کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
687254 1460127 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Wave interactions on a viscous film coating a vertical fibre: Formation of bound states
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Wave interactions on a viscous film coating a vertical fibre: Formation of bound states
چکیده انگلیسی

Fibre coating has attracted considerable attention over the past years due to its engineering applications as well as fundamental interest generated by the fascinating complexity of the resulting flow. A liquid film coating axisymmetrically a vertical fibre and flowing under the action of gravity spontaneously breaks up into a regular drop-like wave train. This instability results primarily from the capillary pressure induced by the azimuthal curvature (Rayleigh–Plateau instability) while the pressure induced by the axial curvature has a stabilising effect. Streamwise viscous diffusion plays a dispersive role that dramatically affects the waves selection, speeds and shapes. When both surface tension and viscosity effects are strong, complex wave interactions lead to the formation of bound states. In this study, we investigate experimentally the details of those interactions and show that regular patterns of bound states can be obtained by external forcing. A qualitative theoretical explanation of the experimental findings is provided with a simple model for the flow.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering and Processing: Process Intensification - Volume 50, Issues 5–6, May 2011, Pages 519–524
نویسندگان
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