초록 ▼

1차년도인 '87년에는 film detonation 실험용 shock tube를 설계ㆍ제작하여, 저휘발성 oil인 n-octanol의 film detonation에 대한 폭발특성을 조사 ㆍ분석하고 폭발전파과정을 high speed camera를 이용하여 20만fps로 고속촬영하였다.2차년도인 '88년에는 광학시스템을 보완하여 좀더 선명한 고속촬영사진을 얻는 한편, 관망창을 이동시킨 위치에서도 실험을 행하여 전파거리에 따른 현상의 변화를 관측함으로써, 전파기구를 규명하였다. 또한, one-dimensional theory를 이용하여

1차년도인 '87년에는 film detonation 실험용 shock tube를 설계ㆍ제작하여, 저휘발성 oil인 n-octanol의 film detonation에 대한 폭발특성을 조사 ㆍ분석하고 폭발전파과정을 high speed camera를 이용하여 20만fps로 고속촬영하였다.2차년도인 '88년에는 광학시스템을 보완하여 좀더 선명한 고속촬영사진을 얻는 한편, 관망창을 이동시킨 위치에서도 실험을 행하여 전파거리에 따른 현상의 변화를 관측함으로써, 전파기구를 규명하였다. 또한, one-dimensional theory를 이용하여 simulation함으로써 실험데이타와 이론치를 비교하였다.

Abstract ▼

This report is devoted to the experimental and theoretical study of film detonation.Experiment was conducted in a rectangular shock tube with a thin layer of n-octanol coated on the bottom wall of the tube as a nonvolatile oil and with gaseous oxygen in the tube as the oxidizer. The propagation proc

This report is devoted to the experimental and theoretical study of film detonation.Experiment was conducted in a rectangular shock tube with a thin layer of n-octanol coated on the bottom wall of the tube as a nonvolatile oil and with gaseous oxygen in the tube as the oxidizer. The propagation process was investigated with the high speed color schlieren photograph by paying attention especially to the change of wave structure according to the propagated distance.It is shown that the propagation process is unsteady in the beginnings of film detonation, but it becomes steady gradually with supporting by secondary shock waves periodically generated as it propagates, and that the primary shock wave is a pile of the emaciated secondary shock waves.Simulation was performed by using the one dimensional theory. Despite the many gross approximations made in this work, it can be seen that the theory predicts the gross features of film detonation approximately.

목차 Contents

• 표지...1
• 제출문...3
• 요약문...5
• 목차...10
• 제 1 장 서 론...13
• 제 2 장 실 험...14
• 2-1 실험장치 및 실험방법...14
• 2-2 광학시스템...17
• 제 3 장 실험결과 및 분석...21
• 3-1 압력파형...21
• 3-2 고속촬영사진...24
• 3-3 전파기구...28
• 제 4 장 Simulation...29
• 4-1 이 론...29
• 4-2 Programming...36
• 4-3 결과 및 분석...45
• 제 5 장 결 론...48
• 부 록...49
• 1. m₃의 계산...51
• 2. Property계산...55
• 3. Variable정리...57
• 4. Program...62
• 5. 참고문헌...67