PIV Measurements in Pumps

reportActive / Technical Report | Accession Number: ADA476524 | Open PDF

Abstract:

Digital Particle Imaging Velocimetry DPIV is a powerful nonintrusive measuring technique that has become popular in the last decade with the availability of commercial systems. In contrast to Particle Image Velocimetry PIV, which utilizes analogue imaging and therefore time-consuming post processing, for DPIV digital video recording is encountered which is ideally suited for digital data processing. This offers the advantage of near real-time velocity measurements and therefore eases application. The ability to measure instantaneous planar velocity fields makes it attractive for investigations of complex flow fields encountered in pumps. While standard systems allow measurement of two velocity components, stereo DPIV will deliver all three components in the measuring plane. This paper gives an overview on the basic principles of DPIV and the main components of standard systems. Special effort is made to report on the particularities of measurements in stationary as well as rotating components of pumps. The main topics of this report are a Principles of DPIV b Light sources, seeding and tracer particles, digital image recording c Data processing Practical hints d Optical access e Refraction adaptation f PIV-LIF and d Examples of DPIV measurements in pumps.

Author(s):
Wulff, Detlev L.
Author Organization(s):
TECHNICAL UNIV BRAUNSCHWEIG (GERMANY) INST OF FLUID MECHANICS
Descriptive Note:
Research paper
Supplementary Note:
Presented during the AVT-143 RTO AVT/VKI Lecture Series held at the von Karman Institute, Rhode St. Genese, Belgium, 20-23 March 2006. Published in Design and Analysis of High Speed Pumps, Educational Notes RTO-EN-AVT-143, Paper 5. ISBN 92-837-0063-5 and ISBN 978-92-837-0063-0. See also ADM002051. The original document contains color images.
Pagination:
0037

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Nato
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited. Nato.

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
NATO/RTO
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_1.2.7_Experimentation
Modernization Areas:
Directed Energy
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*PUMPS, *LASER VELOCIMETERS, *PARTICLE IMAGE VELOCIMETRY, *DIGITAL IMAGES, YAG LASERS, DATA PROCESSING, GERMANY, INSTRUMENTATION, REFRACTION
Field(s)/Group(s):
Pumps, Filters, Pipes, Tubing, Fittings and Valves, Test Facilities, Equipment and Methods, Fluid Mechanics
Keyword(s):
FOREIGN REPORTS, NATO FURNISHED, DPIV(DIGITAL PARTICLE IMAGING VELOCIMETRY), OPTICAL ACCESS, SEEDED FLOW FIELDS
Report Date:
2006 Nov 01
Creation Date:
2008 Feb 20