서지주요정보
격자형 다공질 연소기의 상, 하부 화염거동에 관한 연구 = A study on the flame behavior for upper and lower solutions in a honeycomb ceramic combustor
서명 / 저자 격자형 다공질 연소기의 상, 하부 화염거동에 관한 연구 = A study on the flame behavior for upper and lower solutions in a honeycomb ceramic combustor / 이용일.
저자명 이용일 ; Lee, Yong-Il
발행사항 [대전 : 한국과학기술원, 1996].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8006199

소장위치/청구기호

학술문화관(문화관) 보존서고

DME 96026

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

초록정보

A laminar premixed flame stabilized inside a honeycomb ceramic was experimentally as well as theoretically investigated here. In previous theoretical studies a stable flame has been predicted in the downstream region of the combustor, but it has never been observed in experiments. In this study, three kinds of combustors were used to stabilize the flame in the downstream of the combustor and in case of combustor type C, a stable downstream flame could be obtained for the lower burning velocity through circumferential heating by a blue flame positioned outside the periphery of the combustor. Also the effects of side heating and acoustic excitation were studied. The existence of the stable downstream flame was confirmed by a direct photography of soot line, and temperature measurements. The measured flame temperature was found to be lower than the adiabatic flame temperature due to its lower heat release. The effect of combustor diameter to flame stability was also considered. As the diameter of the combustor increases, the lean flammability limit was extended. The one-dimensional flame analysis was also carried out by taking account of the side heating resulting from the blue flame. The downstream as well as upstream solution corresponding to upper and lower solutions could be obtained. While upper flame temperature gets higher, lower flame temperature gets lower as the flame approaches the central part of the combustor. Once the net heat recirculation condition was satisfied for a given flow condition, the numerical procedure was stopped and the solution was thought to be obtained. That is how both upstream and downstream flames could be found for a given mass flow rate. However, in order for the downstream flame to be stabilized, more heat needed to be recirculated towards upstream. As the side heat loss increases, upper and lower flames approaches the central part of the combustor from both ends of the combustor.

서지기타정보

서지기타정보
청구기호 {DME 96026
형태사항 xii, 112 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 : 보통의 예혼합 화염에 관한 방정식
저자명의 영문표기 : Yong-Il Lee
지도교수의 한글표기 : 신현동
지도교수의 영문표기 : Hyun-Dong Shin
학위논문 학위논문(박사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 : p. 103-109
주제 다공질 연소기
화염
상부해
하부해
Porous combustor
Flame
Upper solution
Lower solution
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