Modeling of Particulate Emissions
Abstract
Atmospheric levels of PM2.5 particulate matter near airports are increased by solid carbonaceous soot and condensable gaseous species emitted by military and commercial gas turbine aircraft engines. Carbonaceous materials are formed in the main combustor at elevated pressures and temperatures due to nucleation, surface growth, coalescence, aggregation and oxidation. Condensable materials nucleate in the engine exhaust plume at lower temperatures and at ambient pressures, followed by mass growth, and vaporization. Such gases may also condense onto existing soot emissions collocated in the plume. This presentation will review models developed to describe the formation of these two types of particulates and will compare and contrast the physics/chemistry associated with these processes and their interrelationships. Complicating the understanding the physics of formation for both the solid and volatile particles are sampling artifacts. A discussion of such issues will also be discussed briefly.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2011
- Accession Number
- ADA554492
Entities
People
- Med Colket
Organizations
- United Technologies Corporation