- Author
-
Miller, J. H.
- Title
- Experimental and Modeling Studies of Soot and Carbon Monoxide in an Ethylene/Air Diffusion Flame. Final Report. September 1, 1993-December 31, 1994.
- Coporate
- George Washington Univ., Washington, DC
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
Final Report
August 31, 1994
36 p.
- Contract
- NIST-GRANT-60NANB2D1292
- Keywords
-
diffusion flames
|
soot
|
carbon monoxide
|
ethylene
|
flame structure
|
oxidation
|
combustion products
|
temperature
|
stochiometry
- Abstract
- George Washington University held a grant from the Building and Fire Research Laboratory of the National Institute of Standards and Technology from September 1, 1993 through December 31, 1994. The grant had two goals. The first was to explore the validity of the conserved scalar approximation to diffusion flame structures. This work resulted in two short written reports (which have been attached to prior quarterly reports for this grant) as well as several oral presentations at conferences. We have also extended the scope of this theoretical work to include an experimental project: the use of fuel-additives as tracers for mixture fraction, a conserved scalar often used in modeling of turbulent, non-premixed flames. The second goal featured a new experimental program to study soot oxidation, and carbon monoxide formation in combustion product streams as a function of temperature and overall stoichiometry. It is know that copious quantities of carbon monoxide are formed in room fires after flashover. While chemical models for the gas phase chemistry that occurs have been applied to this problem, no clear understanding exists for the heterogeneous chemistry of particulate carbon burning in upper layers of burning rooms. The experiment which we have designed and built will address this data deficiency.