関西支部講演会講演論文集
Online ISSN : 2424-2756
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1409 波数域を限定した操作による壁乱流の抵抗変化に関する数値実験
田所 敬英梶島 岳夫太田 貴士
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会議録・要旨集 フリー

p. _14-17_-_14-18_

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It is known that turbulent drag is reduced at algae planted wall. We think that algae interact with turbulent flow in specific wave number domain. The drag reduction effect by means of Direct Numerical Simulation (DNS) with simplified model for algae in fully developed turbulence flow field, we increase the resistance force of transverse direction near the wall in specific wave number domain. Our results suggest that the spanwise damping in lower wave-number domain is more effective for drag reduction, but also that the operation at very restricted scale is not satisfactory.
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© 2003 一般社団法人 日本機械学会
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