Development and Validation of Detailed Finite-Rate Chemical Kinetics Mechanisms for Modeling the Combustion of 1,3,5,7-Tetranitro 1,3,5,7- Tetrazocane---Hydroxyl-Terminated Polybutadiene (HMX-HTPB) Composites
Abstract
The trial mechanism method (TMM) was employed to reduce a large (3825 reaction-1017 species) finite-rate chemical kinetics mechanism for modeling the gas-phase combustion associated with the deflagration of 1,3,5,7-tetranitro-1,3,5,7-tetrazocanehydroxyl-terminated polybutadiene (HMXHTPB) composites. Targeting the creation of skeletal mechanisms for use in a 2-D laminate computational fluid dynamics model of such phenomena, the TMMs screening protocol compared results from solutions to homogeneous reactor problems. The candidate selected for the application comprised 135 reactions and 117 species. Its selection was based in part on burning rate predictions for pure HMX produced with a 1-D steady laminar (CYCLOPS) deflagration model into which it was integrated. Beyond providing evidence for the candidates validity for the intended application, results produced with it indicated that HMXs burning rate at a given pressure was relatively independent of the temperature of the burning surface. As such, they call into question using representations for the condensed-phase-to-gas-phase conversion process that are formulated solely on that basis. The CYCLOPS models predictions for the burning rate of a hypothetical homogeneous HMXHTPB mixture provided additional evidence for the candidates validity for the application. All the inputs needed to construct the candidate are provided in an addendum (ARL-TN-1061) to this report.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2021
- Accession Number
- AD1134505
Entities
People
- Chiung-chu Chen
- Jeffrey D . Veals
- Michael J. McQuaid
Organizations
- United States Army Combat Capabilities Development Command