Optical flow tracking velocimetry of near-field explosions

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.

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Official URL: http://dx.doi.org/10.1088/1361-6501/ac4599

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
Divisions:	Faculty of Science and Engineering > School of Environmental Sciences
Depositing User:	Symplectic Admin
Date Deposited:	11 Feb 2022 08:35
Last Modified:	18 Jan 2023 21:12
DOI:	10.1088/1361-6501/ac4599
Open Access URL:	https://iopscience.iop.org/article/10.1088/1361-65...
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3148713