0314 柔軟壁における乱流表面摩擦の低減(OS3-3 流れの抵抗低減,オーガナイズドセッション)

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This paper describes an experimental research on the drag reduction of turbulent surface friction on the compliant wall. The experiment is carried out on the turbulent boundary layer along a hard wall and a compliant wall at Re=3.0×10^5. The compliant wall was made of silicone rubber with 5mm thickness. Its bottom plate is almost fixed end, but partly free end. The boundary layer was measured using I-type hot wire on a solid wall, compliant wall with fixed end and free end. Local skin friction coefficients on the fixed end compliant wall and on the free end compliant wall were smaller than the solid wall by approximately 4% and 2% respectively. So, characteristic frequency of compliant wall is changed free end and fixed end.
一般社団法人日本機械学会の論文
2009-11-06