Results 71 to 80 of about 286,382 (289)

Research on the Flow Mechanism of a High-Loading Biomimetic Low-Pressure Turbine Cascade

open access: yesAerospace
The biomimetic turbine has an excellent flow drag reduction ability and wide incidence adaptability, so it has the potential to achieve high efficiency within a wide working range of high-performance variable cycle engines.
Hanliu Deng   +8 more
doaj   +1 more source

Scheduling and conducting power performance testing of a small wind turbine [PDF]

open access: yes, 2013
The global growth in small wind turbine (SWT) markets and in the number of SWT manufacturers has brought about an urgent need for more rigorous testing of SWTs in order to ensure safety, reliability and performance.
Malla, A., Whale, J., McHenry, M.P.
core  

Supercapacitor Safety: Overcharge‐Induced Failure Mechanisms in Electrochemical Double‐Layer Capacitors

open access: yesAdvanced Science, EarlyView.
Time‐resolved synchrotron radiography reveals the internal evolution of electrochemical double‐layer capacitors under abusive overcharge. EDLCs are shown to follow a thermally driven failure pathway involving electrolyte decomposition, gas generation, and structural collapse, distinct from chemically driven thermal runaway effects of Lithium‐ion ...
Thomas Dore   +19 more
wiley   +1 more source

Lanthanide Separation via Selective Precipitation Under Neutral Aqueous Conditions With a Functionalized EDTA Chelator

open access: yesAngewandte Chemie, EarlyView.
An organic‐solvent‐free approach for efficient recovery of Nd from waste hard‐disk drive NdFeB magnets is achieved via selective precipitation with ethylenediaminetetraacetic acid (EDTA) substituted by hydrophobic cs‐124, under neutral conditions. Three precipitation cycles lead to 99.7% Nd puritywith 77% recovery yield; the chelator is simply recycled
Jiajun Qiu   +3 more
wiley   +2 more sources

Modal analysis and test verification of moving blades of the compressor in a heavy-duty gas turbine

open access: yesReli fadian
The first stage blades of a heavy-duty gas turbine compressor are newly independently developed and designed, which use the advanced 3D modeling technology to design high-performance blade profiles.
ZHOU Lili, ZHANG Shanzi, ZHAO Lianhui
doaj   +1 more source

Experimental and Computational Analysis of the Unstable Flow Structure in a Centrifugal Compressor with a Vaneless Diffuser

open access: yesChinese Journal of Mechanical Engineering, 2019
The unstable flow phenomena in compressors, such as stall and surge, are closely related to the efficiency and the operating region. It is indispensable to capture the unstable flow structure in compressors and understand the mechanism of flow ...
Xiang Xue, Tong Wang
doaj   +1 more source

Self‐Sustaining Sensing Systems: Integration Strategies and Signal–Power Matching in Energy‐Harvesting Electronics

open access: yesAdvanced Science, EarlyView.
Energy‐harvesting‐integrated sensors couple ambient energy conversion with sensing, processing, and wireless communication. This review organizes recent progress through integration architectures and operating principles, revisiting co‐packaged, monolithic, and co‐functional designs together with always‐on, event‐driven, and multi‐modal sensing modes ...
Taehyun Park   +5 more
wiley   +1 more source

Film Cooling Performance and Superposition Method of an Actual Turbine Vane at High Freestream Turbulence

open access: yesAerospace
This study aims to enhance the understanding of film cooling performance in an actual turbine vane by investigating influencing factors and developing more precise numerical prediction methods. Pressure sensitive paint (PSP) testing and Reynolds-Averaged
Peng Chu   +7 more
doaj   +1 more source

Enhanced Acoustic Adhesion Enabling Agile and Small Wall‐Climbing Robot Design With Anisotropic Origami Structure

open access: yesAdvanced Science, EarlyView.
This 28 g robot incorporates innovative ring structures and anisotropic origami springs to achieve high speeds and exceptional load capacity. It successfully carries a 100 g payload while ascending walls or ceilings at speeds of up to 8 and 20 cm/s, demonstrating enhanced adhesion and maneuverability over current climbing robots.
Xinxian Chen   +5 more
wiley   +1 more source

Hydrogen Production from Ammonia Electrochemical Cracking

open access: yesAdvanced Science, EarlyView.
NH3 electrochemical cracking (e‐cracking) is a complementary technique to centralized thermal cracking for releasing H2 from NH3. In this article, we review recent advances in catalyst development for these cracking techniques and conduct a techno‐economic analysis (TEA) to evaluate the economic feasibility of e‐cracking.
Yike Ye   +4 more
wiley   +1 more source

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