Predicting M4 Carbine Pollutant Emissions: Baseline Skeletal Finite-Rate Chemical Kinetics Mechanisms for Muzzle-Blast Modeling
Abstract
To create baseline chemical kinetics mechanisms for a computational fluid dynamics (CFD) model of M4 muzzle blast, the trial mechanism method was employed to reduce a full mechanism comprising 2751 elementary reactions and 813 species. The full mechanisms appropriateness for the application is discussed. Solutions to relevant homogeneous reactor problems based on skeletal mechanisms with as few as 22 reactions and 20 species yielded temperature and heat release rate versus time histories that well reproduced those produced with the full mechanism. Two candidates were recommended for use in the muzzle-blast CFD model: one with 22 reactions and 20 species, and one with 27 reactions and 22 species. All the inputs needed to construct them are provided in an addendum to this report (ARL-TN-1048). Targeting the establishment of better-designed screening protocols for future mechanism reduction efforts, recommendations for mapping the results of muzzle-blast simulations produced with these mechanisms are proffered.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2021
- Accession Number
- AD1124833
Entities
People
- Chiung-chu Chen
- John R. Schmidt
- Kevin L. McNesby
- Michael J. McQuaid
Organizations
- United States Army Research Laboratory