Results 51 to 60 of about 7,852 (251)
Case Studies in Thermal EngineeringThe enhanced performance of aircraft engines has intensified the challenge of improving cooling efficiency. In addressing the issue of inadequate cooling air in the idle and taking-off states, which adversely affects the working environment of the ...
Zhen-Xi Yang +5 more
doaj +1 more source
Flight of the dragons: a global review of migration in Odonata
Biological Reviews, EarlyView.ABSTRACT Insects are the most abundant and ecologically important animal migrants. Yet, we know relatively little about the patterns and processes underlying insect migration. Dragonflies (Anisoptera) and damselflies (Zygoptera) comprise the ancient insect order Odonata, whose ancestors were the first organisms to fly on Earth.
Johanna S.U. Hedlund +3 more
wiley +1 more source
MXenes as a Versatile Platform for High‐Energy‐Density Asymmetric Supercapacitors
Carbon Energy, EarlyView.MXenes with high conductivity and tunable surface chemistry are reviewed as advanced electrodes for asymmetric supercapacitors. MAX‐phase synthesis, surface and interlayer engineering, defect modulation, and composite designs are discussed, highlighting enhanced ion transport, pseudocapacitance, energy density, cycling stability, and sustainable routes
Seul‐Yi Lee +3 more
wiley +1 more source
Durable Fuel Cell Cathode Enabled by Pt Embedded Nanoscale Carbon Network via a Scalable Process
Carbon Energy, EarlyView.Platinum nanoparticles embedded nanoscale carbon network (Pt‐e‐Cn) are developed via a scalable flame spray pyrolysis process. Proton exchange membrane fuel cells (PEMFC) employing mesoporous Pt‐e‐Cn cathode electrocatalysts exhibit exceptional durability without compromising performance.
Suriya Venkatesan +10 more
wiley +1 more source
Performance Analysis of Airfoil-like Spoiler Element Air Ejector Based on Topology Optimization [PDF]
Zhengzhou Daxue xuebao. Gongxue banAiming at the problem of low entrainment ratio of the traditional air ejector, the topology optimization method was used to optimize its structure. And an air ejector with airfoil-like spoiler element was proposed based on the topology optimization ...
LIU Huadong, ZHANG Ya, HAO Qi, SUN Hao
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The Filament Extension Atomization Process for Powder Production of Elastic Fluids
Chemie Ingenieur Technik, EarlyView.Filament extension atomization is a promising technique for spraying a wide range of materials, enabling narrow droplet size distributions. This study examines the behavior of various fluids and suspensions to define application limits and identify optimal operating conditions.
Moritz Neukötter +4 more
wiley +1 more source
Chemie Ingenieur Technik, EarlyView.Ultrasonic sensors are evaluated for their applicability in dynamic gas–liquid systems. By comparing sensor data with two independent optical reference methods, their robustness and reliability are demonstrated under varying flow conditions and tray geometries in column systems.
Niklas Breuer +2 more
wiley +1 more source
Journal of Applied Fluid Mechanics, 2021 The computation of ejector geometry for a given fluid is essential and plays a crucial role in creating an ejector profile and performance analysis.
S. K. Yadav, K. M. Pandey, R. Gupta
doaj
Air entrainment in hydraulic structures: a review [PDF]
Maritime Engineering, 1998 Dropshafts, siphons, inclined conduits, and weirs are some hydraulic structures which involve air entrainment. This paper investigates three mechanisms of air entrainment suggesting broad-brush equations to predict the aeration rate. Air bubble transport in closed conduits downstream of the entrainment point is also considered.
openaire +1 more source