Results 41 to 50 of about 24,787 (347)

Experimental Examination of an Axial Compressor as a Basis for an Active Stall Avoidance System

International Journal of Rotating Machinery, 2000
A single-stage subsonic compressor was examined with respect to compressor instabilities. During the inception of rotating stall, the transients of the pressure rise and mass flow were measured as well as their hysteresis.
Richard Schulze, Dietmar K. Hennecke, Thuyen Le, Manfred Glesner   +3 more
doaj   +1 more source

Simulation of entropy generation during the evolution of rotating stall in a two-stage variable-pitch axial fan

Advances in Mechanical Engineering, 2019
Rotating stall is a common instability phenomenon that occurs in turbomachinery. Rotating stall 3D instability can be characterized as one or more stall cells rotating at a fraction of rotor velocity.
Lei Zhang, Zhi Zheng, Qian Zhang, Songling Wang   +3 more
doaj   +1 more source

Dynamic System Modeling of a Hybrid Neural Network with Phase Space Reconstruction and a Stability Identification Strategy

Machines, 2022
Focusing on the identification of dynamic system stability, a hybrid neural network model is proposed in this research for the rotating stall phenomenon in an axial compressor.
Mingming Zhang, Jia Zhang, Anping Hou, Aiguo Xia, Wei Tuo   +4 more
doaj   +1 more source

Effect of Circumferential Single Casing Groove Location on the Flow Stability under Tip-Clearance Effect in a Transonic Axial Flow Compressor Rotor

Energies, 2021
Numerical simulations have been performed to study the effect of the circumferential single-grooved casing treatment (CT) at multiple locations on the tip-flow stability and the corresponding control mechanism at three tip-clearance-size (TCS) schemes in
Xiaoxiong Wu, Bo Liu, Botao Zhang, Xiaochen Mao   +3 more
doaj   +1 more source

Effect of blade geometry on the aerodynamic loads produced by vertical-axis wind turbines [PDF]

, 2010
Accurate aerodynamic modelling of vertical-axis wind turbines poses a significant challenge. The rotation of the turbine induces large variations in the angle of attack of its blades that can manifest as dynamic stall.
ETI, Fletcher T. M., Fletcher T. M., Mertens S., Niven A. J., Thwaites B.   +5 more
core   +1 more source

Risk of Retinopathy Associated with Long‐Term Use of Hydroxychloroquine in Patients with Rheumatic Diseases: A Systematic Review and Meta‐Analysis

Arthritis Care &Research, Accepted Article.
Objective We aimed to estimate the prevalence and cumulative incidence of hydroxychloroquine retinopathy (HCQ‐R) and its risk factors among long‐term HCQ users with rheumatic diseases through a systematic review and meta‐analysis of observational studies that used spectral‐domain OCT (SD‐OCT) for screening. Methods A systematic search of PubMed, Scopus,
Narsis Daftarian, Chloe Yue, Steve D Levasseur, Hui Xie, J. Antonio Avina‐Zubieta   +4 more
wiley   +1 more source

Characterization of dynamic stall of a wind turbine airfoil with a high Reynolds number [PDF]

Wind Energy Science
This study shows an extensive analysis of dynamic stall on wind turbine airfoils, preparing for the development of a reduced-order model applicable to thick airfoils (t/c>0.21) in the future.
H. R. Kim, J. A. Printezis, J. D. Ahrens, J. R. Seume, L. Wein   +4 more
doaj   +2 more sources

Comparison and Sensibility Analysis of Warning Parameters for Rotating Stall Detection in an Axial Compressor

International Journal of Turbomachinery, Propulsion and Power, 2020
The present paper aims at evaluating the surveillance parameters used for early stall warning in axial compressors, and is based on unsteady pressure measurements at the casing of a single stage axial compressor.
Gabriel Margalida, Pierric Joseph, Olivier Roussette, Antoine Dazin   +3 more
doaj   +1 more source

Mapping the Cerebral Organoid Landscape: A Systematic Review of Preclinical 3D Models in Neuroscience

Advanced Healthcare Materials, EarlyView.
Cerebral organoids are transforming brain research, yet the field remains fragmented. This comprehensive systematic review maps 738 studies published between 2014 and 2024 to uncover trends, gaps, and opportunities across neuroscience. Introducing OrganoidMap—an interactive, open‐access platform to explore and compare models—this work enables ...
Anna Wolfram, Vanessa Arnold, Maik Wolfram‐Schauerte, Anastassiya Moskalchuk, Caroline Trust, Marie Vontz, Mona Scheurenbrand, Vijayasarathy Sampath‐Kumar, Sogand Ahari, Carlos Romero‐Nieto, Lisa Sevenich   +10 more
wiley   +1 more source

Simulation of Broadband Noise Sources of an Axial Fan under Rotating Stall Conditions

Advances in Mechanical Engineering, 2014
Study on the influence of rotating stall on the aerodynamic noise of axial fan has important value to warn of the occurrence of stall through monitoring the noise variations.
Lei Zhang, Rui Wang, Songling Wang
doaj   +1 more source