Nonlinear Spectroscopy of Multicomponent Droplets and Two- and Three-Dimensional Measurements in Flames.
Abstract
Significant progress has been made in the following two research areas: (1) Nonlinear spectroscopy of micrometer-sized multicomponent droplets; and (2) Two- and three-dimensional scalar and velocity mapping. Optical diagnostics that have the potential of providing information on chemical species and temperature of multicomponent liquid droplets have been developed. A brief summary of the research accomplishments in the following three areas: (1) droplet temperature determination with thermochromic dyes; (2) enhancement of stimulated Raman scattering from droplets for identifying chemical species; and (3) modification of droplet lasing characteristics by injection seeding and Q-switching. Progress has been made in developing and applying a technique for obtaining mixture fraction and scalar dissipation in a variety of turbulent nonpremixed flames. The data from these experiments are of use for modeling these complex systems. In premixed flames, simultaneous velocity/scalar images were obtained, along with full three-dimensional gradient and OH information.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 22, 1997
- Accession Number
- ADA326207
Entities
People
- Marshall B. Long
- Richard K. Chang
Organizations
- Yale University