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미소기포 주입에 의한 마찰저항 감소에 대한 연구

Experimental Study of Friction Drag Reduction in Turbulent Flow with Microbubble Injection

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주제분류조선공학

초록

Abstract

For the experiment of the friction drag reduction by microbubble injection, a drag reduction water tunnel was specifically designed and made. Experimental apparatus and procedures were devised and developed for measuring the change of wall friction drag with microbubble injection. For fully-developed channel flows, the change of friction drag with important parameters of microbubble injection is investigated and the experimental data and results obtained are presented. The amount of friction drag reduction up to 25% is observed in the present study.

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