Abstract
According to main problems in the development of the shock wave experiment apparatus used for the model test research of explosion doors, a series of CFD simulations were performed to look for approaches of improving of the apparatus. The results of simulation of the non-diaphragm mode show that the strength of shock waves generated by the apparatus can be improved to different extent with a variety of ways, such as increasing the operating pressure of the air cannon, decreasing the diameter of the driven section and increasing the diameter of the blow pipe, and that the most feasible approach to increase the strength of shock waves is adopting the two methods of increasing the diameter of the blow pipe and decreasing the diameter of the driven section together. The results of simulation of the diaphragm mode show that the forming of the shock wave is a result of the overlap of two pressure waves. These research results plays a important role in promoting and improving the apparatus, and are very valuable to study issues relevant to air cannons.
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