Results 41 to 50 of about 474,823 (307)
One-dimensional leakage-flow vibration instabilities [PDF]
Journal of Fluids and Structures, 1988 Simple boundary conditions, pressure losses, and channel geometries necessary for the unstable, rigid-body translational vibrations of the wall of a one-dimensional leakage-flow channel are identified. General expressions for the flow-damping and stiffness forces acting on the vibrating channel wall are derived and specific results are given for ...
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Engineering Applications of Computational Fluid Mechanics, 2018 Abrasive wear in the clearance gap of guide vanes (GVs) increases the gap size, which deteriorates the flow and causes loss of efficiency. This paper investigates the performance of a Francis turbine including erosion-induced clearance gaps on the GVs ...
Sailesh Chitrakar +2 more
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Experimental study of endwall flow in a low-speed linear compressor cascade: effect of over-tip leakage [PDF]
, 2017 This paper describes the study of endwall flow modification due to over-tip leakage flow in axial compressor blades. Un-shrouded axial compressor stator and rotor blades in aero-engines and land based gas turbines are subjected to over-tip leakage flow ...
Kanjirakkad, Vasudevan
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Tip Leakage Flow in Linear Compressor Cascade [PDF]
Journal of Turbomachinery, 1993 Tip leakage flow in a linear compressor cascade of NACA 65-1810 profiles is investigated, for tip clearance levels of 1.0, 2.0, and 3.25 percent of chord at design and off-design flow conditions. Velocity and pressure data are collected from three transverse sections inside tip clearance and sixteen sections within flow passage.
S. Kang, C. Hirsch
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发电技术ObjectivesIn order to obtain the refined leakage flow of brush seal and reveal its sealing mechanism, the mathematical model of the leakage flow characteristics of brush seals based on the bristle pack staggered tube bundle model was established ...
SONG Pengfei +4 more
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Unsteady Structure of Compressor Tip Leakage Flows
Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, 2022 Abstract Direct numerical simulations (DNS) are performed of a cantilevered stator blade to identify the unsteady and turbulent flow structure within compressor tip flows. The simulations were performed with clearances of 1.6 and 3.2 percent of chord.
Maynard, Joshua M +3 more
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Transient Study of Flow and Cavitation Inside a Bileaflet Mechanical Heart Valve
Applied Sciences, 2020 A mechanical heart valve (MHV) is an effective device to cure heart disease, which has the advantage of long life and high reliability. Due to the hemodynamic characteristics of blood, mechanical heart valves can lead to potential complications such as ...
Wen-qing Li +3 more
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You-qi chuyun, 2021 For the problem that the conventional oil pipeline detection system cannot effectively detect the leakage of the two-phase flow pipelines, a leakage identification method based on the acoustic emission signal was proposed for the gasliquid two-phase flow
Zhanghang XU +4 more
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The Influence of Swirl Brakes on the Rotordynamic Forces Generated by Discharge-to-Suction Leakage Flows in Centrifugal Pumps [PDF]
, 1993 Increasing interest has been give to swirl brakes as a means of reducing destabilizing rotordynamic forces due to leakage flows in new high speed rocket turbopumps.
Acosta, Allan J. +3 more
core
Mechanisms of parasite‐mediated disruption of brain vessels
FEBS Letters, EarlyView.Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira +3 more
wiley +1 more source