壁面の一部が進行波状に変形する2次元チャネル内の流れ解析(流体工学,流体機械)

概要

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The laminar unsteady flows through a two-dimensional channel with the local progressive wavy wall have been studied numerically. In this study, our main attention was paid to the influence of thelocal progressive wavy wall on the flow patterns in the downstream side. The coordinate transformation method was adopted to analyze the moving boundary problem and the fully implicit scheme was used to solve the Navier-Stokes equation and the equation of continuity. The calculation resultswere summarized as follows. (1) The direction of the phase velocity for the local progressive wavy wall has a strong effect on the flow structure in the downstream side. (2) The additional pressureloss takes a maximum value when the phase velocity of the local progressive wavy wall IS m the neighborhoods of the mean bulk velocity. (3) The local progressive wavy wall with the opposite progress direction to the bulk flow has an effect to restrain the increase in the additional pressure losscompared with the local progressive wavy wall with the same progress direction to the bulk flow.
社団法人日本機械学会の論文
2007-03-25