722 下端放水と越流を同時に行うシェル形長径間ゲートの流体関連振動に関する研究 : クレストに働く動水圧の計測と自励振動特性に関する検討(OS-4 振動・騒音制御の先端技術)

概要

論文の詳細を見る
Shell-type long-span gates with simultaneous under-and overflow undergo bending vibrations in both the streamwise (horizontal) and vertical directions which are coupled through hydrodynamic forces acting on both the gate crest and the upstream weir plate. This paper presents the model test results for hydrodynamic pressure acting on the gate crest and the examination of self-excited vibration. A two-dimensional laboratory model of a shell-type long-span gate with the smoothly curved crest and vertical weir plate in the upstream side was forced to vibrate in the horizontal and vertical directions with a small gate amplitude at various frequencies, and the hydrodynamic pressure acting on the crest was carefully measured. The data for pressure amplitude and phase lag were shown, and hydrodynamic forces were calculated. Moreover, the frequency and excitation ratio of self-excited vibration of the gate were calculated from the data for hydrodynamic force.
社団法人日本機械学会の論文
2000-03-16