Level set method was used in this paper to attain burning surface variety regulation of arbitrary configuration grain by tracing interface of grain surface burnback . the work of this thesis can be summaried as follow : 1 本文运用等值面函数法( levelset ) ，追踪固体推进剂燃烧界面的变化，从而获得了任意结构型面装药的燃面变化规律，本文的主要工作及创新点概括如下： 1
2.
The software that can calculate 3d complicated grain was developed . a code based on particularity of grain burnback was optimized to improve efficiency . the software has high calculation precision . convenient and speedy and it has been proved in engineering application . this work can provide a foundation for coupling grain burnback process to srm chamber flowfield numerical simulation 编制了三维复杂装药燃面的计算程序及应用界面，并根据燃面计算的特殊需要，对算法进行了优化，从而提高了计算效率，达到了工程计算快速、简捷、精确的目的，为进一步开展装药燃烧与发动机内流场数值模拟耦合计算打下了基础。
