The understanding of drag reduction by injection of polymer solutions requires an adequate and accurate polymer solution preparation process as well as a thorough understanding of the effects that the delivery system might have on the polymer flow. Mass production of polymer solutions for engineering applications could be more cost effective if large batches of highly concentrated polymer solutions are prepared and then diluted to the final concentrations of interest. However, as shown in this study, depending on the type of polymer used this procedure might be more or less adequate. This study also corroborates that the presence of macro-molecular polymer structures induced by injecting highly concentrated polymer solutions into a shear flow translates into a drag increase and substantial degradation endurance especially at high Reynolds numbers in comparison to homogeneous polymer solutions.

1.
Toms
,
B. A.
, 1948, “
Some Observations on the Flow of Linear Polymer Solutions through Straight Tubes at Large Reynolds Numbers
,”
Proceedings First International Congress in Rheology
.
2.
Lumley
,
J. L.
, 1977, “
Drag Reduction in Two Phase and Polymer Flows
,”
Phys. Fluids
0031-9171,
20
, pp.
S64
S71
.
3.
Ryskin
,
G.
, 1987, “
Turbulent Drag Reduction by Polymers: A Quantitative Theory
,”
Phys. Rev. Lett.
0031-9007,
59
, p.
2059
2062
.
4.
DeGennes
,
P. G.
, 1986, “
Towards a Scaling Theory of Drag Reduction
,”
Physica A
0378-4371,
140
, pp.
9
25
.
5.
Tabor
,
M.
,
Durning
,
C. J.
, and
O’Shaughnessy
,
B.
, 1989, “
The Microscopic Origins of Drag Reduction
,”
Internal Report of the Department of Applied Physics
,
Columbia University
, New York.
6.
Koskie
,
J. E.
, and
Tiederman
,
W. G.
, 1991, “
Turbulence Structure and Polymer Drag Reduction in Adverse Pressure Gradient Boundary Layers
,” Technical Report PME-FM-91-3,
Purdue University
, West Lafayette, Indiana.
7.
Den Toonder
,
J. M.
,
Draad
,
A. A.
,
Kuiken
,
G. D. C.
, and
Nieuwstadt
,
F. T. M.
, 1995, “
Degradation Effects of Dilute Polymer Solutions on Turbulent Drag Reduction in Pipe Flows
,”
Appl. Sci. Res.
0003-6994,
55
, pp.
63
82
.
8.
Vlachogiannis
,
M.
, and
Hanratty
,
T. J.
, 2003, “
Influence of Wavy Structured Surfaces and Polymer Aggregation on Drag Reduction
,”
Exp. Fluids
0723-4864,
36
(
5
), pp.
685
700
.
9.
Fortuna
,
G.
, and
Hanratty
,
T. J.
, 1972, “
The Influence of Drag-Reducing Polymers on Turbulence in the Viscous Sublayer
,”
J. Fluid Mech.
0022-1120,
53
, pp.
575
586
.
10.
Rieschman
,
M. M.
, and
Tiederman
,
W. G.
, 1975, “
Laser-Doppler Anemometer Measurements in Drag-Reducing Channel Flows
,”
J. Fluid Mech.
0022-1120,
70
, pp.
369
392
.
11.
McComb
,
W. D.
, and
Rabie
,
L. H.
, 1982, “
Local Drag Reduction Due to Injection of Polymer Solutions into Turbulent Flow in a Pipe
,”
AIChE J.
0001-1541,
28
, pp.
547
557
.
12.
Tiederman
,
W. G.
,
Luchich
,
T. S.
, and
Bogard
,
D. G.
, 1985, “
Wall Layer Structure and Drag Reduction
,”
J. Fluid Mech.
0022-1120,
156
, pp.
419
437
.
13.
Willmarth
,
W. W.
,
Wei
,
T.
, and
Lee
,
C. O.
, 1987, “
Laser Anemometer Measurements of Reynolds Stress in a Turbulent Channel Flow with Drag Reducing Polymer Additives
,”
Phys. Fluids
0031-9171,
30
, pp.
933
935
.
14.
Luchik
,
T. S.
, and
Tiederman
,
W. G.
, 1988, “
Turbulent Structure in Low-Concentration Drag-reducing Channel Flows
,”
J. Fluid Mech.
0022-1120,
190
, pp.
241
263
.
15.
Wei
,
T.
, and
Willmarth
,
W. W.
, 1992, “
Modifying Turbulent Structure with Drag-Reducing Polymer Additives in Turbulent Channel Flows
,”
J. Fluid Mech.
0022-1120,
245
, pp.
619
641
.
16.
Sureshkumar
,
R.
