Optical flow tracking velocimetry of near-field explosions

Higham, J E and Isaac, O S and Rigby, S E (2022) Optical flow tracking velocimetry of near-field explosions. Measurement Science and Technology, 33 (4). 047001. ISSN 0957-0233

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Abstract

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.

Item Type: Article
Subjects: STM Open Press > Computer Science
Depositing User: Unnamed user with email support@stmopenpress.com
Date Deposited: 21 Jun 2023 05:36
Last Modified: 13 Sep 2024 07:22
URI: http://journal.submissionpages.com/id/eprint/1596

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