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Your search keyword '"Underwater explosion"' showing total 8 results
Start Over Descriptor "Underwater explosion" Language japanese
8 results on '"Underwater explosion"'

1. Underwater explosion impingement occurring near various shapes

Author

UEDA, Hayate and KITAGAWA, Kazutaka

Subjects
Pressure amplification, Shock Wave, Underwater explosion, Bubble pulse
Abstract

2019年度衝撃波シンポジウム (2020年3月4日-6日. 神戸大学 海事科学研究科（深江キャンパス)）神戸市, 兵庫県, Symposium on Shock Waves in Japan, FY2019 (March 3-4, 2020. Kobe University), Kobe, Hyogo Japan, 2019年度衝撃波シンポジウムは、新型コロナウイルスの感染拡大防止のため開催中止, 資料番号: SA6000148118, レポート番号: P-04[若]

Published
2020

2. Effect of Microbubble Diameter on Deformation of Thin Resin Plate with Continuous Microbubbles Coating Subjected to Underwater Explosion Induced by Pulse Discharge

Author

Koita, Taketoshi, Seki, Yosuke, and Komatsu, Yuki

Subjects
Underwater Explosion, Electrical Discharge, Underwater Shock Wave, Plate Deformation, Microbubble
Abstract

平成30年度衝撃波シンポジウム (2019年3月5日-7日. 横浜国立大学経済・経営学部講義棟1号館 ）横浜市, 神奈川県, Symposium on Shock Waves in Japan, FY2018 (March 5-7, 2019. Yokohama National University), Yokohama, Kanagawa, 資料番号: SA6000134074, レポート番号: 2C2-2

Published
2019

3. Reduction of underwater explosion by porous compressible foam

Author

Kitagawa, Kazutaka, Nagahiro, Daiki, Ohtani, Kiyonobu, and Abe, Atsushi

Subjects
Environmental problem, Pressure attenuation, Underwater explosion, Underwater shock wave
Abstract

平成29年度衝撃波シンポジウム (2018年3月7日-9日. 東北大学片平さくらホール ）仙台市, 宮城県, (2018年3月7日-9日. 宇宙航空研究開発機構角田宇宙センター ）角田市, 宮城県, Symposium on Shock Waves in Japan, FY2017 (March 7-9, 2018. Sakura Hall), Sendai, Miyagi, (March 7-9, 2018. Kakuda Space Center, Japan Aerospace Exploration Agency (JAXA)(KSPC)), Kakuda, Miyagi, 資料番号: SA6000119080, レポート番号: 2C2-4

Published
2018

4. Attenuation effect of underwater explosion by the complex structure shape of porous compressible foam

Author

Nagahiro, Daiki, Ohtani, Kiyonobu, and Kitagawa, Kazutaka

Subjects
Shadow graph, Environmental problem, Pressure attenuation, Underwater explosion, Underwater shock wave
Abstract

平成28年度衝撃波シンポジウム (2017年3月8日-10日. ヴェルクよこすか 横須賀市立勤労福祉会館）横須賀市, 神奈川県, Symposium on Shock Waves in Japan, FY2016 (March 8-10, 2017. Werk Yokosuka), Kanagawa, Japan, 資料番号: SA6000084042, レポート番号: 1C3-2

Published
2017

5. Study on washing effect using the underwater explosion

Author

Nagahiro, Daiki, Ohtani, Kiyonobu, and Kitagawa, Kazutaka

Subjects
PIV, Environment problem, Underwater explosion, Washing effect
Abstract

平成27年度衝撃波シンポジウム (2016年3月7日-9日. 熊本大学 黒髪南地区）熊本市, 熊本県, Symposium on Shock Waves in Japan, FY2015 (March 7-9, 2016. Kumamoto University), Kurokami Chuo-ku, Kumamoto, Japan, 資料番号: SA6000049129, レポート番号: P-17【若】

Published
2016

6. Collision of underwater explosion with porous complex structure foam

Author

Nagahiro, Daiki, Ohtani, Kiyonobu, and Kitagawa, Kazutaka

Subjects
Pressure attenuation, Time-Resolved PIV, Underwater explosion, Underwater shock wave
Abstract

平成27年度衝撃波シンポジウム (2016年3月7日-9日. 熊本大学 黒髪南地区）熊本市, 熊本県, Symposium on Shock Waves in Japan, FY2015 (March 7-9, 2016. Kumamoto University), Kurokami Chuo-ku, Kumamoto, Japan, 資料番号: SA6000049128, レポート番号: P-16【若】

Published
2016

7. Interaction between underwater explosion impingement with the compressible porous rugged wall

Author

Nagahiro, Daiki, Nomura, Tatsuya, Kigtagawa, Kazutaka, Ohtani, Kiyonobu, and Abe, Atsushi

Subjects
Pressure attenuation, Underwater explosion, Underwater shock wave
Abstract

平成26年度衝撃波シンポジウム (2015年3月9日-11日. 群馬県伊香保温泉 ホテル天坊）渋川市, 群馬県, Symposium on Shock Waves in Japan, FY2014 (March 9-11, 2015. Hotel Tenbo), Shibukawa, Gunma, Japan, 資料番号: SA6000038107, レポート番号: P-01（若）

Published
2015

8. Fundamental Characteristics of Underwater Shock Wave due to Underwater Explosion of High Explosives

Author

You Nadamitsu, Masahiro Fujita, Shigeru Itoh, Takashi Honda, Akio Kira, and Shiro Nagano

Subjects
Shock wave, Numerical Analysis, Materials science, Expansion Wave, Explosive material, Mechanical Engineering, Acoustics, Attenuation, Astrophysics::High Energy Astrophysical Phenomena, Shock Wave, Method of Characteristics, Detonation, Condensed Matter Physics, Computer Science::Robotics, Method of characteristics, Shadowgraph, Underwater, Shock Attenuation, Underwater explosion, Physics::Atmospheric and Oceanic Physics
Abstract

Fundamental characteristics of underwater shock waves generated by underwater explosion of high explosives are investigated by both experimentally and by numerical simulation. The attenuation process of the underwater shock wave is also investigated theoretically using a method of characteristics. Slab explosives are used in the experiments. Streak photographs are taken by a high speed camera using a conventional shadowgraph system. When the detonation wave propagates into the explosive, the underwater shock wave is generated at the boundary between the slab explosives and the water. The incident angle of the underwater shock wave is the same as that obtained by the impedance matching method between the explosives and water. The angle then changes due to the effects of interaction with the expansion wave occurring due to the expanded product gas. The attenuation process of the underwater shock wave is well explained by the method of characteristics.

Published
1996

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