aortography

The flow fields both in gas and dusty bulk and the entrained dust cloud induced by interactions of shock waves and a surface of dusty bulk were record,by means of shadow graphs and pulsed X ray shadow graphs with trace particles.

实验中利用带示踪粒子的X光脉冲摄影和阴影摄影技术 ,成功拍摄了激波与堆积粉尘作用后粉尘内部的波系图像和波后卷扬粉尘云的形状 ,进而测得入射激波倾斜角、透射激波倾斜角和波后物质界面折射角。

Four groups of photos under different ignition systems were obtained, and these photos were manipulated with digital image manipulation technology.

本文就利用由多幅脉冲X光摄影技术所获得的四种不同点火条件下的火炮膛内火药颗粒群运动状况的阴影照片，进一步利用数字图像处理的技术及相关算法，编制软件对照片进行了处理，统一了照片的灰度，最终在定量上获得了不同点火条件下的火药颗粒的密度分布规律、弹丸和示踪药粒的运动速度以及在考虑到弹丸运动的前提下的火药颗粒与弹丸的撞击速度。