Results 61 to 70 of about 13,402 (209)
Effects of Tip Cavity Depth, Width, and Location on the Leakage Flow in an Axial Turbine Cascade
Journal of Fluid Science and Technology, 2010 In this study, effects of the tip cavity with various depths, widths, and locations on the leakage flow and performance of an axial turbine cascade have been investigated numerically.
Mohamed EL-GHANDOUR +3 more
doaj +1 more source
Influence of blade tip rounding on tip leakage vortex cavitation of axial flow pump
IOP Conference Series: Materials Science and Engineering, 2013 Tip leakage flow in axial flow pumps is mainly caused by the tip clearance, which is the main cause of tip leakage vortex cavitation and blade tip cavitation erosion. In order to improve tip clearance flow and reduce TLV cavitation, four schemes were adopted to the round blade tip.
S Q Wu +4 more
openaire +1 more source
Origins and Structure of Spike-Type Rotating Stall [PDF]
, 2018 In this paper we describe the structures that produce a spiketype route to rotating stall and explain the physical mechanism for their formation. The descriptions and explanations are based on numerical simulations, complemented and corroborated by ...
Day, I. J. +4 more
core +1 more source
Heat transfer in the tip region of a rotor blade simulator [PDF]
The measurement of mass transfer from cavities is discussed with emphasis on the effect of cavity orientations relative to the main flow direction. A finite difference computation for turbulent air flow and heat transfer over a two-dimensional shrouded ...
Chyu, M. K., Metzger, D. E.
core +4 more sources
Journal of Fluid Science and Technology, 2017 A large-scale perpendicular cavitating vortices (PCVs), at the trailing edge of attached cavitation on the blade suction side near the tip region, has been found recently due to the great impact on performance breakdown in an axial waterjet pump. However,
Lei SHI +4 more
doaj +1 more source
Investigation of Turbulent Tip Leakage Vortex in an Axial Water Jet Pump with Large Eddy Simulation [PDF]
Detailed steady and unsteady numerical studies were performed to investigate tip clearance flow in an axial water jet pump. The primary objective is to understand physics of unsteady tip clearance flow, unsteady tip leakage vortex, and cavitation ...
Hah, Chunill, Katz, Joseph
core +1 more source
The Vector-APP: a Broadband Apodizing Phase Plate that yields Complementary PSFs
, 2012 The apodizing phase plate (APP) is a solid-state pupil optic that clears out a D-shaped area next to the core of the ensuing PSF. To make the APP more efficient for high-contrast imaging, its bandwidth should be as large as possible, and the location of ...
Codona, Johanan +6 more
core +1 more source
Energies, 2019 Though the proper orthogonal decomposition (POD) method has been widely adopted in flow analysis, few publications have systematically studied the influence of different POD processing methods on the POD results.
Lei Shi, Hongwei Ma, Lixiang Wang
doaj +1 more source
Experimental Investigation of the Transient Flow in Roots Blower [PDF]
, 2018 Rotary positive displacement machines are common method to pump flow in various process industries. Their performance highly depends on the operational clearances.
Bruecker, C. +6 more
core +1 more source
, 2014 High throughput, low inner working angle (IWA) phase masks coronagraphs are essential to directly image and characterize (via spectroscopy) earth-like planets.
Baudoz, Pierre +7 more
core +2 more sources