,
Beris
,
A. N.
, and
Handler
,
R. A.
, 1997, “
Direct Numerical Simulation of the Turbulent Channel Flow of a Polymer Solution
,”
Phys. Fluids
1070-6631,
9
, pp.
743
755
.
17.
Dimitropoulos
,
C. D.
,
Sureshkumar
,
R.
,
Beris
,
A. N.
, and
Handler
,
R. A.
, 2001, “
Budgets of Reynolds Stress, Kinetic Energy and Streamwise Enstrophy in Viscoelastic Turbulent Channel Flow
,”
Phys. Fluids
1070-6631,
13
(
4
), pp.
1016
1027
.
18.
Fontaine
,
A. A.
,
Petrie
,
H. L.
, and
Brungart
,
T. A.
, 1992, “
Velocity Profile Statistics in a Turbulent Boundary Layer with Slot-Injected Polymer
,”
J. Fluid Mech.
0022-1120,
238
, pp.
435
466
.
19.
Somandepalli
,
V. S. R.
,
White
,
C. M.
, and
Mungal
,
M. G.
, 2003, “
Boundary Layer Studies on Polymer Drag Reduction Using PIV and PLIF
,”
Proceedings 4th ASME/JSME Joint Fluids Engineering Conference
, Hawaii.
20.
Vleggaar
,
J.
, and
Tels
,
M.
, 1973, “
Drag Reduction by Polymer Threads
,”
Chem. Eng. Sci.
0009-2509,
28
, pp.
965
968
.
21.
Smith
,
R. E.
, and
Tierderman
,
W. G.
, 1991, “
The Mechanism of Polymer Thread Drag Reduction
,”
Rheol. Acta
0035-4511,
30
, pp.
103
113
.
22.
Bewersdorff
,
H. W.
,
Gyr
,
A.
,
Hoyer
,
K.
, and
Tsinober
,
A.
, 1993, “
An Investigation of Possible Mechanisms of Heterogeneous Drag Reduction in Pipe and Channel Flows
,”
Rheol. Acta
0035-4511,
32
, pp.
140
149
.
23.
Shen
,
X.
,
Kim
,
K.
,
Miller
,
J.
,
Sun-Chee-Fore
,
R.
, and
Sirviente
,
A. I.
, 2003, “
Experimental Study of Polymer Drag Reduction in a Turbulent Channel Flow
,”
Proceedings 4th ASME/JSME Joint Fluids Engineering Conference
, Hawaii.
24.
Kim
,
K.
,
Islam
,
M. T.
,
Shen
,
X.
,
Sirviente
,
A. I.
, and
Solomon
,
M. J.
,2003, “
Effect of Macro-Molecular Polymer Structures on Drag Reduction in a Turbulent Channel Flow
,”
Phys. Fluids
1070-6631,
16
(
11
), pp.
4150
4162
.
25.
Hoyt
,
J. W.
, 1986, “
Drag Reduction
,”
Encyclopedia of Polymer Science and Engineering
, edited by
H. F. Mark et al.
, 5, pp.
129
,
Wiley
, New York.
26.
Warholic
,
M. D.
,
Massah
,
H.
, and
Hanratty
,
T. J.
, 1999, “
Influence of Drag-Reducing Polymers on Turbulence: Effects of Reynolds Number, Concentration and Mixing
,”
Exp. Fluids
0723-4864,
27
, pp.
461
472
.
27.
Den Toonder
,
J. M.
,
Hulsen
,
M. A.
,
Kuiken
,
G. D. C.
, and
Nieuwstadt
,
F. T. M.
, 1997, “
Drag Reduction by Polymer Additives in a Turbulent Pipe Flow: Numerical and Laboratory Experiments
,”
J. Fluid Mech.
0022-1120,
337
, pp.
193
231
.
28.
Gampert
,
B.
,
Braemer
,
T.
,
Eich
,
T.
, and
Dietmann
,
T.
, 2003, “
Some Experimental Results on Laser Doppler Velocimetry (LDV and Birefringence (FIB) Studies of Non-Newtonian Fluids Flow through Rectangular Channels
,”
Proceedings of the 4th ASME/JSME Joint Fluids Engineering Conference
, Hawaii.
29.
Islam
,
M. T.
,
Vanapalli
,
S. A.
, and
Solomon
,
M. J.
, 2003, “
Inertial Effects on Polymer Chain Scission in Planar Elongational Cross-Slot Flow
,”
Macromolecules
0024-9297,
37
(
3
), pp.
1023
1030
.
30.
Virk
,
P. S.
, 1975, “
Drag Reduction Fundamentals
,”
AIChE J.
0001-1541,
21
, pp.
625
653
.
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