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Depth from defocus technique applied to unsteady shock-drop secondary atomization

Sharma, S and Rao, SJ and Chandra, NK and Kumar, A and Basu, S and Tropea, C (2023) Depth from defocus technique applied to unsteady shock-drop secondary atomization. In: Experiments in Fluids, 64 (4).

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Official URL: https://doi.org/10.1007/s00348-023-03588-w


The two-sensor depth from defocus technique for the measurement of drop sizes in a spray is further developed to achieve higher spatial and temporal resolution, to improve estimates of spatial size distribution and number concentration, and to provide additional guidelines for the calibration and design of the optical system for a specific application. The technique and these improvements are demonstrated using the case of secondary atomization when a shock wave interacts with a single drop. This is an application in which both high spatially and temporally resolved number density and size distributions of secondary droplets generated in the wake of the original drop are necessary. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Item Type: Journal Article
Publication: Experiments in Fluids
Publisher: Springer Science and Business Media Deutschland GmbH
Additional Information: The copyright for this article belongs to the Authors.
Keywords: Atomization; Drops; Optical systems; Size distribution, Depth-from-defocus; Drop size; High spatial resolution; High temporal resolution; Measurements of; Number concentration; Secondary atomization; Spatial and temporal resolutions; Spatial size distribution; Unsteady shocks, Shock waves
Department/Centre: Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research
Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 21 Apr 2023 09:41
Last Modified: 21 Apr 2023 09:41
URI: https://eprints.iisc.ac.in/id/eprint/81319

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