Based On Shock Tube Experiments Jet Blast Wave

In this thesis,a 2-d axial symmetric N-S equation was solved by using Steger-Warming Flux Splitting,MUSCL,B-L model and Finite Volume Method to simulate an experiment,which was to observe explosion phenomenon. By this kind of numeric simulation,the mechanism of the blast wave and the way it goes were obtained,which is extremely valuable both in further analysis of basic flow and in engineering application (e.g.,the research and development of ground facilities,the aerodynamic design of vehicle and protection engineering,etc.). First,a blast wave generator was numerically simulated to obtain the basic idea of the blast wave. Then,a shock tube experiment,which was to observe explosion phenomenon,was numerically simulated. This experiment was the basic of the thesis. From the numerical result,the pulse of the positive pressure and the negative pressure were clearly observed. By using a CFI( computational fluid imaging) soft,a nice hologram was obtained,which was useful to make comparison between the numerical result and the experiment result.