K-1509 アクチュエータアレーによる壁乱流の能動制御(J07-2 マイクロ熱流体現象の機能利用デバイス)(J07 マイクロマシン技術と熱流体現象)

概要

論文の詳細を見る
Turbulent flow control using an actuator array and related modification of the turbulent spatial structure were experimentally examined using a PIV system. The actuator array consists of six piezo-ceramic elements which can vertically oscillate in spanwise direction. It can also produce spanwise perturbations in the flow near the wall by changing the mode of actuator elements and will create cross-flow locally. In case of "wavy mode", the regularity of streak-like structures tends to decrease at y^+=50 in x-z plane for the frequency of the actuator array more than 12.5 Hz, which is close to the frequency of bursting intervals at Re=7500 using our channel system.
社団法人日本機械学会の論文
2001-08-22