Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/130598
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Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Han, S. | - |
dc.contributor.author | Sun, Z. | - |
dc.contributor.author | Tian, Z.F. | - |
dc.contributor.author | Lau, T. | - |
dc.contributor.author | Nathan, G. | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Optics Express, 2021; 29(7):10923-10938 | - |
dc.identifier.issn | 1094-4087 | - |
dc.identifier.issn | 1094-4087 | - |
dc.identifier.uri | http://hdl.handle.net/2440/130598 | - |
dc.description.abstract | We report an optical method for particle velocity measurement that is suitable for the measurement of particle velocities within dense particle-laden flows with high spatial resolution. The technique is based on particle shadow velocimetry with the use of a long-distance microscopic lens for images collection. The narrow depth of field of the lens allows particles within the focal plane to have much higher pattern intensities than those outside it on the collected images. Data processing was then employed to remove particles from outside the focal plane based on the gradient of the signal and a threshold. Following this, particle velocity was calculated from two successive images in the usual way. The technique was successfully demonstrated in a free-falling particle curtain with volume fractions in the four-way coupling regime of near-spherical micro-particles falling under gravity. The method was successfully employed to measure the transverse velocity profile through the curtain, which is the first time that such a measurement has been performed. Other highly-fidelity experimental data, which is also well suited to model development and validation, include the particle mass flow rate, curtain thickness and opacity. | - |
dc.description.statementofresponsibility | Shipu Han, Zhiwei Sun, Zhao Feng Tian, Timothy Lau and Graham Nathan | - |
dc.language.iso | en | - |
dc.publisher | The Optical Society | - |
dc.rights | © 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement | - |
dc.source.uri | http://dx.doi.org/10.1364/oe.421017 | - |
dc.title | Particle velocity measurement within a free-falling particle curtain using microscopic shadow velocimetry | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1364/oe.421017 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/DP180102045 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Han, S. [0000-0002-7854-5882] | - |
dc.identifier.orcid | Sun, Z. [0000-0001-7899-9676] | - |
dc.identifier.orcid | Tian, Z.F. [0000-0001-9847-6004] | - |
dc.identifier.orcid | Lau, T. [0000-0003-1851-706X] | - |
dc.identifier.orcid | Nathan, G. [0000-0002-6922-848X] | - |
Appears in Collections: | Aurora harvest 8 Physics publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_130598.pdf | Published version | 4.93 MB | Adobe PDF | View/Open |
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