Abstract
Reducing pipe friction by adding a drag reducing agent has attracted interest as a means to reduce energy consumption. In addition to reducing drag, drag reducing agents should also have a low environmental load and conserve natural resources. However, no drag reducing agent currently satisfies both these conditions. The present study investigates the use of bamboo fibers as a drag reducing agent that satisfies both conditions. The drag reducing effect was evaluated by measuring the pressure drop in pipe flow. Bamboo fiber suspensions reduced drag by up to 20%. In addition, bamboo fibers could be easily removed from suspensions by a filter. These results demonstrate that bamboo fibers are a drag reducing agent that both save natural resources and have a low environmental load.
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