摘要
采用中心有限体积法进行空间离散和四步Runge—Kutta显式推进方法进行时间推进数值求解了非定常欧拉方程;采用Delaunay方法生成内埋式弹舱舱盖打开时的非结构网格。数值模拟了内埋式轰炸机弹舱单开舱门在分别打开8°和45°时的复杂流场。通过对上述复杂流场的分析,发现作用于舱门的气动载荷具有使其趋向于关闭的特性,且有随打开角度的增大而减小的趋势。
Equations were solved using the cell- centered finite volume spatial discretization and four- stage Runge -kutta time-stepping scheme on unstructured mesh with standard convergence acceleration techniques such as local time stepping and implicit residual smoothing. The flow fields for the bomb carrier interior weapon cabin at different states （the open -up angles of interior weapon cabin＇s doors are 8 degree and 45 degree separately） are simulated. The aerodynamic loads to act on interior weapon cabin＇s doors can make them close-up. The aerodynamic loads are inequable at the different open-up angles of interior weapon cabin＇s doors. The results are logical and authentic.
出处
《航空计算技术》
2007年第3期5-6,16,共3页
Aeronautical Computing Technique
基金
国家自然科学基金重点项目(10432040)
航天科技创新基金重点项目(CASC0111)
中国博士后基金(20060401013)
航空科学基金(04A53006)
关键词
欧拉方程
有限体积法
非结构网格
内埋式弹舱
euler equations
unstructured mesh
aerodynamic loads
interior weapon cabin
