MOLECULAR MIXING LENGTHS FOR TURBULENT WAKES
AVCO EVERETT RESEARCH LAB INC EVERETT MA
Pagination or Media Count:
A simplified analysis is performed of the turbulent mixing of a trace chemical species with the bulk chemical species. The general relationship between the mixing on a molecular scale and the concentration fluctuation intensity of the trace species is given. This is then applied to a turbulent wake, to determine the axial length that it takes for ingested gas to become mixed. The results are sensitive to the assumed turbulent dissipation rate giving values of the mixing length from the order of the wake radius to two orders of magnitude larger.
- Fluid Mechanics
- Atomic and Molecular Physics and Spectroscopy