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논문 기본정보

백드래프트의 중력흐름에 미치는 구획실 내부 초기조건 및 개구부 형상의 영향

논문 개요

기관명, 저널명, ISSN, ISBN 으로 구성된 논문 개요 표입니다.
기관명 NDSL
저널명 한국안전학회지 = Journal of the Korean Society of Safety
ISSN 1738-3803,
ISBN

논문저자 및 소속기관 정보

저자, 소속기관, 출판인, 간행물 번호, 발행연도, 초록, 원문UR, 첨부파일 순으로 구성된 논문저자 및 소속기관 정보표입니다
저자(한글) 박지웅,오창보,한용식,도규형
저자(영문)
소속기관
소속기관(영문)
출판인
간행물 번호
발행연도 2015-01-01
초록 Computational study of a gravity current prior to the backdraft was conducted using fire dynamic simulator (FDS). Various initial conditions of mixture compositions and compartment temperature as well as four opening geometries (Horizontal, Door, Vertical, and Full opening) were considered to figure out their effects on the gravity current. The density difference ratio ( ${ beta}$ ) between inside and outside of compartment, the gravity current time ( $t_{grav}$ ) and velocity ( $v_{grav}$ ), and non-dimensional velocity ( $v^*$ ) were introduced to quantify the flow characteristics of the gravity current. Overall fluid structure of the gravity current at the fixed opening geometry showed similar development process for different ${ beta}$ conditions. However, $t_{grav}$ for entering air to reach the opposed wall to the opening geometry increased with ${ beta}$ . Door, Vertical, and Horizontal openings where openings are attached on the ground showed similar development process of the gravity current except for Horizontal opening, which located on the middle of the opening wall. The magnitude of $v_{grav}$ at fixed ${ beta}$ was, from largest to smallest, Full gt; Vertical gt; Door gt; Horizontal, but it depended on both the size and location of the opening. On the other hand, $v^*$ was found to be independent to ${ beta}$ , and only depended on the geometry of the opening.
원문URL http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=JAKO201506050646973
첨부파일

추가정보

과학기술표준분류, ICT 기술분류,DDC 분류,주제어 (키워드) 순으로 구성된 추가정보표입니다
과학기술표준분류
ICT 기술분류
DDC 분류
주제어 (키워드) backdraft,fire dynamics simulator(FDS),gravity current,non-dimensional velocity,compartment fire