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oai:it-hiroshima.repo.nii.ac.jp:00000574 2023-07-25T10:45:51Z 1:17:211

2次元急拡大流路内流れに関する研究(流路中心線上の流速値を用いた流れ構造の予測) Study in Two-Dimensional Sudden Expansion Channel Flow (Prediction of Flow Structure by the Value of Streamwise Velocity on Centerline of Channel) 中西, 助次 ナカニシ, スケツグ 西槙, 伸之 ニシマキ, ノブユキ Nakanishi, Suketsugu Nishimaki, Nobuyuki Separation Numerical Analysis Finite Difference Method Reattachment Point Expansion Channel Flow Laminar Flow Navier-Stokes Equation. application/pdf The objective of this study was to examine the flow structure for a laminar separated flow through a two-dimensional symmetric sudden-expansion channel of expansion ratio α. As a computational and analytical model of the expansion channel, the two-dimensional channel with backward-facing steps on both upper and lower walls was considered. The Navier-Stokes equations were solved numerically by the finite difference method. The caluculation was performed for the range of Reynolds number Re≦400. In this paper, the analytical prediction of the separated flow structure using the numerical results of the streamwise velocity on the centerline was made for the case of expansion α=2. The analytical results of the velocity profile and the distribution of pressure gradient were presented and were compared with that of numerical results. 広島工業大学 1997 jpn departmental bulletin paper VoR https://it-hiroshima.repo.nii.ac.jp/records/574 AN0021271X 03851672 広島工業大学研究紀要 31 69 74 https://it-hiroshima.repo.nii.ac.jp/record/574/files/kenkyukiyo31069.pdf application/pdf 266.6 kB 2023-03-30