Comparison of turbulent boundary layer modifications with slot-injected and homogeneous drag-reducing polymer solutions

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17 Citations (Scopus)

Abstract

The effects of homogeneous drag-reducing polymer solution on a turbulent boundary layer are compared to the effects observed with slot-injected polymer. The comparison includes velocity profile statistics and drag reduction estimates. Vertical velocity fluctuations and Reynolds shear stresses are substantially reduced in both cases but these effects are restricted to y/δ* < 3 for slot-injected polymer. Homogeneous polymer effects are noticeable across the boundary layer. In spite of these differences, modifications to the near wall region of the boundary layer appear similar and estimates of the maximum local fractional drag reductions are near 0.7 in both cases.

Original languageEnglish (US)
Pages (from-to)205-208
Number of pages4
JournalAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
Volume237
StatePublished - 1996

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Polymer solutions
Drag
Boundary layers
Drag reduction
Polymers
Shear stress
Statistics

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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title = "Comparison of turbulent boundary layer modifications with slot-injected and homogeneous drag-reducing polymer solutions",
abstract = "The effects of homogeneous drag-reducing polymer solution on a turbulent boundary layer are compared to the effects observed with slot-injected polymer. The comparison includes velocity profile statistics and drag reduction estimates. Vertical velocity fluctuations and Reynolds shear stresses are substantially reduced in both cases but these effects are restricted to y/δ* < 3 for slot-injected polymer. Homogeneous polymer effects are noticeable across the boundary layer. In spite of these differences, modifications to the near wall region of the boundary layer appear similar and estimates of the maximum local fractional drag reductions are near 0.7 in both cases.",
author = "Petrie, {H. L.} and Fontaine, {Arnold Anthony}",
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T1 - Comparison of turbulent boundary layer modifications with slot-injected and homogeneous drag-reducing polymer solutions

AU - Petrie, H. L.

AU - Fontaine, Arnold Anthony

PY - 1996

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N2 - The effects of homogeneous drag-reducing polymer solution on a turbulent boundary layer are compared to the effects observed with slot-injected polymer. The comparison includes velocity profile statistics and drag reduction estimates. Vertical velocity fluctuations and Reynolds shear stresses are substantially reduced in both cases but these effects are restricted to y/δ* < 3 for slot-injected polymer. Homogeneous polymer effects are noticeable across the boundary layer. In spite of these differences, modifications to the near wall region of the boundary layer appear similar and estimates of the maximum local fractional drag reductions are near 0.7 in both cases.

AB - The effects of homogeneous drag-reducing polymer solution on a turbulent boundary layer are compared to the effects observed with slot-injected polymer. The comparison includes velocity profile statistics and drag reduction estimates. Vertical velocity fluctuations and Reynolds shear stresses are substantially reduced in both cases but these effects are restricted to y/δ* < 3 for slot-injected polymer. Homogeneous polymer effects are noticeable across the boundary layer. In spite of these differences, modifications to the near wall region of the boundary layer appear similar and estimates of the maximum local fractional drag reductions are near 0.7 in both cases.

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M3 - Review article

VL - 237

SP - 205

EP - 208

JO - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED

JF - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED

SN - 0888-8116

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