Results 21 to 30 of about 474,823 (307)
The Effect of Inlet Swirl on the Rotordynamic Shroud Forces in a Centrifugal Pump [PDF]
, 1992 The role played by fluid forces in determining the rotordynamic stability of a centrifugal pump is gaining increasing attention. The present research investigates the contributions to the rotordynamic forces from the discharge-to-suction leakage flows ...
Acosta, A. J. +3 more
core +2 more sources
Tip Leakage Flow in Axial Compressors [PDF]
Journal of Turbomachinery, 1990 Experimental measurements in a linear cascade with tip clearance are complemented by numerical solutions of the three-dimensional Navier–Stokes equations in an investigation of tip leakage flow. Measurements reveal that the clearance flow, which separates near the entry of the tip gap, remains unattached for the majority of the blade chord when the tip
J. A. Storer, N. A. Cumpsty
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Saturated-Unsaturated flow in a Compressible Leaky-unconfined Aquifer [PDF]
, 2012 An analytical solution is developed for three-dimensional flow towards a partially penetrating large-diameter well in an unconfined aquifer bounded below by an aquitard of finite or semi-infinite extent.
Kuhlman, Kristopher L. +2 more
core +4 more sources
Rotordynamic Forces from Discharge-to-Suction Leakage Flows in Centrifugal Pumps: Effects of Geometry [PDF]
, 1997 The rotordynamic forces generated by the fluid flow through the impeller leakage path of a centrifugal pump are now well established. The present paper examines the effects of modifying the leakage path geometry by changing the front shroud, from a ...
Bircumshaw, Brian L. +2 more
core +2 more sources
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
openaire +3 more sources
Leakage flow simulation in a specific pump model [PDF]
, 2014 This paper deals with the influence of leakage flow existing in SHF pump model on the analysis of internal flow behaviour inside the vane diffuser of the pump model performance using both experiments and calculations. PIV measurements have been performed
BAYEUL-LAINE, Annie-Claude +5 more
core +6 more sources
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
openaire +2 more sources
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
doaj +1 more source
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
openaire +6 more sources
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
openaire +2 more sources