Effect of Wall Roughness on Laminar Flow of Bingham Plastic Fluids through Microtubes

2004 ◽  
Vol 126 (5) ◽  
pp. 880-883 ◽  
Author(s):  
Tahsin Engin, ◽  
Umit Dogruer, ◽  
Cahit Evrensel, ◽  
Scott Heavin, and ◽  
Faramarz Gordaninejad
Keyword(s):  
Laminar Flow ◽  
Wall Roughness ◽  
Bingham Plastic ◽  
Plastic Fluids

ANALYSIS OF CONTINUOUS STERILIZATION PROCESSES FOR BINGHAM PLASTIC FLUIDS IN LAMINAR FLOW

1979 ◽  
Vol 44 (3) ◽  
pp. 905-910 ◽  
Author(s):  
C. GUARIGUATA ◽  
J. A. BARREIRO ◽  
G. GUARIGUATA
Keyword(s):  
Laminar Flow ◽  
Bingham Plastic ◽  
Plastic Fluids

Explicit equations for laminar flow of Bingham plastic fluids

2011 ◽  
Vol 76 (3-4) ◽  
pp. 178-184 ◽  
Author(s):  
Prabhata K. Swamee ◽  
Nitin Aggarwal
Keyword(s):  
Laminar Flow ◽  
Bingham Plastic ◽  
Plastic Fluids

Forced Convective Flow of Bingham Plastic Fluids in a Branching Channel With the Effect of T-Channel Branching Angle

2021 ◽  
Vol 143 (5) ◽  
Author(s):  
Anamika Maurya ◽  
Naveen Tiwari ◽  
R. P. Chhabra
Keyword(s):  
Heat Transfer ◽  
Nusselt Number ◽  
Length Variation ◽  
Heat Transfer Characteristics ◽  
Local Pressure ◽  
Bingham Plastic ◽  
Transfer Characteristics ◽  
Wide Range ◽  
Branching Angle ◽  
Plastic Fluids

Abstract This work aims to explore the T-channel momentum and heat transfer characteristics with the combined effect of Bingham plastic fluids (0.01 ≤ Bn ≤ 20) behavior and geometrical variation in terms of branching angle (30 deg ≤ α ≤ 90 deg). The problem has been solved over a wide range of Reynolds number (50 ≤ Re ≤ 300) and Prandtl number (10 ≤ Pr ≤ 50). For the momentum flow, qualitative and quantitative features are analyzed in terms of streamlines, structure of yielded/unyielded regions, shear rate contours, plug width and length variation, and local pressure coefficient. These features have been represented in terms of isotherm patterns, temperature profile, Nusselt number, and its asymptotic value for heat transfer characteristics. The recirculating flows have been presented here in the vicinity of T-junction, which promote mixing and heat transfer. Broadly, the size of this zone bears a positive dependence on Re and α. However, fluid yield stress tends to suppress it. The critical Reynolds and Bingham numbers were found to be strong functions of the pertinent parameters like α. The inclination angle exerts only a weak effect on the yielded/unyielded regions and on the recirculation length of main branch. Results show a strong relationship of the plug width and length with key parameters and branches. The Nusselt number exhibits a positive relationship with α, Bn, and Re but for lower Pr in the T-junction vicinity for both branches. Such length indicates the required optimum channel length for thermal mixing.

Dispersion of matter in non-Newtonian laminar flow through a circular tube

1966 ◽  
Vol 292 (1429) ◽  
pp. 203-208 ◽  
Keyword(s):  
Laminar Flow ◽  
Newtonian Fluid ◽  
Circular Tube ◽  
Newtonian Fluids ◽  
Parallel Plane ◽  
Bingham Plastic ◽  
Ellis Model ◽  
Model Fluid ◽  
Flow Through

Taylor’s analyses of the dispersion of Newtonian fluids in laminar flow in a circular tube are extended to the flow of the Bingham plastic and Ellis model fluid. The previous results for the Newtonian fluid and power-low fluid can be deduced from the results of this work. It is indicated that Aris’s modification of Taylor’s analyses can be naturally applied to the non-Newtonian fluid. Results obtained for laminar flow between two parallel plane walls are given in the appendix.

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