서지주요정보
복사와 대류에 의한 사각 밀폐공간내 고체연료의 점화에 관한 연구 = Analysis on the radiative and convective ignition of the solid fuel in a confined rectangular enclosure
서명 / 저자 복사와 대류에 의한 사각 밀폐공간내 고체연료의 점화에 관한 연구 = Analysis on the radiative and convective ignition of the solid fuel in a confined rectangular enclosure / 김택영.
발행사항 [대전 : 한국과학기술원, 1993].
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소장정보

등록번호

8003495

소장위치/청구기호

학술문화관(문화관) 보존서고

DAE 93004

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리뷰정보

초록정보

Ignition of the solid fuel in a confined rectangular enclosure was numerically studied for the two dimensional unsteady natural convective case by taking account of non-participating radiation. The pressure field was evaluated using a compressible form of the SIMPLER algorithm, while QUICK scheme was adopted for finite difference formulation of the convective term. Radiation exchange was calculated by direct matrix inversion. The flow field was strongly governed by the radiation. In particular, the rapid heating of the adiabatic floor due to radiation made the flow therein unstable, and the very complicated fluid motion was incurred during the initial period. As a result of this effect, the fluid dynamic and thermal fields were developed very fast. Radiation was found to reduce the heating time required for the pyrolysis of solid fuel. The volatile gas pyrolyzing from the solid fuel was mixed by convection and diffusion, and then ignited at any position where an appropriate thermal condition was satisfied. The ignition phenomenon was found to be controlled by such mechanisms as the heating and pyrolysis of solid fuel, the convection and diffusion characteristics of fuel and oxidizer, and gas phase heating process. In case that the hot wall temperature was lower than 900K, no ignition occurred. On the other hand, the hot wall temperature ranged between 950K ~ 1100K, the ignition was controlled by the mixing of fuel and oxidizer, and occurred in the hot wall boundary layer. It was also observed that the thermally controlled ignition took place in vicinity of the adiabatic ceiling when the hot wall temperature was higher than 1100K.

서지기타정보

서지기타정보
청구기호 {DAE 93004
형태사항 xiii, 141, [4] p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Taik-Young Kim
지도교수의 한글표기 : 백승욱
지도교수의 영문표기 : Seung-Wook Baek
학위논문 학위논문(박사) - 한국과학기술원 : 항공우주공학과,
서지주기 참고문헌 : p. 84-91
주제 Solid fuel reactors.
Combustion, Theory of.
Heat --Convection, Natural.
Pyrolysis.
Heat --Radiation and absorption.
고체 연료. --과학기술용어시소러스
점화성. --과학기술용어시소러스
대류 열전달. --과학기술용어시소러스
복사 열전달. --과학기술용어시소러스
열 분해. --과학기술용어시소러스
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