Model for Liquid Boron Oxide Droplet Gasification in H/O/C/F Combustion Environments
Abstract
This report presents a model for the gasification of liquid boron oxide droplet in high temperature H/O/C/F environments. The model includes a detailed gas phase reaction mechanism, multi-component molecular diffusion, and heterogeneous gas-surface reactions, The gas phase reaction mechanism consists of 103 reversible reactions for H/O/C, B/H/O/C and B/H/O/C/F combustion systems. The surface reactions include processes that are first order in gas phase reactants and are thermodynamically competitive with vaporization. Model results are presented that illustrate the effect of variations in droplet diameter, gas phase temperature, composition, and oxygen to fluorine mole ratio. In addition, the model calculations are analyzed with reaction flux and gradient sensitivity analysis to determine the fastest and rate-limiting steps. Model results for several calculations indicate that the addition of fluorine accelerates the gasification process relative to B/H/O/C systems. The degree of enhancement, however, depends upon the temperature and composition of the surrounding gas and the droplet diameter. Boron, Kinetic model, Sensitivity analysis, Combustion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1993
- Accession Number
- ADA272911
Entities
People
- C. E. Kolb
- F. L. Dryer
- H. Rabiitz
- R. A. Yetter
- R. C. Brown
Organizations
- Aerodyne Research