Accession Number:

ADA394530

Title:

Mixing, Chemical Reactions, and Combustion in Subsonic and Supersonic Turbulent Flows

Descriptive Note:

Final rept. 1 Oct 1997-30 Nov 2000

Corporate Author:

CALIFORNIA INST OF TECH PASADENA GRADUATE AERONAUTICAL LABS

Report Date:

2001-02-28

Pagination or Media Count:

49.0

Abstract:

Research conducted under sponsorship of this grant focused on fundamental investigations of mixing, chemical-reaction, and combustion processes, in turbulent, subsonic, and supersonic flows. Research on hydrocarbon-combustion extended previous work highlighting deficiencies in existing chemical-kinetics models for ethylene combustion. Experiments in the 2- and 3-D structure and mixing of turbulent transverse jets yielded new results on isotropy and Reynolds number effects. Work in high-speed flows and subsonic-diffusers demonstrated considerable control via mass injection. Direct numerical simulations of Rayleigh-Taylor instability flows attained the highest Reynolds numbers to date yielding results on mixing and over-all growth rates. Image Correlation Velocimetry was applied to free jets and OH-tagged lines. Advances in high-performance digital-imaging systems were implemented, permitting high frame-rate and high-resolution multi-dimensional data acquisition in many of the experiments.

Subject Categories:

  • Fluid Mechanics
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE