NDLI: Measurements of the tip leakage vortex structures and turbulence in the meridional plane of an axial water-jet pump

Content Provider	Springer Nature Link
Author	Wu, Huixuan Miorini, Rinaldo L. Katz, Joseph
Copyright Year	2010
Abstract	Particle image velocimetry (PIV) measurements at varying resolutions focus on the flow structures in the tip region of a water-jet pump rotor, including the tip-clearance flow and the rollup process of a tip leakage vortex (TLV). Unobstructed views of these regions are facilitated by matching the optical refractive index of the transparent pump with that of the fluid. High-magnification data reveal the flow non-uniformities and associated turbulence within the tip gap. Instantaneous data and statistics of spatial distributions and strength of vortices in the rotor passage reveal that the leakage flow emerges as a wall jet with a shear layer containing a train of vortex filaments extending from the tip of the blade. These vortices are entrained into the TLV, but do not have time to merge. TLV breakdown in the aft part of the blade passage further fragments these structures, increasing their number and reducing their size. Analogy is made between the circumferential development of the TLV in the blade passage and that of the starting jet vortex ring rollup. Subject to several assumptions, these flows display similar trends, including conditions for TLV separation from the shear layer feeding vorticity into it.
Starting Page	989
Ending Page	1003
Page Count	15
File Format	PDF
ISSN	07234864
Journal	Experiments in Fluids
Volume Number	50
Issue Number	4
e-ISSN	14321114
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-09-24
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Engineering Thermodynamics, Heat and Mass Transfer Engineering Fluid Dynamics Fluid- and Aerodynamics
Content Type	Text
Resource Type	Article
Subject	Fluid Flow and Transfer Processes Physics and Astronomy Mechanics of Materials Computational Mechanics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Three-dimensional flow structures and associated turbulence in the tip region of a waterjet pump rotor blade

Blade tip vortex measurements on actively twisted rotor blades

Mind the gap: a new insight into the tip leakage vortex using stereo-PIV

Effect of tip vortex aperiodicity on measurement uncertainty

Axial plus tangential entry swirling jet

Quad-plane stereoscopic PIV for fine-scale structure measurements in turbulence

Polymer-induced turbulence modifications in an impinging jet

3D-PTV measurements in a plane Couette flow

Propeller tip and hub vortex dynamics in the interaction with a rudder

Measurements of the tip leakage vortex structures and turbulence in the meridional plane of an axial water-jet pump

Similar Documents

Three-dimensional flow structures and associated turbulence in the tip region of a waterjet pump rotor blade

Blade tip vortex measurements on actively twisted rotor blades

Mind the gap: a new insight into the tip leakage vortex using stereo-PIV

Effect of tip vortex aperiodicity on measurement uncertainty

Axial plus tangential entry swirling jet

Quad-plane stereoscopic PIV for fine-scale structure measurements in turbulence

Polymer-induced turbulence modifications in an impinging jet

3D-PTV measurements in a plane Couette flow

Propeller tip and hub vortex dynamics in the interaction with a rudder

Measurements of the tip leakage vortex structures and turbulence in the meridional plane of an axial water-jet pump