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Drag reduction induced by polymer in turbulent pipe flows

Journal Article


Abstract


  • This paper deals with the velocity distribution and friction factor of polymer drag reducing flows in smooth pipes. By applying the concept of elastic shear stress or the Reynolds shear stress deficit, the equations of velocity distribution and friction factor in turbulent drag reducing flows are derived. Based on the derived equations, the onset Reynolds number for drag reduction is discussed which shows that the onset of drag reduction depends on the polymer type and its concentration. The optimal polymer concentration for Maximum Drag Reduction (MDR) is obtained, and it depends only on the polymer species. The effect of polymer mechanical degradation is discussed in the current paper.

Publication Date


  • 2013

Citation


  • Yang, S. & Ding, D. (2013). Drag reduction induced by polymer in turbulent pipe flows. Chemical Engineering Science, 102 200-208.

Scopus Eid


  • 2-s2.0-84882963098

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1358

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 200

End Page


  • 208

Volume


  • 102

Place Of Publication


  • United Kingdom

Abstract


  • This paper deals with the velocity distribution and friction factor of polymer drag reducing flows in smooth pipes. By applying the concept of elastic shear stress or the Reynolds shear stress deficit, the equations of velocity distribution and friction factor in turbulent drag reducing flows are derived. Based on the derived equations, the onset Reynolds number for drag reduction is discussed which shows that the onset of drag reduction depends on the polymer type and its concentration. The optimal polymer concentration for Maximum Drag Reduction (MDR) is obtained, and it depends only on the polymer species. The effect of polymer mechanical degradation is discussed in the current paper.

Publication Date


  • 2013

Citation


  • Yang, S. & Ding, D. (2013). Drag reduction induced by polymer in turbulent pipe flows. Chemical Engineering Science, 102 200-208.

Scopus Eid


  • 2-s2.0-84882963098

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1358

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 200

End Page


  • 208

Volume


  • 102

Place Of Publication


  • United Kingdom