Results 41 to 50 of about 24,432 (206)
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 +3 more
doaj +1 more source
Adaptive Latency Insensitive Protocols [PDF]
, 2007 Latency-insensitive design copes with excessive delays typical of global wires in current and future IC technologies. It achieves its goal via encapsulation of synchronous logic blocks in wrappers that communicate through a latency-insensitive protocol ...
Casu, Mario Roberto, Macchiarulo, Luca
core +1 more source
A Unified Framework for Compressor Stall Inception
Volume 10: Turbomachinery — Axial Flow Fan & Compressor Aerodynamics; Axial Flow Turbine AerodynamicsAbstract This paper presents a first-of-a-kind description of compressor rotating stall inception that explains the two different routes to stall reported in the literature over the past four decades. A low-order dynamic system model, an actuator disk analysis, is shown to capture these two transient, stall inception behaviors, namely
Grimshaw, Samuel +3 more
openaire +2 more sources
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
Description of the unsteady flow pattern from peak efficiency to near surge in subsonic centrifugal compressor stage [PDF]
, 2013 This paper aims to describe the flow structure modifications when the operating point moves from peak efficiency to near stall condition in a moderate pressure ratio centrifugal compressor stage consisted of a splittered unshrouded impeller and a vaned ...
Bousquet, Yannick +4 more
core
Control of rotorcraft retreating blade stall using air-jet vortex generators [PDF]
, 2006 A series of low-speed wind tunnel tests were carried out on an oscillating airfoil fitted with two rows of air-jet vortex generators (AJVGs). The airfoil used had an RAE 9645 section and the two spanwise arrays of AJVGs were located at x/c=0.12 and 0.62.
Akanni S. D. +22 more
core +1 more source
Characterization of dynamic stall of a wind turbine airfoil with a high Reynolds number [PDF]
Wind Energy ScienceThis 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 +4 more
doaj +2 more sources
Stall and leading-edge vortex in a centrifugal compressor with vaned diffuser
Nihon Kikai Gakkai ronbunshu, 2015 The experimental and CFD analysis were conducted to investigate the relationship between stall and leading-edge vortex (LEV) in a centrifugal compressor with vaned diffuser.
Nobumichi FUJISAWA +2 more
doaj +1 more source
Rotating Stall Inception Prediction Using an Eigenvalue-Based Global Instability Analysis Method
International Journal of Turbomachinery, Propulsion and PowerThe accurate prediction of rotating stall inception is critical for determining the stable operating regime of a compressor. Among the two widely accepted pathways to stall, namely, modal and spike, the former is plausibly believed to originate from a ...
Shenren Xu +7 more
doaj +1 more source
International Journal of Rotating Machinery, 2017 This work investigates high-frequency measurements for the contribution to the understanding of different stall inception types in high-speed multistage compressors.
Johannes Schreiber +2 more
doaj +1 more source