scholarly journals Numerical Study on Fully-Developed Turbulent Flow in Vegetated and Non-Vegetated Zones in a Cross-Section of Open Channel

1992 ◽  
Vol 36 ◽  
pp. 265-272 ◽  
Author(s):  
Yoshihiko SHIMIZU ◽  
Tetsuro TSUJIMOTO ◽  
Hiroji NAKAGAWA
Keyword(s):  
Turbulent Flow ◽  
Cross Section ◽  
Open Channel ◽  
Numerical Study ◽  
Fully Developed Turbulent Flow

scholarly journals Numerical Study of Turbulent Secondary Flows in Curved Ducts

1990 ◽  
Vol 112 (2) ◽  
pp. 205-211 ◽  
Author(s):  
N. Hur ◽  
S. Thangam ◽  
C. G. Speziale
Keyword(s):  
Experimental Data ◽  
Turbulent Flow ◽  
Secondary Flow ◽  
Cross Section ◽  
Numerical Study ◽  
Secondary Flows ◽  
Fully Developed Turbulent Flow ◽  
Volume Method ◽  
Curved Ducts ◽  
Good Agreement

The pressure driven, fully developed turbulent flow of an incompressible viscous fluid in curved ducts of square cross-section is studied numerically by making use of a finite volume method. A nonlinear K -1 model is used to represent the turbulence. The results for both straight and curved ducts are presented. For the case of fully developed turbulent flow in straight ducts, the secondary flow is characterized by an eight-vortex structure for which the computed flowfield is shown to be in good agreement with available experimental data. The introduction of moderate curvature is shown to cause a substantial increase in the strength of the secondary flow and to change the secondary flow pattern to either a double-vortex or a four-vortex configuration.

scholarly journals NUMERICAL STUDY OF TURBULENT FLOW OVER CIRCULAR STRIP ROUGHNESS IN OPEN CHANNEL

1996 ◽  
Vol 40 ◽  
pp. 1077-1082
Author(s):  
Jian LIU ◽  
Akihiro TOMINAGA ◽  
Masashi NAGAO
Keyword(s):  
Turbulent Flow ◽  
Open Channel ◽  
Numerical Study

scholarly journals A study of the effect of curvature on fully developed turbulent flow

1935 ◽  
Vol 148 (865) ◽  
pp. 565-598 ◽  
Keyword(s):  
Boundary Layer ◽  
Turbulent Flow ◽  
Boundary Layers ◽  
Cross Section ◽  
Variable Thickness ◽  
Curved Surfaces ◽  
Constant Cross Section ◽  
Curved Channel ◽  
Curved Boundary ◽  
Fully Developed Turbulent Flow

1—The solution of many important problems in aeronautics and hydraulics depends largely on the behaviour of turbulent flow along curved surfaces. In flow along plane surfaces the following method has proved to be successful. The laws of turbulent velocity distribution were investigated in straight tubes and channels of constant cross-section and the results applied to the boundary layer with variable thickness. The present work has undertaken with the idea of isolating the effect of curvature on the turbulent flow as much as possible, by using a curved channel of constant curvature and cross-section. It is hoped that the results of these experiments may be applied later to the general case of curved boundary layers.

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