二次元対称急拡大流路内流れの非対称流に関する数値的研究

URI http://harp.lib.hiroshima-u.ac.jp/it-hiroshima/metadata/4205
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Title
二次元対称急拡大流路内流れの非対称流に関する数値的研究
Title Alternative
Numerical Study on Asymmetric Flow in Two-Dimensional Symmetric Sudden Expansion Channel.
Author
氏名 中西 助次
ヨミ ナカニシ スケツグ
別名 Nakanishi Suketsugu
氏名 桜井 元康
ヨミ サクライ モトヤス
別名 Sakurai Motoyasu
氏名 小田 伸剛
ヨミ オダ ノブタケ
別名 Oda Nobutake
Subject
Separation
Numerical Analysis
Internal Flow
Vortex
Finite Difference Method
Reattachment Point
Asymmetric Flow
Expansion Channel Flow
Laminar Flow
Navier-Stokes Equation.
Abstract

The laminar separated flow through the two-dimensional symmetric sudden expansion channel of expansion ratio α has been examined numerically. Navier-Stokes equation (stream function-vorticity formulation was used) was solved by the finite difference method using a pseudo-unsteady technique. For the cases of four different expansion ratios α=2,3, 3.5 and 4, calculations were performed for the range of the Reynolds number 20 ≦Re≦400. A part of the present investigation has already been reported in the Journal of JSME (1995). In this paper, reconsideration was made for the critical Reynolds number Rec (at which the asymmetric flow began) and the influence of expansion ratio α on critical Reynolds number Rec with some additional data of flow. Stream lines, distribution of velocity vector, distributions of pressure and pressure gradient were presented and discussed to clarify the re1ation between asymmetric flow pattern and the dynamic characteristics.

Journal Title
広島工業大学研究紀要
Volume
30
Spage
37
Epage
43
Published Date
1996
Publisher
広島工業大学
ISSN
03851672
NCID
AN0021271X
Language
jpn
NIIType
Departmental Bulletin Paper
Text Version
出版社版
Old URI
Set
it-hiroshima