ATLANTIS CRUISE =260, 11 OCTOBER-7 NOVEMBER 1960
Abstract
DESCRIPTORS: *Flmes, *Flame propagation, *Turbulence, *Tubulent flow, Air, Fuels, Mixtures, Velocity, Test methods, High speed photography, Gases. Investigation verified the concept that the effect of turbulence on flames is only to wrinkle and extend the surface of the flame front. Flash-tube photographs show the instantaneous flame front to be a thin wrinkled continuous boundary between unburned and burned gases. All experimental measurements and the propagation of wrinkles in the high-speed motion picture substantiate this. Results definitely indicate that the ratio of local turbulent flame velocity to the laminar flame velocity, can be correlated with a dimensionless time parameter, and the dimensionless turbulence intensity in the approach flow. A useful technique was developed and verified for determination for a turbulent flame of the mean flow field in the neighborhood of the flame, the mean flame front, the rootmean-square displacement of the mean flame front, the local turbulent flame velocity, and the position of the instantaneous flame front. A technique was developed for following the formation and growth of wrinkles in the instantaneous flame front. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1962
- Accession Number
- AD0287792
Entities
People
- Richard M. Pratt
Organizations
- Woods Hole Oceanographic Institution