Pipe Flows of Dilute Aqueous Polymer Solution : Part 1,Experimental Study of Pipe Friction Coefficient
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概要
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Pipe flows of dilute aqueous polymer solution are studied experimentally. Measurement is made for two different pipe-sizes using 0.5 to 70 wppm solutions of polyethylene oxide of approximate molecular weight of 6×10^6. The results show : 1) the friction coefficient is dependent, under a certain condition, on a heading tank water level and this phenomenon is not due to pressure : 2) the Toms effect is promoted at relatively small Reynolds number by decreasing the pipe diameter, increasing the concentration and /or the heading tank level : 3) an unusual pressure drop occurs upstream immediately before the orifice plate : and 4) interesting behavior of dye filaments in pipe flow is observed in the transition and turbulent flow regions.
- 一般社団法人日本機械学会の論文
著者
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Tomita Yuji
Department Of Chemical Engineering And Materials Science Faculty Of Engineering Doshisha University
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Tomita Yuji
Department Of Mechanical Engineering Kyushu Institute Of Technology
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- Pipe Flows of Dilute Aqueous Polymer Solution : Part 1,Experimental Study of Pipe Friction Coefficient
- Pipe Flows of Dilute Aquwous Polymer Solution : Part 2,Correlation of the Frictional Characteristics