Axisymmetric wave regimes in viscous liquid film flow over a spinning disk

Sisoev, Grigori M.; Matar, O. K.; Lawrence, C.J.

doi:10.1017/s0022112003006360

Cited by 52 publications

(93 citation statements)

References 25 publications

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“…Future work will focus on extending these calculations to related flows, such as the flow of a thin liquid film over a spinning disc, that has recently been investigated by Sisoev et al (2003). This flow, which is also accompanied by finiteamplitude waves, is more amenable to control than that associated with a falling liquid film.…”

Section: Resultsmentioning

confidence: 99%

Absorption of gas into a wavy falling film

Sisoev¹,

Matar²,

Lawrence³

2005

Chemical Engineering Science

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Section: Resultsmentioning

confidence: 99%

Absorption of gas into a wavy falling film

Sisoev¹,

Matar²,

Lawrence³

2005

Chemical Engineering Science

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“…On the other hand, the vibration of the disc is assumed not to have much influence on the formation of wavy film surface on the disc. Sisoev et al (2003) calculated the axisymmetric wave in viscous liquid film flowing over a spinning disc neglecting the vibration of the disc. The wave in the melt film on the disc, if it exists, can affect the film formation on the disc and cause the transition of disintegration modes, for instance, from film disintegration mode to ligament disintegration mode.…”

Section: Instability Of the Melt Filmmentioning

confidence: 99%

Vibration of spinning discs and powder formation in centrifugal atomization

Deng

Ouyang

2010

Proc. R. Soc. A.

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Spinning discs with liquid film on the surface have numerous applications in many industrial processes and have attracted a lot of investigations. Centrifugal atomization of metallic melts using a spinning disc is an efficient process for powder production and spray deposition, which is a typical example of a spinning disc interacting with a liquid film. In this paper, the vibration of an atomizing disc excited by a moving melt is analysed and the role of vibration in the disintegration of the melt film on atomizing discs is then investigated. A dynamic model of the atomizing disc as a spinning Kirchhoff plate is established with moving melt film treated as a moving load on the disc and as an unstable growing wave interacting with the surrounding air outside the disc. The powder size is analysed theoretically and then compared with experimental results. It is found that the predicted results agree with the experimental results very well in the film disintegration mode. Furthermore, the influences of the atomizer parameters on the melt break up and powder size are discussed. The control parameters in the centrifugal atomization are identified, which can provide guidance for atomizer designs.

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“…A fully resolved numerical simulation is unfeasible due to the exceedingly high spatial resolution requirements, which arise from the small molecular diffusivity leading to a thin concentration boundary layer, and the thin film nature of the flow, resulting in a large disparity between the two governing length scales in the radial and vertical directions. The integral boundary layer (IBL) approximation offers a computationally less costly alternative approach which has already been successfully used to analyze the fluid dynamics and gas absorption into a thin film flow on a spinning disk in various previous studies (e.g., Kim & Kim [1], Sisoev et al [2], Matar et al [3]). The objective of the present work is to extend the IBL approximation for the solid-liquid mass transfer (Prieling & Steiner [4]) to unsteady flow in order to analyze in particular the effect of the surface waves on the mass transfer.…”

Section: Introductionmentioning

confidence: 99%