Results 21 to 30 of about 154,658 (263)
Spectral proper orthogonal decomposition of compressor tip leakage flow [PDF]
Physics of Fluids, 2021 To identify the spatiotemporal coherent structure of compressor tip leakage flow, spectral proper orthogonal decomposition (SPOD) is performed on the near-tip flow field and the blade surface pressure of a low-speed compressor rotor. The data used for the SPOD analysis are obtained by delayed-detached eddy simulation, which is validated against the ...
Xiao He +3 more
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Flow leakage and Kelvin–Helmholtz instability of turbulent flow over porous media
Physics of Fluids, 2022 In the present paper, turbulent flow in a composite porous–fluid system, including a permeable surface-mounted bluff body immersed in a turbulent channel flow, is investigated using pore-scale large eddy simulation. The effect of Reynolds number (Re) on the flow leakage from porous to non-porous regions, Kelvin–Helmholtz (K–H) instabilities, as well as
Mohammad Jadidi +3 more
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A Review of Tip Clearance in Propeller, Pump and Turbine
Energies, 2018 Propellers, pumps, and turbines are widely applied in marine equipment, water systems, and hydropower stations. With the increasing demand for energy conservation and environmental protection, the high efficiency and the stable operation of pumps and ...
Yabin Liu, Lei Tan, Binbin Wang
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Aeroacoustic Investigation of a Single Airfoil Tip Leakage Flow [PDF]
International Journal of Aeroacoustics, 2010 Combined near and far field aeroacoustic measurements have been carried out during an original laboratory scale low Mach number (0–0.3) experiment about the tip leakage flow past a single non-rotating airfoil. Such measurements were made possible by the use of a single airfoil located in the potential core of an open jet flow in the anechoic wind ...
Jacob, Marc C. +3 more
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Flow-sensitive Leakage Analysis in Mobile Ambients
Electronic Notes in Theoretical Computer Science, 2005 AbstractIn this paper, we present a refinement of a Control Flow Analysis aimed at studying information flow security in the the calculus of Mobile Ambients. The improvements are achieved by making the analysis be flow-sensitive: the analysis is able to keep track of temporal dependencies of capabilities application when computing a safe approximation ...
C. BRAGHIN, CORTESI, Agostino
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Tribology Online, 2007 This paper presents a general theoretical approach to evaluate the leakage flow, stiffness and damping of annular seals in turbulent flow regime including fluid inertia using turbulent lubrication theory.
Satyam Shivam Gautam, Mihir Kumar Ghosh
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Effect of internal leakage on torque converter characteristics
Advances in Mechanical Engineering, 2020 To understand the effect of internal leakage on the torque field and characteristics of a torque converter (TC), a transient analysis was performed on the internal flow of a TC and the pressure pulsation characteristics of monitoring points in the ...
Xiong Pan +4 more
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Shock Formation in Overexpanded Tip Leakage Flow [PDF]
Volume 1: Turbomachinery, 1992 Shock formation due to overexpansion of supersonic flow at the inlet to the tip clearance gap of a turbomachine has been studied. The flow was modelled on a water table using a sharp-edged rectangular channel. The flow exhibited an oblique hydraulic jump starting on the channel sidewall near the channel entrance.
J. Moore, K. M. Elward
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Tribology Online, 2007 This paper is in continuation of its part I. It presents the rotordynamic behavior of a circular seal and multilobe seal for various L/D ratio, taper ratio and eccentricity ratio in the turbulent flow regime considering the effect of fluid inertia.
Satyam Shivam Gautam, Mihir Kumar Ghosh
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Elektrika, 2020 The purpose of this research is to design and realize a pipe leak detection system that can be monitored with an Android application. Water flow sensor is used to determine the flow of water, with water flow rate analysis it is possible to know the ...
Ardi DwI Prasetya +2 more
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