Water Gel Barrier 표면형상의 크기에 따른 폭발특성

Experimental investigations were carried out to examine the explosion characteristics by different sizes in the wall surface shape of a water gel barrier in an explosion chamber, 1,600 mm in length with a square cross-section of 100 × 100 mm2. The sizes in the wall surface shape were varied by using water gel barriers with a cross-section of 100 × 200 mm2 and its were varied in the bottom of the chamber away 300, 700and 1,100 mm, respectively from the closed end of the chamber. The flame propagation images were photographed with a high speed camera and the pressure was recorded using a pressure transducer and a data acquisition system. It was found that as the size of the wall surface shape increased, the flame propagation process and the time taken to reach the maximum pressure were found to be faster. As a result, both the flame speed and the explosion overpressure increased as the size of the wall surface shape increased.