G213 溶融高分子ポリマー流のメルトフロント気液界面の非定常局所挙動の解析 : 薄板矩形流路内の場合(OS-13 材料加工における熱工学関連技術I)

概要

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In the melting of high-polymer material on industrial applications, there are unsteady flow phenomena on its non-Newtonian properties. For the stability and controllable evaluations of flow and heat transfer, the unsteady interface phenomena in melt-front of high-polymer materials (PP) with several flow configurations (rectangular flow with 5mm & 1mm thickness, with/without artificial surface control) are shown as local and unsteady geographic shape of the gas-liquid interface experimentally with the visualizing images of high-speed CCD video. From experimental results and considerations, the gas-liquid interface changes its shape properties time-dependently, and the two-way transitions of phenomena and all-over instability are detected in the system, which mean that one is from the center to wall (fountain-flow-like), another is from near-wall to center by non-uniform slipping phenomena at near-wall region. These results is important in building the flow and heat transfer three-dimensional mechanism models of high-polymer flow by ejection process in rectangular flow system. As a result of this experiment, this research opens a new dimension by utilizing Wavelet in analyzing flow under artificial conditions.
一般社団法人日本機械学会の論文
2005-11-02