SOME TECHNIQUES OF EJECTING ADDITIVE SOLUTIONS FOR DRAG REDUCTION

Tests of slots (inclined, vertical, and shielded) and porous-type ejectors for introducing additive solutions into an aqueous boundary layer to reduce turbulent frictional resistance are reported. It was found that the slot ejector is better suited for dilute solutions, and that the porous ejector is better suited for concentrated solutions. Compared to the vertical and the shielded slots, the inclined slot introduces far less mixing between the ejected additive solution and the surrounding water. (Author)

• Corporate Authors:

  Hydronautics, Incorporated

  7210 Pindel School Road
  Laurel, MD  United States  20810
• Authors:
  • Wu, Jingxian
• Publication Date: 1971-2

Media Info

• Pagination: 27 p.

Subject/Index Terms

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

Filing Info

• Accession Number: 00016690
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TR-7101-1 Tech Rpt
• Contract Numbers: N00014-71-C-0063
• Files: TRIS
• Created Date: Aug 27 1971 12:00AM