火炸药学报2016，Vol.39Issue(5)：93-98,6.DOI:10.14077/j.issn.1007-7812.2016.05.015
窄通道杆状发射药内孔燃气流动数值模拟
Numerical Simulation of Combustion Gas Flow inside Perforations of StickGun Propellant with Narrow Channels
摘要
Abstract
The flow model of combustion gas inside the perforation of stick gun propellant with narrow channel was established using reasonable simplifying assumptions. The numerical simulation of flow process of combustion gas inside the perforation of particular stick gun propellant with single perforation and length to diameter ratio (L/D) as 40 was carried out by solver in Fluent software. The velocity distribution and pressure distribution of combustion gas inside the perforation were simulated and analyzed under the conditions of given initial pressure and temperature. The results show that the flow velocity of combustion gas in the radial direction decreases gradually and the pressure increases from hole center to hole wall;In the axial direction, the velocity decreases and the pressure increases first, then the shock waves are suddenly formed at 10mm and transmitted along the axial direction with time, and tend to be stable after 5s. The pressure gradually increases and tends to be stable eventually.关键词
杆状发射药/侵蚀燃烧/数值模拟/CFD软件/渐增性燃烧Key words
stick gun propellant/erosion burning/numerical simulation/CFD software/progressive combustion分类
军事科技引用本文复制引用
唐乾森,肖正刚..窄通道杆状发射药内孔燃气流动数值模拟[J].火炸药学报,2016,39(5):93-98,6.基金项目
燃烧与爆炸技术重点实验室基金项目(9140C350202130C35122) （9140C350202130C35122）
工信部自主科研专项 （）
