粘弾性流体の流路内流動に伴う異常現象に関する研究 : 異常現象発生臨界点

概要

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When a viscoelastic fluid flows out from a horizontally placed rectangular duct, many cracks and upheavals are formed on the upper surface of the jet. This anomalous phenomenon is reported for the first time by authors. We investigate the appearance critical point of this anomalous phenomenon is reported for the first time by authors. We investigate the appearance critical point of this anomalous phenomenon under various conditions. Fourteen ducts having various heights, widths and lengths are used in this study. They have a knife edge and semi-cylinder shaped duct exits. We also use four kinds of fluids having different flow properties. Moreover, we find an empirical formula for the appearance critical point of the anomalous phenomenon making use of the dimensional analysis method.
社団法人日本機械学会の論文
1988-11-25