Analytical solution for Newtonian–Bingham plastic two-phase pressure driven stratified flow through the circular ducts

2008 ◽  
Vol 35 (5) ◽  
pp. 666-673 ◽  
Author(s):  
M. Firouzi ◽  
S.H. Hashemabadi
Keyword(s):  
Analytical Solution ◽  
Stratified Flow ◽  
Two Phase ◽  
Bingham Plastic ◽  
Flow Through ◽  
Phase Pressure ◽  
Pressure Driven

Stratified flow model for two-phase pressure drop prediction in trickle beds

AIChE Journal ◽  
1988 ◽  
Vol 34 (3) ◽  
pp. 510-513 ◽  
Author(s):  
J. Biswas ◽  
G. V. Bhaskar ◽  
P. F. Greenfield
Keyword(s):  
Pressure Drop ◽  
Flow Model ◽  
Stratified Flow ◽  
Two Phase ◽  
Trickle Beds ◽  
Phase Pressure

Optic imaging of single and two-phase pressure-driven flows in nano-scale channels

Lab on a Chip ◽  
2013 ◽  
Vol 13 (6) ◽  
pp. 1165 ◽  
Author(s):  
Qihua Wu ◽  
Jeong Tae Ok ◽  
Yongpeng Sun ◽  
S. T. Retterer ◽  
Keith B. Neeves ◽  
...  
Keyword(s):  
Two Phase ◽  
Nano Scale ◽  
Phase Pressure ◽  
Pressure Driven

scholarly journals Temperature rise in a verging annular die

2016 ◽  
Vol 36 (7) ◽  
pp. 735-750 ◽  
Author(s):  
Georges R. Younes ◽  
A. Jeffrey Giacomin ◽  
Peter H. Gilbert
Keyword(s):  
Analytical Solution ◽  
Velocity Profile ◽  
Temperature Rise ◽  
Pressure Profile ◽  
Viscous Heating ◽  
Maximum Throughput ◽  
Flow Through ◽  
Pressure Driven Flow ◽  
Analytical Expressions ◽  
Pressure Driven

AbstractPlastic pipes, tubes or catheters are extruded by pressure-driven flows through annular dies. Whereas die lands are straight, the section connecting the die land to the extruder either converges or diverges, converging when the product is smaller than the extruder barrel, and diverging when larger. In this paper, we carefully consider the converging or diverging connecting flows, in spherical coordinates, for the most common configuration: the Newtonian pressure-driven flow through the annulus between two coapical coaxial cones. We derive theexactanalytical solution for the velocity profile, and then use this to arrive at theexactanalytical solution for the temperature rise caused by viscous heating. We care about this rise because it often governs maximum throughput, since pipe makers must protect the melt from thermal degradation. We find that both the velocity profile, and the temperature profile, peak over the same conical surface and this surface is nearer the inner die wall. We also provide analytical expressions for the nonlinear pressure profile and the die cooling requirement. We find that this cooling requirement is always higher on the inner cone.

ANALYTICAL SOLUTION FOR LAMINAR-LAMINAR TWO-PHASE STRATIFIED FLOW IN CIRCULAR CONDUITS

1996 ◽  
Vol 141-142 (1) ◽  
pp. 103-143 ◽  
Author(s):  
N. BRAUNER ◽  
J. ROVINSKY ◽  
D. M. MARON
Keyword(s):  
Analytical Solution ◽  
Stratified Flow ◽  
Two Phase
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