초고속가열에 의한 금속세선의 폭발현상에 관한 연구

The Study on Explosion Phenomena of a Metal Wire by Rapid Heating in Water

  • 장인선 (부경대학교 냉동공조공학과) ;
  • 김종수 (부경대학교 냉동공조공학과)
  • Jang, In-Seon (Dept. of Refrigeration & Air Conditioning Engin., of Pukyong Univ.) ;
  • Kim, Jong-Su (Dept. of Refrigeration & Air Conditioning Engin., of Pukyong Univ.)
  • 발행 : 1997.03.01

초록

The aim of the present study is to investigate experimentally the mechanism of an exploding wire in water and also to observe the bubble motion induced by an exploding wire. The experiment of an exploding wire is carried out in a water tank. As a metallic wire, a tungsten wire of 0.2mm in diameter and 10mm in length is employed. The electric energy of 50-300J is fed to the wire from a capacitor of 100$\mu$F charged up to 1-2.5kV. The explosion is recorded by a CCD camera with the resolution of 1$\mu$sec. The explosion process of metallic wire is divided into three phases. Phase 1 : As the voltage is applied to the wire, the temperature increases due to Joule heating and the wire emits light. Phase 2 : Then the wire melts and the cylindrical plasma is formed between the electrodes. Up to this stage, strong light emission is observed. Phase 3 : The light emission goes out and a vapor bubble begins to grow spherically. The radius of a bubble oscillates in time, but the amplitude of oscillation diminishes in several cycles.

키워드

참고문헌

  1. J. Appl. Phys. v.37 A Comparative Study of Exploding Wires in Air and Water H. D. Edelsen;T. Korneff
  2. 塑性と加工 v.11 線爆發による複合金屬の壓接着 栖原;福田;伊藤;福永
  3. 電氣工學誌 v.16 放電成形における發弧用導線の效果に關する檢討 藤村;五十鈴川
  4. ながれ v.7 蒸氣爆發とその機構に關する實驗 Y. Iida;T. Takashima
  5. J. Soc. Phys. Jpn. v.65 no.2 Formation Process of a Vortex Ring by an Exploding Wire in water I. S. Jang;S. Watanabe
  6. 物理學辭典(日本) 物理學辭典編輯委員會
  7. 電氣學會論文集 A v.106 no.10 銅線の局部溶斷による球狀衝擊波の發生 K. Yukimura
  8. Under Water explosion H. Cole
  9. Phys. Fluids v.1 Cylindrical Shock Waves from Exploding Wires F. D. Bennett
  10. J. Soc. Phys. Jpn. v.64 no.10 Generation of a Vortex Ring with High Reynolds Numbers by an Exploding Wire in water S. Watanabe;I. S. Jang(et al.)
  11. キャビテ-ション 加藤洋治
  12. J. Appl. Phys. v.27 no.10 Damping of underwater explosion bubble oscillations B. Keller;I. Kolodner
  13. High Temperature-High Pressure v.14 Steam explosion experiments with single drops of iron oxide with a CO₂laser L. S. Nelson;P. M. Duda
  14. 塑性と加工 v.25 no.283 放電時の現象と壓力の發生 今井田豊
  15. 日本傳熱シンポジウム講演論文集第31回 白金細線の超高速加熱と爆發現象 M. Shoji;K. Wakamatsu;T. Ohkubo;S. Mizukami
  16. 蒸氣爆發の動力學ニュ-スレタ v.2 no.3 Exploding wire を用いた過輪生成の實驗 S. Watanabe
  17. 蒸氣爆發の動力學 硏究成果報告書 高レイノルズ數過輪の實驗と金屬微粒子の物性 S. Watanabe
  18. 공기조화냉동공학회 부산경남지부 추계학술강연집 水中Exploding wire법에 의한 고속유동현상에 관한 연구 In Sung Jang