서지주요정보
전기 코로나 방전에서의 프랙탈 차원 = Fractal dimension in the electrical corona discharge
서명 / 저자 전기 코로나 방전에서의 프랙탈 차원 = Fractal dimension in the electrical corona discharge / 김기웅.
저자명 김기웅 ; Kim, Ki-Woong
발행사항 [대전 : 한국과학기술원, 1997].
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소장정보

등록번호

8007293

소장위치/청구기호

학술문화관(문화관) 보존서고

MPH 97003

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초록정보

The fractal dimension in the electrical corona discharge varying experimental setups and simulation methods was considered in this research. We can use the fractal dimension as a parameter that describe the growth phenomena systems like DLA or DBM. By the means of the fractal dimension, we can also classify the systems with a universality. Hence we have used capacity(box-counting dimension) as a tool to investigate the growth of streamers in the corona discharge. This work is made of summarizing of theories, computer simulations and comparing with analyzed experimental results. Before this work, there were several problems on describing the experimental setups which had mismatched the result of stochastic simulation method (D~1.7). Our experiment with the setup of needle-plate electrodes which had been reported in the previous work resulted in D~2.0 of a random growth condition. but the stochastic simulation gave the results of D~1.7. It became known by the new experiment that the setup of needle-ring electrodes could explain well the result of the stochastic model. In case of the setup of needle-plate electrodes, we assumed that the growth of corona streamer was under the influence of the film surface and have constructed a new simulation model(FSEAM) which gave the same fractal dimension with the experiment(D~2.0). We also got a graph of the η-D multifractal. This graph implies the dependence of a growth possibility on a local electric field. From this graph and the experimental result of the setup of needle-ring electrodes we have known that the streamer growth rate is proportional to the local electric field(η~1.0). With this result we also simulated about a 3D boundary condition. It has resulted in D~2.0.

서지기타정보

서지기타정보
청구기호 {MPH 97003
형태사항 iii, 61 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Ki-Woong Kim
지도교수의 한글표기 : 이순칠
지도교수의 영문표기 : Soon-Chil Lee
학위논문 학위논문(석사) - 한국과학기술원 : 물리학과,
서지주기 참고문헌 : p. 39-41
주제 프랙탈 차원
코로나 방전
Fractal dimension
Corona discharge
DBM
DLA
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