透過性構造物内部の波の運動に関する研究

概要

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The purpose of this investigation is a analysis of wave motion in the porous structure. In order to analysis of wave motion in these structure, it is necessary to decide a resistance coefficient of these structure under a unsteady flow. Then a few experiments were performed in order to decide of resistance coefficient, and We obtained a next equation ƒ/σ=4.164-10.832/(Fr・h/d)+8.593/(Fr・h/d)^2 Fr・h/d>1.5,σ=2π/T, (21) where f is the resistance coefficient, Fr denotes the Fround's number, h is the water depth and d represents the diameter of glass ball. This is a empirical equation obtained by dimensional analysis of various experimental results. Using this empirical equation in to eq (7), (8), (9), (10), (18) and eq (19) we can estimate a wave motion and velocity distribution in a porous structure. Experimental values agree well with theoretical results.
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