Experimental study of the characteristics on turbulence in drag reducing flow using surfactant additives

P. W. Li, Y. Kawaguchi, A. Yabe, H. Daisaka, Koichi Hishida, M. Maeda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The phenomenon of drag reduction of turbulence water flow added with surfactant (CTAC+NaSal)was investigated experimentally in the work. The conditions of temperature, concentration of surfactant and Reynolds number that drag reduction may occur were studied. By using LDV, the turbulence properties of the flow in a two-dimensional channel were measured. It is concluded that the low drag of surfactant solution flow can be maintained at Reynolds numbers pertinent to turbulent flow of the case for water alone if the Reynolds number does not exceed a critical Reynolds number. The critical Reynolds number however increases with the surfactant concentration and decreases with increasing the temperature of the solution. Under drag reducing flow, the main velocity profile shifts its shape to that of a laminar flow however, still remains certain level of turbulent intensities although quite weak than that of water flow under the same Reynolds number. While there are turbulent intensities, the turbulent Reynolds stress is almost zero or even has depletion, which reflects the change of correlation of turbulence intensities in different directions in the flow.

Original languageEnglish
Pages (from-to)37-42
Number of pages6
JournalHsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
Volume35
Issue number1
Publication statusPublished - 2001 Jan
Externally publishedYes

Fingerprint

Drag
Reynolds number
Turbulence
Surface active agents
Drag reduction
Flow of water
Laminar flow
Turbulent flow
Water
Temperature

Keywords

  • Drag reduction
  • Surfactant additives
  • Turbulence characteristic

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Experimental study of the characteristics on turbulence in drag reducing flow using surfactant additives. / Li, P. W.; Kawaguchi, Y.; Yabe, A.; Daisaka, H.; Hishida, Koichi; Maeda, M.

In: Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University, Vol. 35, No. 1, 01.2001, p. 37-42.

Research output: Contribution to journalArticle

Li, P. W. ; Kawaguchi, Y. ; Yabe, A. ; Daisaka, H. ; Hishida, Koichi ; Maeda, M. / Experimental study of the characteristics on turbulence in drag reducing flow using surfactant additives. In: Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University. 2001 ; Vol. 35, No. 1. pp. 37-42.
@article{23cea4462d844748be0cf86658b8d907,
title = "Experimental study of the characteristics on turbulence in drag reducing flow using surfactant additives",
abstract = "The phenomenon of drag reduction of turbulence water flow added with surfactant (CTAC+NaSal)was investigated experimentally in the work. The conditions of temperature, concentration of surfactant and Reynolds number that drag reduction may occur were studied. By using LDV, the turbulence properties of the flow in a two-dimensional channel were measured. It is concluded that the low drag of surfactant solution flow can be maintained at Reynolds numbers pertinent to turbulent flow of the case for water alone if the Reynolds number does not exceed a critical Reynolds number. The critical Reynolds number however increases with the surfactant concentration and decreases with increasing the temperature of the solution. Under drag reducing flow, the main velocity profile shifts its shape to that of a laminar flow however, still remains certain level of turbulent intensities although quite weak than that of water flow under the same Reynolds number. While there are turbulent intensities, the turbulent Reynolds stress is almost zero or even has depletion, which reflects the change of correlation of turbulence intensities in different directions in the flow.",
keywords = "Drag reduction, Surfactant additives, Turbulence characteristic",
author = "Li, {P. W.} and Y. Kawaguchi and A. Yabe and H. Daisaka and Koichi Hishida and M. Maeda",
year = "2001",
month = "1",
language = "English",
volume = "35",
pages = "37--42",
journal = "Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University",
issn = "0253-987X",
publisher = "Xi'an Jiaotong University",
number = "1",

}

TY - JOUR

T1 - Experimental study of the characteristics on turbulence in drag reducing flow using surfactant additives

AU - Li, P. W.

AU - Kawaguchi, Y.

AU - Yabe, A.

AU - Daisaka, H.

AU - Hishida, Koichi

AU - Maeda, M.

PY - 2001/1

Y1 - 2001/1

N2 - The phenomenon of drag reduction of turbulence water flow added with surfactant (CTAC+NaSal)was investigated experimentally in the work. The conditions of temperature, concentration of surfactant and Reynolds number that drag reduction may occur were studied. By using LDV, the turbulence properties of the flow in a two-dimensional channel were measured. It is concluded that the low drag of surfactant solution flow can be maintained at Reynolds numbers pertinent to turbulent flow of the case for water alone if the Reynolds number does not exceed a critical Reynolds number. The critical Reynolds number however increases with the surfactant concentration and decreases with increasing the temperature of the solution. Under drag reducing flow, the main velocity profile shifts its shape to that of a laminar flow however, still remains certain level of turbulent intensities although quite weak than that of water flow under the same Reynolds number. While there are turbulent intensities, the turbulent Reynolds stress is almost zero or even has depletion, which reflects the change of correlation of turbulence intensities in different directions in the flow.

AB - The phenomenon of drag reduction of turbulence water flow added with surfactant (CTAC+NaSal)was investigated experimentally in the work. The conditions of temperature, concentration of surfactant and Reynolds number that drag reduction may occur were studied. By using LDV, the turbulence properties of the flow in a two-dimensional channel were measured. It is concluded that the low drag of surfactant solution flow can be maintained at Reynolds numbers pertinent to turbulent flow of the case for water alone if the Reynolds number does not exceed a critical Reynolds number. The critical Reynolds number however increases with the surfactant concentration and decreases with increasing the temperature of the solution. Under drag reducing flow, the main velocity profile shifts its shape to that of a laminar flow however, still remains certain level of turbulent intensities although quite weak than that of water flow under the same Reynolds number. While there are turbulent intensities, the turbulent Reynolds stress is almost zero or even has depletion, which reflects the change of correlation of turbulence intensities in different directions in the flow.

KW - Drag reduction

KW - Surfactant additives

KW - Turbulence characteristic

UR - http://www.scopus.com/inward/record.url?scp=0034870490&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034870490&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0034870490

VL - 35

SP - 37

EP - 42

JO - Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University

JF - Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University

SN - 0253-987X

IS - 1

ER -