413 Flow Characteristics of Dilute Polymer Solutions in a Micro Tube

2005 ◽  
Vol 2005.43 (0) ◽  
pp. 141-142
Author(s):  
Keizo Watanabe ◽  
Munehiko Hirao ◽  
Satoshi Ogata
Keyword(s):  
Polymer Solutions ◽  
Flow Characteristics ◽  
Dilute Polymer Solutions

Flow Characteristics of Dilute Polymer Solutions in Micro Tubes

2007 ◽  
Author(s):  
Keizo Watanabe ◽  
Satoshi Ogata ◽  
Munehiko Hirao
Keyword(s):  
Flow Rate ◽  
Polymer Solutions ◽  
Flow Characteristics ◽  
Fused Silica ◽  
Flow Rate Ratio ◽  
Distilled Water ◽  
Number Range ◽  
Micro Piv ◽  
Dilute Polymer Solutions ◽  
Piv Measurement

Pressure drops and velocity profiles for micro tubes were investigated for the laminar flow of distilled water and dilute polymer solutions. The test micro tubes were fused silica capillaries with diameters in the range of 50.2–251.8 μm, and a value of l/d (length/diameter) of about 340. By performing pressure drop measurements, it is shown that the experimental data agree well with the Hagen-Poiseuille equation in the case of Newtonian fluids. On the other hand, the flow rate of dilute polymer solutions increases relative to that of distilled water in the low Reynolds number range. The increased flow rate ratio is a maximum of about 15% in the case of d = 251.8 μm. For the result of the micro PIV measurement, however, there are few differences between the velocity profile of distilled water and the Peo 5 ppm solution.

On the mechanism of drag reduction in dilute polymer solutions

1996 ◽  
Vol 55 (4) ◽  
pp. 289-295 ◽  
Author(s):  
K. Hoyer ◽  
A. Gyr ◽  
A. Tsinober
Keyword(s):  
Drag Reduction ◽  
Polymer Solutions ◽  
Dilute Polymer Solutions

scholarly journals Fluid acceleration in the bulk of turbulent dilute polymer solutions

2008 ◽  
Vol 10 (12) ◽  
pp. 123015 ◽  
Author(s):  
Alice M Crawford ◽  
Nicolas Mordant ◽  
Haitao Xu ◽  
Eberhard Bodenschatz
Keyword(s):  
Polymer Solutions ◽  
Dilute Polymer Solutions
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