... load to deep part load. Time-resolved pressure measurements were conducted at two sections on the draft tube wall along with high-speed videography and efficiency measurement to investigate the effect of the mitigation technique on the RVR characteristics and turbine performance. The recorded pressure...

... 07 07 2020 05 08 2020 prototype Kaplan turbine pressure measurement strain measurement Vortex rope Flexible and extended operations of hydraulic turbines increase along with the large penetration of electricity generated by intermittent renewable energy sources such as wind...

... field pressure measurements and high-speed videography. Parameters such as the primary bubble energy and the bubble mixture density (void fraction) are varied, and their effects studied. The experimental data is then compared to a simple compressible fluid medium model which accounts for the change...

... loads, it appears fundamental to accurately determine impact loads in order to be able to predict the erosion damage. cavitation confined flow flow measurement pressure measurement pressure sensors velocity measurement 11 05 2011 14 10 2011 19 12 2011 19 12 2011...

..., and this corresponds to a vortex cavitation bubble that is attached to the foil tip for the majority of the visualized images. The cavitation number is defined as 1 σ = P ∞ - P V 1 2 ρ U ∞ 2 where P ∞ is the reference pressure measured at the inlet of the test...

... number, symmetry of the swirl flow system, type of fuel injector and mode of fuel injection. A range of techniques, including High Speed Photography (HSP), Particle Image Velocimetry (PIV) and fluctuating pressure measurements were used to create flame maps, flame length detail, and relative pressure...

... blockage. 20 05 2011 16 08 2011 15 09 2011 15 09 2011 cavitation confined flow flow measurement pressure measurement velocity measurement ventilation Drag reduction and/or speed augmentation of marine vehicles by means of supercavitation is a topic of great interest...

...Jack E. Abboud; Wafaa S. Karaki; Ghanem F. Oweis The flow field past a biologically inspired cylindrical model with a cactus-shaped cross section is investigated in a wind tunnel using particle image velocimetry and surface pressure measurements at a biologically relevant Reynolds number of ∼ 2...

...-pressure measurement method by using the pressure taps and transmitting tubes was incapable of detecting the fluctuating surface pressure because the long extension tube and small sensing holes induced phase lag and smaller root-mean-square values of the pressure fluctuation. Therefore, only the time...

... flows flow visualisation food safety hydraulic systems hydrodynamics numerical analysis pressure measurement turbulence velocity measurement vortices conical diffuser singularity PIV POD turbulence models Transport circuits are mainly composed of various singularities...

... 2007 02 07 2008 04 09 2008 calibration flow measurement pressure measurement turbulence The pressure and velocity of incompressible flows can be measured in a plane using three-hole pressure (THP) probes. Typically, these probes have angular ranges around ± 30 deg...

...Barton L. Smith; Jack J. Stepan; Donald M. McEligot The results of flow experiments performed in a row of confined cylinders designed to mimic a model of a prismatic gas-cooled reactor lower plenum design are presented. Pressure measurements between the cylinders were made. Additionally, the flow...

... with the Galerkin projection of the Navier-Stokes equations onto the resulting spatial eigenfunctions. The experimental data consist of sets of 1000 simultaneous particle image velocimetry (PIV) images and surface pressure measurements taken in the Gas Dynamics and Turbulent Laboratory (GDTL) subsonic cavity flow...

... the near and intermediate field. The instantaneous pressure fluctuations in both jets were laterally asymmetric causing the fluctuating wall pressure to be poorly correlated across the jet centerline. A frequency-dependent proper orthogonal decomposition (POD) of the fluctuating pressure measurements...

... flow survey and numerical simulations. 2D laser Doppler velocimetry, 3D particle image velocimetry, and unsteady wall pressure measurements are performs to investigate thoroughly the velocity and pressure fields in the discharge ring and to give access to the vortex dynamics. Unsteady RANS simulation...

... irreversibilities in the recirculation was a decrease in the corresponding loss coefficient. 09 09 2005 07 05 2006 pressure measurement flow measurement pipe flow turbulent diffusion Tee junctions are frequently present in industrial systems and water distribution networks where...

..., the tip vortex trajectory is no longer straight but shows a kink in the passage. 27 04 2005 27 03 2006 vortices compressors aerospace engines flow measurement pressure measurement rotors blades axial compressor tip clearance stagger angle flow coefficient tip leakage flow...

... . Usually the measuring element is a capillary tube, capillary tube bundle, parallel plate bundle, or concentric annular duct (Fig. 1 ). flowmeters pipe flow laminar flow pressure measurement 06 05 2004 01 09 2005 2006 American Society of Mechanical Engineers ...

... flow vortices pattern formation pressure measurement flow measurement shock wave effects two-phase flow water tunnel pressure fluctuation experimental model slug flow In the context of the multiphase system, two-phase flow considered here, consists of a mixture of water existing...

... surfactants vortices drag reduction pipe flow pressure measurement velocity measurement viscoelasticity turbulence fluid oscillations swirling flow drag reduction surfactant solution vortex LDV It is well known that the addition of certain kinds of surfactants, as well as polymers...