SUPPRESSED DIFFUSION OF DRAG-REDUCING POLYMER IN A TURBULENT BOUNDARY LAYER

The concentration of drag-reducing polymer ejected from a thin wall slot into a developing turbulent boundary layer (external flow) was measured with a laser-phototransistor unit. Experiments included tests of ejecting polymer solutions of various concentrations at various ejection rates. The polymer solution was colored with dye and the additive concentration within the boundary layer was deduced from the dye concentration, which attenuated the laser light received by the phototransistor. The results indicate a suppressed turbulent diffusion of polymer solution.

• Corporate Authors:

  American Institute of Aeronautics and Astronautics

  1290 Avenue of the Americas
  New York, NY  United States  10019
• Authors:
  • Wu, Jingxian
• Publication Date: 1972-1

Media Info

• Features: References;
• Pagination: p. 46-50
• Serial:
  • Journal of Hydronautics
  • Volume: 6
  • Issue Number: 1
  • Publisher: American Institute of Aeronautics and Astronautics

Subject/Index Terms

• TRT Terms: Additives; Atmospheric diffusion; Drag; Injection molding; Polymers; Turbulence
• Old TRIS Terms: Drag reduction; Polymer additives; Polymer ejection systems; Turbulent diffusion
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00032138
• Record Type: Publication
• Source Agency: American Institute of Aeronautics and Astronautics
• Files: TRIS
• Created Date: Apr 21 1972 12:00AM