Results 111 to 120 of about 93,522 (307)

Unsteady flow mechanisms in the last stage of a transonic low pressure steam turbine - multistage effects and tip leakage flows

Journal of the Global Power and Propulsion Society, 2017
In this paper, an unsteady investigation of the last two stages of a low-pressure steam turbine with supersonic airfoils near the tip of the last stage’s rotor blade is presented.
Ilias Papagiannis, Asad Raheen, Altug Basol, Anestis Kalfas, Reza Abhari, Hisataka Fukushima, Shigeki Senoo   +6 more
doaj   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

Aerodynamic performance optimization and unsteady flow field stability analysis of a supercritical carbon dioxide centrifugal compressor with non-uniform blade tip clearance [PDF]

AIP Advances
Tip leakage flow is a critical factor constraining the efficiency and stability of supercritical carbon dioxide (SCO2) centrifugal compressors. To address this challenge, this study proposes a non-uniform blade tip clearance design and establishes a ...
Zhengjing Shen, Liuhao Liu, Jiangbo Wu, Senchun Miao, Xiaoze Du   +4 more
doaj   +1 more source

Hydrogel‐Based Airway‐on‐Tube With Perfusable Endothelial Lumen and Outward Epithelialization

Advanced Materials, EarlyView.
A hydrogel‐based airway‐on‐tube platform featuring a perfusable endothelial lumen and outward epithelialization is presented. The system supports primary human bronchial epithelial and lung microvascular endothelial coculture under air‐liquid interface conditions.
Ali Doryab, Jack F. Murphy, Michael Bartolf‐Kopp, Jenny C‐C Hsin, Alice Chernaik, Frank McCaughan, Yan Yan Shery Huang, Tomasz Jungst, Jürgen Groll   +8 more
wiley   +1 more source

An Experimental Investigation of the Flow Physics Associated With End Wall Losses and Large Rotor Tip Clearances as Found in the Rear Stages of a High Pressure Compressor [PDF]

The focus of this work was to characterize the fundamental flow physics and the overall performance effects due to increased rotor tip clearance heights in axial compressors. Data have been collected in the three-stage axial research compressor at Purdue
Berdanier, Reid A., Key, Nicole L.
core   +1 more source

Advanced Separators for Liquid and Quasi‐Solid Lithium Rechargeable Batteries: Design and Development

Advanced Materials, EarlyView.
This review traces the evolution of lithium‐ion battery separators from passive barriers to multifunctional components central to cell safety and performance. Polymer‐ceramic hybrids, nanofiber architectures, and bio‐derived membranes deliver ionic conductivities above 3 mS cm−1, thermal stability beyond 200 °C, and effective suppression of lithium ...
Karthik Vishweswariah, Ningaraju Gejjiganahalli Ningappa, Anil Kumar M. R., Jeremy I. G. Dawkins, Thiago M. G. Selva, Karim Zaghib   +5 more
wiley   +1 more source

Three-dimensional analysis of the Pratt and Whitney alternate design SSME fuel turbine [PDF]

The three dimensional viscous time-mean flow in the Pratt and Whitney alternate design space shuttle main engine fuel turbine is simulated using the average passage Navier-Stokes equations.
Adamczyk, J. J., Beach, T. A., Kirtley, K. R.   +2 more
core   +1 more source

Mechanical Stress Evolution in Polycrystalline Ge Thin Films Under MeV Ion Irradiation

Advanced Materials Interfaces, EarlyView.
Irradiation of polycrystalline Ge thin films with 1.8 MeV Au ions alters residual stress through defect generation and lattice expansion. Increasing fluence drives progressive lattice disorder and eventual amorphization. Polycrystalline Ge resists amorphization longer than crystalline Ge, as grain boundaries facilitate defect diffusion, significantly ...
Karla J. Paz Corrales, Aaron Reupert, Kevin Lubig, Frank A. Müller, Berit Marx‐Glowna, Ralf Röhlsberger, Till Weickhardt, Giancarlo Soavi, Martin Hafermann, Elke Wendler, Carsten Ronning   +10 more
wiley   +1 more source

Time-resolved PIV measurements of a tip leakage flow

International Journal of Aeroacoustics, 2016
Time-resolved PIV and time-resolved stereo PIV measurements are carried out in the tip leakage vortex of a single non-rotating airfoil placed in the potential core of a flanged rectangular jet in free field conditions. The experiment is based on the improvement of an existing rig: a cambered airfoil (NACA5510) now mounted with a [Formula: see text ...
Jacob, Marc C., Jondeau, Emmanuel, Li, Bo   +2 more
openaire   +3 more sources

Transient Vortex Dynamics in Tip Clearance Flow of a Novel Dishwasher Pump

Machines
Blade tip leakage vortex (TLV) is a critical phenomenon in hydraulic machinery, which can significantly affect the internal flow characteristics and deteriorate the hydraulic performance.
Chao Ning, Yalin Li, Haichao Sun, Yue Wang, Fan Meng   +4 more
doaj   +1 more source