Higham, JE ORCID: 0000-0001-7577-0913, Isaac, OS and Rigby, SE
(2022)
Optical flow tracking velocimetry of near-field explosions.
Measurement Science and Technology, 33 (4).
047001-047001.
ISSN 0957-0233, 1361-6501
Abstract
<jats:title>Abstract</jats:title> <jats:p>To better understand the complex dynamics and physics associated with the rapid expansion of the detonation product fireball following an explosion, it is imperative to have a full description of its associated velocity field. Typical experimental techniques rely on simple single-point measurements captured from pressure transducers or Hopkinson pressure bars. In this technical design note, we aim to improve the current state-of-the-art by introducing a means to determine full velocity fields from high-speed video using optical flow tracking velocimetry. We demonstrate the significance of this method from our results by comparing velocity fields derived from high-speed video and a validated numerical model of the same case. A wider use of this technique will allow researchers to elucidate spatial and temporal features of explosive detonations, which could not be obtained thus far using single-point measurements.</jats:p>
Item Type: | Article |
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Uncontrolled Keywords: | 4012 Fluid Mechanics and Thermal Engineering, 40 Engineering |
Divisions: | Faculty of Science and Engineering > School of Environmental Sciences |
Depositing User: | Symplectic Admin |
Date Deposited: | 11 Feb 2022 08:35 |
Last Modified: | 07 Dec 2024 22:14 |
DOI: | 10.1088/1361-6501/ac4599 |
Open Access URL: | https://iopscience.iop.org/article/10.1088/1361-65... |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3148713 |