主催: 日本学術会議 「機械工学委員会，土木工学・建築学委員会合同IUTAM分科会」
共催: 応用物理学会, 化学工学会, 自動車技術会, 地盤工学会, 土木学会, 日本応用数理学会, 日本風工学会, 日本機械学会, 日本気象学会, 日本計算工学会, 日本計算数理工学会, 日本建築学会, 日本原子力学会, 日本航空宇宙学会, 日本混相流学会, 日本地震工学会, 日本数学会, 日本船舶海洋工学会, 日本伝熱学会, 日本物理学会, 日本流体力学会, 農業農村工学会
This work is concerned with a flag-like structure in a fluid flow. If a waving (fluttering, i.e. linearly unstable) flag is covered with piezoelectric elements it can be used to harvest energy from the flow. This problem has been considered by many researchers and it is known that the power generation efficiency is not high. The purpose of the present work is then to determine the shape variation along the flag which maximizes a certain efficiency criterion. The analysis is limited to two dimensions and the flag is thus treated as a Bernoulli-Euler beam. The flow model is based on Theodorsen’s (1935) solution, in the somewhat simplified form of Argentina & Mahadevan (2005), but extended to take gentle flag shape variations into account. The main emphasis is here on flow model details.
