VORTEX INTERACTIONS AND DECAY IN AIRCRAFT WAKES

The dynamic interaction of aircraft wake vortices was investigated using both inviscid and viscous models. For the viscous model, a computer code was developed using a second-order closure model of turbulent transport. The phenomenon of vortex merging which results in the rapid aging of a vortex wake was examined in detail. It was shown that the redistribution of vorticity during merging results from both convective and diffusive mechanisms.

• Corporate Authors:

  Aeronautical Research Associates of Princeton

  50 Washington Road, P.O. Box 2229
  Princeton, NJ  United States  08540
• Authors:
  • Bilanin, A J
  • Teske, M E
  • Dupdonaldson, C
  • Williamson, G G
• Publication Date: 1977-9

Media Info

• Pagination: 121 p.

Subject/Index Terms

• TRT Terms: Aircraft; Atmospheric diffusion; Computer programs; Convection (Fluid mechanics); Dissipation; Mathematical models; Turbulence; Viscous flow; Vortices; Wakes
• Uncontrolled Terms: Models
• Old TRIS Terms: Turbulent diffusion
• Subject Areas: Aviation; Energy; Vehicles and Equipment;

Filing Info

• Accession Number: 00174567
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NASA-CR-2870 Final Rpt.
• Contract Numbers: NAS1-13939
• Files: TRIS
• Created Date: Mar 14 1978 12:00AM