超音速冲击水锤动力学模型及数值模拟

Dynamic Model and Simulation of Supersonic-speed-jet Hammer

建立了超音速冲击水锤的动力学模型并进行了数值模拟,结果表明超音速水流离开喷嘴后其速度和压力均急剧衰减.当接近冲击面时,在滞点附近的冲击速度及压力最大.所以在冲击力作用下混凝土最先在滞点附近发生冲蚀破坏.

A dynamic model of supersonic-speed-jet hammer was developed to simulate the process of high speed jetting.The result indicates that the speed and pressure of supersonic-speed-jet go down rapidly after leaving nozzle.As the jet approaches the surface of road,the impact speed and pressure at staff point are the max.So concrete near staff point will be destroyed firstly under supersonic-speed-jet.