The Study of Hydrodynamic Characteristic on Movement of Scallop Patinopecten yessoensis by Wave and Flow

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  • ホタテガイの流れや波浪による移動時における流体力特性に関する研究
  • ホタテガイ ノ ナガレ ヤ ハロウ ニ ヨル イドウジ ニ オケル リュウタイリョク トクセイ ニ カンスル ケンキュウ

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Abstract

For scallop Patinopecten yessoensis, fom factors (e.g., shell height, projection area, submerged weight and volume) were measured. So they can be expressed as a function of the shell height. Drag, lift and mass force acting on scallop were measured. And drag coefficient, lift coefficient and mass coefficient were calculated. Most great force act on scallop when current flow towards scallop at a 0 degree of attack angle and 15 degrees of inclined angle. The critical flow conditions of the initial movement can be determined based on the balance condition of the rolling moment. The wave conditions that fomed the habitat were also detemined by small amplitude wave theory. The allowable significant wave height (H1/3) can be expressed as a function of the period (T), the wavelength (L), the depth (h) and the shell height (SH) in the following formula:

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