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.

Access the full-text of this item by clicking on the Open Access link.


<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:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3148713