固体推进剂燃烧断裂边界二维流场特性

CHARACTERISTICS OF 2 D FLOW FIELDS ON COMBUSTION FRACTURE BOUNDARY IN SOLID PROPELLANT

关键词:  固体火箭推进剂  推进剂燃烧  裂纹扩展  二维流  流场仿真

Key words:  Solid rocket propellant  Propellant combustion  Crack propagation  Two demensional flow  Flow field simulation

摘要:

在高温、高压的对流燃烧条件下，固体推进剂的断裂扩展是一个十分复杂的非线性非平衡不可逆的热力学耦合过程，裂纹对流燃烧流场与裂纹的变形、扩展之间存在着强耦合作用。以二维粘流Ｎ－Ｓ方程着重模拟了固体推进剂燃烧断裂边界二维流场特性，并和一维结果进行比较，全面展示了燃烧断裂动力学边界的时变特性，为燃烧断裂扩展模式的后续研究提供参考。

Abstract:

Under the condition of high pressure and high temperature gas flow field,the combustion fracture propagation in solid propellant was a nonlinear,nonequilibrium and irreversible thermodynamic coupling process.A strong coupling existed between the deformation,propagation and convective combustion flow field of the crack.The characteristics of 2 D flow fields were simulated using 2 D viscous N S equations on the boundary of combustion fracture in solid propellant.The results were compared with those of one dimensional equations.It’s helpful for researches of combustion fracture propagation models