Coupling micro and meso-scale combustion models of AP/HTPB propellants

被引:54
|
作者
Gross, Matthew L. [1 ]
Hedman, Trevor D. [2 ]
Son, Steven F. [2 ]
Jackson, Thomas L. [3 ]
Beckstead, Merrill W. [4 ]
机构
[1] USN, Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA
[2] Purdue Univ, Maurice J Zucrow Labs, W Lafayette, IN 47906 USA
[3] Univ Illinois, Urbana, IL 61801 USA
[4] Brigham Young Univ, Provo, UT 84602 USA
关键词
Ammonium perchlorate; Hydroxyl-terminated polybutadiene; Solid propellants; Combustion modeling; Multi-scale coupling; COMPOSITE PROPELLANTS; AMMONIUM-PERCHLORATE;
D O I
10.1016/j.combustflame.2013.01.016
中图分类号
O414.1 [热力学];
学科分类号
摘要
Combustion simulations at the micro and meso-scales are coupled to give a more theoretically based and accurate description of AP (ammonium perchlorate)/HTPB (hydroxyl-terminated polybutadiene) composite propellant combustion. One and two-dimensional micro-scale combustion models of AP and AP/HTPB, which include detailed kinetics and species transport, are utilized to define semi-global kinetics for a meso-scale propellant combustion model capable of representing the complex morphology of an actual propellant. The AP/HTPB flame structure predicted with the micro-scale models is separated into four flames. Each flame is represented with a single reaction, thus a new four-step kinetic mechanism is implemented into the meso-scale model. Physical and kinetic parameters are determined with the micro-scale models. The meso-scale model is calibrated and validated with the micro-scale models to ensure the correct flame structure, as a function of pressure and AP particle sizes, is recreated with the four-step mechanism. The primary focus of this work is to outline the methodology used to couple the two numerical scales. Results of the meso-scale model are compared with the previous empirically-parameterized meso-scale model results and experimental data. Predictions are within 10% of experimental values for a range of AP/HTPB propellants. Published by Elsevier Inc. on behalf of The Combustion Institute.
引用
收藏
页码:982 / 992
页数:11
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