Plane shock compression generators, utilizing convergence of conical shock waves

18th APS-SCCM; 24th AIRAPT

Nikolaev, D.^1 ; Ternovoi, V.^1 ; Kim, V.^1 ; Shutov, A.^1

Institute of Problems of Chemical Physics RAS, Chernogolovka

142432, Russia^1

关键词: Conical geometry;    Cylindrical cavities;    Experimental testing;    Mach reflection;    Multi-points;    Shock compressions;    Shock wave generator;    Sliding detonations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/14/142026/pdf
DOI  :  10.1088/1742-6596/500/14/142026

来源: IOP

【 摘 要 】

The results of experimental testing of shock wave generators, based on irregular Mach reflection of shock waves in a conical geometry, along with the results of numerical simulation is presented. The shock in a layered cylindrical central body was produced by an impact of a converging conical flyer plate. Conical flyer plate was originating from initially cylindrical cavity liner in a cylindrical HE charge that was launched by a sliding detonation. This approach led to device simplification, since manufacturing of conical parts from metal and explosive is not required. The sequential detonation of HE charge by a multi- point distributor was employed to vary the geometry of formed conical flyer. The dependence of parameters of shock wave in cylindrical Polymethylmethacrylate (PMMA) core on launch angle was investigated. It was found that launch angles below 10° lead to failure of the Mach reflection mode, while larger angles produced flat Mach disks that can be utilized in various shock experiments.