Results 61 to 70 of about 24,380 (286)
Analysis of Geometries' Effects on Rotating Stall in Vaneless Diffuser with Wavelet Neural Networks
International Journal of Rotating Machinery, 2007 Wavelet neural network (WNN), which combines the capability of neural network in learning from process and that of wavelet decomposition, was used to study geometry factors on rotating stall in vaneless diffusers.
Chuang Gao +3 more
doaj +1 more source
Development and initial application of a blade design methodology for overspeed power-regulated tidal turbines [PDF]
, 2016 The range and variability of flow velocities in which horizontal axis tidal stream turbines operate introduces the requirement for a power regulation method in the system.
Doman, Darrel A. +5 more
core +1 more source
Deep Learning Methods for Assessing Time‐Variant Nonlinear Signatures in Clutter Echoes
Advanced Intelligent Systems, EarlyView.Motion classification from biosonar echoes in clutter presents a fundamental challenge: extracting structured information from stochastic interference. Deep learning successfully discriminates object speed and direction from bat‐inspired signals, achieving 97% accuracy with frequency‐modulated calls but only 48% with constant‐frequency tones. This work
Ibrahim Eshera +2 more
wiley +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
A Three-Dimensional Unsteady CFD Model of Compressor Stability [PDF]
, 2006 A three-dimensional unsteady CFD code called CSTALL has been developed and used to investigate compressor stability. The code solved the Euler equations through the entire annulus and all blade rows.
Chima, Rodrick V.
core +2 more sources
Australian Journal of Social Issues, EarlyView.ABSTRACT Migrant healthcare workers in Australia find themselves at the centre of three intersecting concerns, often presented as ‘crises’ in contemporary discourse: the ‘care crisis’, the ‘housing crisis’ and the ‘migration crisis.’ Yet their own perspectives on these issues are rarely foregrounded. This paper explores the role of homeownership in the
Leah Williams Veazey
wiley +1 more source
An assessment of body force representations for compressor stall simulation [PDF]
, 2010 Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2010.Cataloged from PDF version of thesis.Includes bibliographical references (p.
Kerner, Jonathan (Jonathan H.)
core
Journal of the Global Power and Propulsion Society, 2018 The flow structures in an axial compressor that lead to short-length scale stall inception are investigated using optical measurements in a high-speed one and a half stage compressor.
Christoph Brandstetter +1 more
doaj +1 more source
An Investigation of Stall Inception in Centrifugal Compressor Vaned Diffusers [PDF]
Volume 7: Turbomachinery, Parts A, B, and C, 2011 In compression systems the stable operating range is limited by rotating stall and/or surge. Two distinct types of stall precursors can be observed prior to full scale instability: the development of long-wavelength modal waves or a short-wavelength, three-dimensional flow breakdown (so-called “spike” stall inception).
Everitt, Jonathan Neil +1 more
openaire +2 more sources
An Examination of Dynamic Stall Vortex Inception on a Finite Wmg [PDF]
, 2000 In the present study, the behaviour of the vorticity flux on a wing of NACA 0015 cross section was analysed for ramp-up motion over a range of dimensionless pitch rates. The variations in the vorticity flux were examined as a means to identify the role
Ferrecchia, Antonella +2 more
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