Variation of the recirculation length of Newtonian and non-Newtonian power-law fluids in laminar flow through a suddenly expanded axisymmetric geometry

被引：16
|
作者：
Nag, Debabrata [1 ]
Datta, Amitava
机构：
[1] Jadavpur Univ, Dept Mech Engn, Kolkata 700032, W Bengal, India
[2] Jadavpur Univ, Dept Power Engn, Kolkata 700098, India
来源：
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME | 2007年 / 129卷 / 02期
关键词：
D O I：
10.1115/1.2409361
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A numerical study has been carried out for the laminar flow of Newtonian and non-Newtonian power-law fluids through a suddenly: expanded axisymmetric geometry. Mathematical correlations are proposed for the prediction of the length of the recirculating eddy in terms of Reynolds number expansion ratio and rheological parameters. A wide range of expansion ratios (1.25 <= ER <= 8.0) has been covered for the Newtonian fluid and both the shear-thinning and shear-thickening flow characteristic fluids have been considered for the non-Newtonian fluids.
引用
收藏
页码：245 / 250
页数：6
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