Full metadata
Title
Multi-pulse PTV: evaluation on spatial resolution, velocity accuracy and acceleration measurement
Description
Multi-pulse particle tracking velocimetry (multi-pulse PTV) is a recently proposed flow measurement technique aiming to improve the performance of conventional PTV/ PIV. In this work, multi-pulse PTV is assessed based on PTV simulations in terms of spatial resolution, velocity measurement accuracy and the capability of acceleration measurement. The errors of locating particles, velocity measurement and acceleration measurement are analytically calculated and compared among quadruple-pulse, triple-pulse and dual-pulse PTV. The optimizations of triple-pulse and quadruple-pulse PTV are discussed, and criteria are developed to minimize the combined error in position, velocity and acceleration. Experimentally, the velocity and acceleration fields of a round impinging air jet are measured to test the triple-pulse technique. A high speed beam-splitting camera and a custom 8-pulsed laser system are utilized to achieve good timing flexibility and temporal resolution. A new method to correct the registration error between CCDs is also presented. Consequently, the velocity field shows good consistency between triple-pulse and dual-pulse measurements. The mean acceleration profile along the centerline of the jet is used as the ground truth for the verification of the triple-pulse PIV measurements of the acceleration fields. The instantaneous acceleration field of the jet is directly measured by triple-pulse PIV and presented. Accelerations up to 1,000 g's are measured in these experiments.
Date Created
2014
Contributors
- Ding, Liuyang (Author)
- Adrian, Ronald J. (Thesis advisor)
- Herrmann, Marcus (Committee member)
- Huang, Huei-Ping (Committee member)
- Arizona State University (Publisher)
Topical Subject
Resource Type
Extent
ix, 90 p. : ill. (chiefly col.)
Language
eng
Copyright Statement
In Copyright
Primary Member of
Peer-reviewed
No
Open Access
No
Handle
https://hdl.handle.net/2286/R.I.25132
Statement of Responsibility
by Liuyang Ding
Description Source
Viewed on Aug. 27, 2014
Level of coding
full
Note
thesis
Partial requirement for: M.S., Arizona State University, 2014
bibliography
Includes bibliographical references (p. 76-77)
Field of study: Mechanical engineering
System Created
- 2014-06-09 02:19:08
System Modified
- 2021-08-30 01:33:59
- 3 years 2 months ago
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