- Author
- Carrier, G. F. | Fendell, F. E. | Hus, C. T. | Stonich, I. L. | Bergerson, L. D.
- Title
- Basic Research in Flame Radiation. Final Report. August 1986-February 1991.
- Coporate
- TRW Space and Technology Group, Redondo Beach, CA
- Sponsor
- Gas Research Institute, Chicago, IL
- Report
- GRI-91/0091; TRW S/N 48027, February 1991, 52 p.
- Distribution
- Available from National Technical Information Service
- Contract
- 5086-260-1415
- Keywords
- flame radiation | flame research | soot
- Identifiers
- rates of inception; collisional aggregation
- Abstract
- A rapid-compression facility has been devised for measuring the rates of inception, growth, and collisional aggregation of soot in hydrocarbon/inert-gas (especially, methane/inert-gas) mixtures over a range of temperatures (1300 K - 2300 K) over a range of pressures (up to 4 MPa). The facility is designed to maintain thermodynamic states in the above-cited, soot-producing range for a temporal interval on the order of 100 ms. The preselected test sample is compressed from its initial volume into a subvolume owing to the rapid transit of a long gun barrel (~2.75 m) by a gas-driven piston, which is in the shape of a frustum of a cone joined to a cylindrical afterbody. More precisely, a cylindrical nose piece is added on to the downwind end of the frustum, so that the test sample is ensconsed in the test section with only moderate sample churning and without any piston bounce. The temperature history in time is inferred from the measured variation of pressure in time. In turn, the mass of soot is inferred as a function of time, and the assignment of parameters in an empirical expression for the rate of soot formation then follows. Systematic data collection has been initiated.