水中で正弦的に振動する斜正四角柱の流体反力

概要

論文の詳細を見る
The hydrodynamic forces generated by interaction between water and diagonal square cylinder have been investigated experimentally. A diagonal square cylinder model of 56.6mm diagonal length and 200mm span length was used. The cylinder supported by two endplates was oscillated horizontally in standing water by mechanical oscillation machinery. The force was measured by means of a quartz force transducer. Period parameters ranging from 0.2 to 3.0 and Reynolds numbers from 5000 to 40000 were covered in the investigation. The results have shown that the force amplitude coefficients of the two-dimensional diagonal square cylinder, which are obtained at end-plate dimensions of greater than 5 times the cylinder diagonal length, and the force waveforms depend on the period parameter but not on the Reynolds number. It is further shown that the force coefficient increases with the period parameter. The results are compared with the data of the square cylinder and the circular cylinder reported by the authors. The comparison indicates that the correlations between the phase difference and the force coefficient are the same.
一般社団法人日本機械学会の論文
1992-02-25