Experimental study on the interaction between explosion shock wave and water film
An experimental platform for the interaction between shock wave and water film is built based on horizontal shock tube in order to study the interaction between explosion shock wave and water film.A water film generator is designed in this study,which can produce stable water film with thickness of 8 mm.The interaction between the incident shock waves of Ma= 1.31 and Ma= 1.42 with the water film at the distance from the nozzle 45,55 and 65mm has been studied.The interaction between the shock wave and the water film was visualized using a schlieren and a high-speed camera.The pressure and impulse changes at the front and rear 20 mm of the water film are recorded by a pressure test system.The results reveal that the pressure change in front of the water film depends on the reflection of the shock wave,and the reflection wave generated by the water film is lower than that generated by a rigid-solid wall.The pressure change behind the water film depends on the energy absorbed by the impacted water film when it breaks,and this energy is mainly derived from the high-speed airflow behind the shock wave,rather than from the shock wave itself.The enhancement effect of the peak pressure can reach more than 50%.The enhancement effect of impulse can reach more than 10 times.The farther the water membrane is from the nozzle,the stronger the enhancement effect on the peak pressure and the weaker the enhancement effect on the impulse.
water filmexplosion wavepeak pressureimpulsedistance from water film to pipe mouth
万方数据
维普
