- Title
- Collision behaviour of a small spherical particle on a large stationary droplet
- Creator
- Mitra, Subhasish; Doroodchi, Elham; Pareek, Vishnu; Joshi, Jyeshtharaj B.; Evans, Geoffrey M.
- Relation
- Chemeca 2013 : Challenging Tomorrow. Proceedings of Chemeca 2013: Challenging Tomorrow (Brisbane, Qld 29 September - 2 October, 2013)
- Relation
- ARC
- Relation
- https://www.icheme.org/events/events/2013/chemeca%202013.aspx#.WAb66UYRpjZ
- Publisher
- Engineers Australia
- Resource Type
- conference paper
- Date
- 2013
- Description
- In the present work, collision behaviour of a solid particle on an unconfined gas-liquid interface e.g. droplet was studied at low Weber number range. A glass ballotini particle (1.17 mm) was impacted on a stationary water droplet (3.15 mm) at the Weber number range of 0.2 to 3.6 and the collision process was captured by high speed imaging technique. It was observed, at lower to intermediate impact velocity range, that the particle was partially submerged into the droplet and slide along the convex interface whilst at higher impact velocity, the complete penetration was observed. Based on the forces acting on the particle at the interface, a simple model is proposed providing a satisfactory agreement with the experimental observations. Of all the forces involved, surface tension force was found to dominate the collision process in all the cases investigated. A 3D CFD model has also been developed incorporating the dynamic meshing technique with multiphase Volume of Fluid method which qualitatively agrees observed interface penetration behaviour.
- Subject
- droplet-particle collision; modelling; image processing; CFD; VOF; dynamic mesh
- Identifier
- http://hdl.handle.net/1959.13/1318975
- Identifier
- uon:23747
- Identifier
- ISBN:9781922107077
- Language
- eng
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