Results 31 to 40 of about 154,658 (263)
Desensitization of Tip Clearance Effects in Axial Flow Turbines
Journal of Fluid Science and Technology, 2010 The present study aims to control the leakage flow and total pressure loss in high pressure turbines. A new tip shape is proposed. It is based on the triple squealer shape by adopting a new middle squealer, along the camber line, whose first and last ...
Mohamed EL-GHANDOUR +2 more
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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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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 ...
openaire +1 more source
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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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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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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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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FEBS Letters, EarlyView.This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva +5 more
wiley +1 more source
FEBS Letters, EarlyView.In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai +9 more
wiley +1 more source