Direct Measurements of Velocity Profiles in Flows of Polymer Solutions through a Rectangular Microchannel with a PDMS Surface
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概要
- 論文の詳細を見る
Velocity profiles of polymer solutions were directly measured in a microchannel with rectangular cross sections. The test fluids are 0.2 wt% aqueous solutions of polyacrylamide whose molecular weights are 6 × 106 (fluid A) and 1.5 × 107 (fluid B). The microchannel was made of PDMS and it was mounted on the glass plate. The velocity profile in the depth direction is discussed as a function of the flow rate and shear stress on the wall. Consequently, for the flows of fluid A, a symmetric profile is observed in the region between the PDMS wall and the glass wall in a low flow rate, but the velocity profile slightly becomes asymmetric with increasing flow rate: the velocity near the PDMS wall is larger than that near the glass wall. For the flows of fluid B, a slightly asymmetric profile is observed even in the low flow rate and a largely asymmetric one in the large flow rate. The PDMS wall significantly affects the velocity profile in the flow of polymer solution through a PDMS microchannel.
- 日本レオロジー学会の論文
著者
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YASUDA KAZUNORI
Department of Sports Medicine and Joint Reconstruction Surgery, Hokkaido University Graduate School
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Mori Noriyasu
Department Of Mechanophysics Engineering Graduate School Of Engineering Osaka University
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Mori Noriyasu
Department Of Cardiovascular Medicine Gitu Municipal Hospital
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Yasuda Kazunori
Department Of Clinical Biomechanics Hokkaido University.
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Sugiura Yuichi
Department of Mechanical Engineering, Graduate School of Engineering, Osaka University
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