도파관 배열이 설치된 비상발전기 연도의 유속 예측 및 EMP 차폐평가
기관명 | NDSL |
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저널명 | 한국지열에너지학회논문집 = Transactions of the Korea society of geothermal energy engineers |
ISSN | 1738-6985, |
ISBN |
저자(한글) | 방승기,김재훈,육종관,김유나,김상인,김석봉 |
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저자(영문) | |
소속기관 | |
소속기관(영문) | |
출판인 | |
간행물 번호 | |
발행연도 | 2016-01-01 |
초록 | Characteristics of exhaust from chimney of electricity generator are analyzed based on CFD when Waveguide-Below-Cutoff (WBC) array is installed in order to achieve the certain level of electromagnetic pulse (EMP) shielding. The main purpose is prediction of average and maximum velocity of exhaust. The results reveal that: 1) When the specification of waveguide is given as 80-diameter, 400-length, and the gap of 20 mm, the shielding effectiveness (SE) is 140dB. The average and maximum velocity of exhaust in the chimney with WBC Array can be represented as exponential functions. 2) As the number of WBC increases, the velocity in the chimney dwindles. 3) Under the situation that WBC with 80 mm diameter is located at intervals of 20 mm, the average velocity can be approximated by $25.5344{ times}e^{(-0.0098{ times}N_{WBC})}$ with input velocity of 15 m/s. In addition, the determination coefficient is 0.915, which is sufficiently high. |
원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=JAKO201613752757772 |
첨부파일 |
과학기술표준분류 | |
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ICT 기술분류 | |
DDC 분류 | |
주제어 (키워드) | 전자기파,전산유체역학,도파관 배열,차폐효과,비상발전기,EMP,CFD,Waveguide,WBC Array,Shielding Effectiveness,Emergency Generator |