2021-09-22T02:29:37Zhttps://kitami-it.repo.nii.ac.jp/oaioai:kitami-it.repo.nii.ac.jp:000064942021-03-01T06:50:59Z平面壁上に存在する直立円柱の空気力学的特性* -抗力係数と乱流境界層特性量との関係-Aerodynamic Characteristics of Circular Cylinders Vertically Mounted on a Plane Wall -Relation between the drag coefficient and the characteristics of turbulent boundary layers谷口, 清一坂本, 弘志application/pdfAn experimental investigation is carried out on the flow around a circular cylinder vertically mounted on a smooth plane wall along which a turbulent boundary layer is fully developed. The pressure drag of the cylinder is correlated with the height h, the diameter d of the cylinder and the characteristics of the boundary layer. The pressure drag coef ficient C_D is found to be expressed in the form C_D=a･(h/δ)^b, where δ is the thickness of the boundary layer and the values of a and b depend on h/δ. For h/δ ＜__?1.1, a and b are linear functions of d/δ only while they are constant in the range h/δ＞__?1.1.北見工業大学1981-01jpndepartmental bulletin paperhttps://kitami-it.repo.nii.ac.jp/records/6494北見工業大学研究報告121112https://kitami-it.repo.nii.ac.jp/record/6494/files/12-1-1.pdfapplication/pdf4.4 MB2016-11-22