摘要
采用NND2M差分格式 ,从考虑k-ε湍流模型的理想气体三维薄层近似NS方程出发 ,对塞式喷管内外流场以及比冲随高度变化特性进行了数值研究 ,得到了较为准确的结果。计算表明 ,塞式喷管的低空性能明显优于传统喷管 ,NND2M差分格式及相应计算软件适合于模拟复杂喷流流场 ,可用于塞式喷管发动机的研究中。
Numerical study of plug nozzle flow field and thrust characteristic was completed based on 3 D TLA NS equations with NND2M scheme. Calculations were performed under ideal, perfect gas assumptions. Turbulence was taken into account with a k ε turbulence model. The results show a significant performance increases at the sea level compared with the bell nozzle. They also show that NND2M scheme is fit for numerical simulation of complex jet flow.
出处
《国防科技大学学报》
EI
CAS
CSCD
2000年第4期1-4,共4页
Journal of National University of Defense Technology
基金
国家 8 63高技术项目资助! ( 863 2 1 4 2 )
关键词
塞式喷管
数值研究
NS方程
k-ε模型
plug nozzle
numerical study
NS equations
k-ε turbulence model
