振動弾性板流れ発生機の高質量比における最適作動状態(液体工学,液体機械)

概要

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A Vibrating Elastic Plate Flow Generators (VEPFG) induces a strong fluid jet by a thin plate excited at the leading edge. The fluid-dynamic performances and working conditions of a VEPFG with mass ratios sufficiently high were analyzed by use of a method based on small perturbation and potential flow concept, including forces of elasticity, inertia, and fluid-dynamics. The optimum performances were found to be obtained close to resonant conditions ; the thrust coefficients are of the order of 1×10^6, quite high compared with those for low mass ratios, which are unity at most. The efficiency levels, however, are of the order of 50 percent, relatively low compared with those for the low mass ratio region, which are above 95 percent. The feature might make the high-mass-ratio VEPFG a very compact and powerful flow generator, particularly in air.
社団法人日本機械学会の論文
2003-09-25