Effect of Swirl on Rotordynamic Forces Caused by Front Shroud Pump Leakage [PDF]
, 2002 Unsteady forces generated by fluid flow through the impeller shroud leakage path of a centrifugal pump were investigated. The effect of leakage path inlet swirl (pump discharge swirl) on the rotordynamic forces was re-examined.
Brennen, Christopher E., Hsu, Yun
core +1 more source
Effect of pre-swirl on gas–liquid two-phase flow characteristics in a helical axial-flow pump [PDF]
AIP AdvancesIn helical axial-flow pumps for gas–liquid multiphase transport, unsteady flow induced by the interaction between the trailing edge of the guide vanes and the impeller inlet often deteriorates the hydraulic performance.
Wei Han +7 more
doaj +1 more source
A deformable microswimmer in a swirl: capturing and scattering dynamics [PDF]
, 2014 Inspired by the classical Kepler and Rutherford problem, we investigate an analogous set-up in the context of active microswimmers: the behavior of a deformable microswimmer in a swirl flow. First we identify new steady bound states in the swirl flow and
Löwen, Hartmut +2 more
core +2 more sources
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
Direct numerical simulation of the near-field dynamics of annular gas-liquid two-phase jets [PDF]
, 2009 Copyright © 2009 American Institute of Physics.Direct numerical simulation has been used to examine the near-field dynamics of annular gas-liquid two-phase jets. Based on an Eulerian approach with mixed fluid treatment, combined with an adapted volume of
Adzic M. +8 more
core +1 more source
Parametric Study of High-Efficiency and Low-Emission Gas Burners
Advances in Materials Science and Engineering, 2013 The objective of this study is to investigate the influence of three significant parameters, namely, swirl flow, loading height, and semi-confined combustion flame, on thermal efficiency and CO emissions of a swirl flow gas burner.
Shuhn-Shyurng Hou, Ching-Hung Chou
doaj +1 more source
Experimental study of hydrodynamic performances of pre-swirl pumpjet propeller
Xibei Gongye Daxue Xuebao, 2023 A pre-swirl pumpjet propeller(PJP) is widely used in the new generation of quiet submarines all over the world, although the experimental study of its hydrodynamic performances is still rare. This paper carries out experimental tests of the pre-swirl PJP
QIN Denghui +4 more
doaj +1 more source
Passive flow control study in a convoluted intake using Stereo Particle Image Velocimetry [PDF]
, 2016 The ability of vortex generators (VG) to reduce the unsteady distortion at the exit plane of an S-duct (AIP) is investigated. The 3 components of the velocity at the AIP were measured using a Stereo Particle Velocimetry system with high spatial ...
Garnier, Eric +4 more
core +1 more source
Turbulent Von Kármán Swirling Flows [PDF]
, 2007 We investigate the turbulent Von Karman flow generated by two counterrotating flat or bladed disks. Numerical predictions based on a Reynolds Stress Model (RSM) are compared to velocity measurements performed at CEA [2]. This flow is of practical importance in many industrial devices such as in gas-turbine aeroengines.
Poncet, Sébastien +2 more
openaire +2 more sources
Effect of swirl on fluctuation of pressure drop in a gas–liquid slug flow
Measurement: Sensors, 2020 Slug flow as one of the typical two-phase flow patterns occurs widely in industry. The fluctuating phenomenon in slug flow is harmful to the pipeline system and should be suppressed.
Wen Liu, Xiaofei Lv, Zhongchuang Zhao
doaj +1 more source