The Proceedings of the Fluids engineering conference
Online ISSN : 2424-2896
2015
Session ID : 612
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0612 Frictional resistance of the hydrophilic gel wall
Sho KUDOShin ARUGASatoshi OGATA
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
The flow resistance of flat plates with hydrophilic gel wall in water tunnel were measured. A test hydrophilic gel was produced by using agar, which was prepared with concentration of 0.75, 1.0, and 3.0%. Experiments were performed in the range of flow velocity U of 0.04 < U < 0.3 m/s. Drag reduction was obtained for all values of the concentration. The maximum drag reduction was approximately 9.7%. Throughout the measurement range, the larger drag reduction was obtained with the smaller agar concentration. As the flow velocity increased, the drag reduction decreased.
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© 2015 The Japan Society of Mechanical Engineers
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