Predicting the Movement of Particles and the Surface Shape of a Flowing Liquid Film on a Substrate under a Water Impinging Jet.

Togashi, Shigenori; Ohta, Takashi; Azuma, Hitoshi

doi:10.1299/kikaib.69.61

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Basic Flow Structures Of Free Surface Impinging Jets1

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2011

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“…This is consistent with the results of prior works. [23][24][25][26] In Fig. 6(b), a circular water jet impinges on a moving surface without a water film at V s = 0.2 m/s.…”

Section: Basic Flow Structures Of Free Surface Impinging Jetsmentioning

confidence: 99%

Flow Characteristics of Circular Liquid Jet Impinging on a Moving Surface Covered with a Water Film

et al. 2011

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The flow characteristics of a single circular water jet impinging on a moving surface covered with a water film have been investigated by means of experiments and three-dimensional computer simulations. The experiments were conducted by varying the jet velocity, nozzle-to-plate distance, and flow rate of the water film. It was found that the following three types of flow structures existed: an almost steady flow structure, an unsteady flow structure, and a transition flow structure between the steady and the unsteady flows. The critical boundary, at which the almost steady flow structure appears, is discussed using a simple potential flow theory. In the numerical simulation, the liquid flow was assumed to obey the Navier-Stokes equation in the three-dimensional Cartesian coordinate system. The effects of viscosity, gravity, and the presence of a free liquid surface were taken into account. The predictions were in reasonable agreement with the experimental results. Each flow structure has been studied in detail for a better understanding of the physics of the phenomena.

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“…This is consistent with the results of prior works. [23][24][25][26] In Fig. 6(b), a circular water jet impinges on a moving surface without a water film at V s = 0.2 m/s.…”

Section: Basic Flow Structures Of Free Surface Impinging Jetsmentioning

confidence: 99%