THE EFFECTS OF A DRAG REDUCING POLYMER ON THE TURBULENT BOUNDARY LAYER OF A SUBMERGED FLAT PLATE

The primary objective of an experimental investigation was to study the effect that a drag-reducing polymer has on the turbulent boundary layer of a submerged flat plate using a Laser-Doppler flowmeter. Data are presented showing the time effects caused by polymer solution drag-reduction degradation on the mean velocity and axial fluctuating-velocity profiles. The importance of the data is that it provides a connection between the apparently diverse results reported previously for the velocity profiles at conditions of high and low drag-reduction effectiveness. The polymer molecules' effect on the boundary layer structure is apparently progressively restricted to the near wall region with decreasing drag reduction in agreement with the mean velocity profiles. (Author)

• Corporate Authors:

  Notre Dame University

  College of Engineering
  Notre Dame, Indiana,   United States  46556
• Authors:
  • Kumor, S M
  • Sylvester, N D
• Publication Date: 1973-1

Media Info

• Pagination: 121 p.

Subject/Index Terms

• TRT Terms: Additives; Boundary layer; Drag; Polymers; Turbulence; Turbulent boundary layer; Velocity
• Old TRIS Terms: Drag reduction; Polymer additives; Polymer degradation; Velocity profiles
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00044643
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: UND-73-1 Tech Rpt
• Contract Numbers: N0014-68-A-0152
• Files: TRIS
• Created Date: Sep 4 1973 12:00AM