Three flow regimes of viscous jet falling onto a moving surface

A.V. Hlod, A.C.T. Aarts, A.A.F. Ven, van de, M.A. Peletier

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)

Abstract

A stationary viscous jet falling from an oriented nozzle onto a moving surface is studied theoretically. The fluid is modelled as a Newtonian fluid, and the model for the flow includes viscous effects, inertia and gravity. We distinguish three flow regimes, called inertial, viscous-inertial and viscous, according to which effect is dominant in the momentum transfer through the jet cross section. By studying the characteristics of the conservation of momentum for a dynamic jet, the boundary conditions for each flow regime are derived, and the flow regimes are characterized in terms of the process and material parameters. The model is solved by a transformation into an algebraic equation. The parameter regions of the three flow regimes, and their boundaries, are confirmed experimentally. Influences of surface tension, bending stiffness and air drag are presented.
Original languageEnglish
Pages (from-to)196-219
JournalIMA Journal of Applied Mathematics
Volume77
Issue number2
DOIs
Publication statusPublished - 2012

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