摘要
该文利用高低压火炮发射火药运载器研究动态条件下低温火药的破碎规律，得到了不同颗粒间应力条件下火药破碎程度关系式。在此基础上建立了考虑火药破碎的一维多相流数学模型，对高密实低温火药的燃烧过程进行了数值预测，并与不考虑破碎的数值结果进行了对比。数值结果揭示了低温破碎引起异常压力，对研究高膛压火炮的膛炸机理有重要意义。
By launching a specially designed vessel filled with granular propellants by a high low pressure gun, dynamic grain fracture caused by intergranular compression at low temperature is investigated, and fracture degree along with intergranular stress is also obtained. Based on this, burning process in highly loaded propellant beds at low temperature is numerically simulated considering different break up particles conservation. A comparison is made between both considering and not considering fracture. The burning phenomena of broken propellants is like that of DDT. It plays an important role in investigating the abnormal pressure in high pressure guns.
出处
《南京理工大学学报》
EI
CAS
CSCD
1998年第2期165-168,共4页
Journal of Nanjing University of Science and Technology
基金
国家自然科学基金
关键词
破碎
火药
数值模拟
异常燃烧
火炮
breakup, gun propellant, numerical prediction, abnormal burning
