engineered perovskite films. During spin‐coating, n = 1 2D perovskite dominantly forms, while subsequent annealing drives OA+ release and induces conversion to higher n‐value 2D phases.
Yajie Yang, Jiaxin Ha, Yang Zhang, Yunfan Wang, Ting Jiang, Jingquan Zhang, Lili Wu, Wenwu Wang, Guanggen Zeng, Baoyan Fan, Mohammad Abdul Halim, Xia Hao, Dewei Zhao   +12 more
wiley   +1 more source

Experimental Investigation of Shock Boundary/Layer Interaction on a Fan Profile Under Various Inlet Conditions

International Journal of Turbomachinery, Propulsion and Power
Transonic compressors encounter significant challenges from shock formations due to high-speed supersonic blade tips, particularly at high altitudes where lower Reynolds numbers result in laminar boundary layer separation and increased mixing losses ...
Ahmed H. Hanfy, Piotr Kaczynski, Piotr Doerffer, Pawel Flaszynski   +3 more
doaj   +1 more source

Influence of blade geometry on secondary flow development in a transonic centrifugal compressor

Journal of the Global Power and Propulsion Society, 2018
Due to the increasing demand for higher efficiencies of centrifugal compressors, numerical optimization methods are becoming more and more relevant in the design process.
Moritz Mosdzien, Martin Enneking, Alexander Hehn, Daniel Grates, Peter Jeschke   +4 more
doaj   +1 more source

3D unsteady flow in oscillating compressor cascade [PDF]

, 2004
An experimental and computational study has been carried out to enhance current understanding of three dimensional (3D) cascade aeroelastic mechanisms. 3D unsteady pressure data produced during executing this project is the first-of-its-kind, which can ...
Yang, Hui
core  

Engineering Large‐Grain Metal Halide Perovskite Films via Chemical Vapor Deposition for High‐Performance, Ultralow‐Noise Perovskite Photodetectors

Advanced Science, EarlyView.
Chemical vapor deposition produces large‐grain, phase‐pure CsPbBr3 films (grains up to 35 µm) with Drude‐like terahertz photoconductivity and twofold higher carrier mobility versus spin‐coated references. These microstructural advances translate into photodetectors with a detectivity of 8.4 × 1012 Jones, dark current below 1 pA cm−2, X‐ray sensitivity ...
Roel Vanden Brande, Sudipta Seth, Lei Gao, Bapi Pradhan, Dilkhush Khicher, Anastasiia Bazylevska, Wei Qu, Christian Sternemann, Hai Wang, Steven De Feyter, Weidong Xu, Fei Zhang, Mischa Bonn, Johan Hofkens, Elke Debroye   +14 more
wiley   +1 more source