Results 111 to 120 of about 32,232 (297)
A Model for Predicting Post-Stall Behavior of Axial Compressors
Journal of Applied Fluid Mechanics, 2021 The current paper reports on a new theory developed by modifying the basic Moore-Greitzer model, which can predict the performance of a compression system during the instabilities in more details.
M. Shahriyari, H. Khaleghi, M. Heinrich
doaj
Subsynchronous vibrations in a high pressure centrifugal compressor: A case history [PDF]
Two distinct aerodynamically excited vibrations in a high pressure low flow centrifugal compressor are documented. A measured vibration near 21% of running speed was identified as a nonresonant forced vibration which results from rotating stall in the ...
Evans, B. F., Smalley, A. J.
core +1 more source
Variable‐Rate Texture Compression: Real‐Time Rendering with JPEG
Computer Graphics Forum, EarlyView.Abstract Although variable‐rate compressed image formats such as JPEG are widely used to efficiently encode images, they have not found their way into real‐time rendering due to special requirements such as random access to individual texels. In this paper, we investigate the feasibility of variable‐rate texture compression on modern GPUs using the ...
Elias Kristmann +2 more
wiley +1 more source
Determination of compressor in-stall characteristics from engine surge transients [PDF]
A technique for extracting the in-stall pumping characteristics for an axial flow compressor operating in an engine system environment is developed. The technique utilizes a Hybrid computer simulation of the compressor momentum equation into which actual
Chiaramonte, F. P. +2 more
core +1 more source
Towards the tumble resistant microlight [PDF]
, 2006 The tumble mode is a pitching departure from controlled flight which leads to a pitch autorotation that is generally unrecoverable – resulting in vertical ground impact, usually preceded by in-flight breakup (the mechanism for which, surprisingly, can ...
Gratton, GB, Newman, S
core
‘Escaping Isn't for Everyone’: Kurdish Smugglers’ Navigational Tactics at Checkpoints in Iran
Development and Change, EarlyView.ABSTRACT This article examines how Kurdish smugglers navigate state and insurgent checkpoints in the borderlands of western Iran. Drawing on ethnographic research, it analyses two key navigational tactics: persin, a form of negotiated passage involving transaction, recognition and the contingent toleration of authority; and jimi, rendered here as ...
Peyman Zinati
wiley +1 more source
International Journal of Rotating Machinery, 2015 The present paper is an attempt in understanding the stall inception mechanism in a low speed, contra rotating axial flow fan stage, using wavelet transforms.
Tegegn Dejene Toge, A. M. Pradeep
doaj +1 more source
Experimental evaluation of a TF30-P-3 turbofan engine in an altitude facility: Effect of steady-state temperature distortion [PDF]
The effects of circumferential distortion of the total temperature entering 25, 50, and 75 percent of the inlet circumferential annulus of a turbofan engine were determined.
Braithwaite, W. M.
core +1 more source
The Economic History Review, EarlyView.Abstract Housework is central to feminist calls for recognition of women's work, economic histories explaining the sexual division of labour, and claims regarding the progressive role of scientific knowledge. Yet little is known about the time it actually took. We address this lacuna.
Sara Horrell, Jane Humphries
wiley +1 more source
Can a lizard ride on a housefly?: Navigating uncertainty and moral life in an Accra Zongo, Ghana
Ethos, EarlyView.Abstract How can uncertainty become a resource for ethical life rather than a threat to it? Focusing on a Zongo community in Accra, Ghana—also known as a “traveler's camp” or “stranger's quarters”—this article examines how people use a creative form of communication called the practice of folding to sustain relationships shaped by conditions of ...
Emily A. Williamson
wiley +1 more source