지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 발행연도
- 2022
- 저작권
- 순천대학교 논문은 저작권에 의해 보호받습니다.
이용수8
이 논문의 연구 히스토리 (3)
- 이 논문의 후속연구가 궁금하신가요?
- 연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
- 이 논문의 연구 히스토리 확인하기
초록· 키워드
오류제보하기
The developed turbulent flow by the space-filling square fractal grid for the shape of the central turbulence generating plate on low swirl injector was observed to characterize turbulent/flame interaction. In non reacting flow fields, Turbulence mean velocity(Umean), fluctuation(u’) and large isotropy factor(u’/v’) were investigated via various reduction rates of bar thickness (RRBT) as a functional parameter of turbulent flow. For the decaying region of developed turbulence flow, normalized turbulent intensity was functionally characterized by Meff((Lo/Ri)2 /(to/Ri)0.01) which is the parameters of fractal grid.
Furthermore, turbulent length scale ratio (LT/) and dissipation coefficient(Cε) also presented for evaluating the quality of turbulent equilibrium phenomenon based on Richardson Kolmogorov equilibrium cascade. In Reacting flow fields, All condition of the flame regime for this study located in the thin reaction zone (1<?<100, 1< ?<100, ?<1). To characterizing the turbulent flame speed for low swirl flame, mean velocity(Umean), fluctuation(u’) and integral length scale(LT) were also investigated for various shape of fractal grid and mixture condition. Increasing RRBT increase the u’ in front of flame brush with increasing turbulent local displacement flame speed(ST) via a non-linear correlation. The effects of length scale(LT/δL) and velocity ratio(u’/SL) were was organized by empirical correlation study. The results of linearly expanded correlation equation with ST indicates the influence of velocity factors greater than length scale through the exponential value. For physical understand with flow and flame properties, ? against (ST-SL)/u’ also evaluated with various RRBTs
Furthermore, turbulent length scale ratio (LT/) and dissipation coefficient(Cε) also presented for evaluating the quality of turbulent equilibrium phenomenon based on Richardson Kolmogorov equilibrium cascade. In Reacting flow fields, All condition of the flame regime for this study located in the thin reaction zone (1<?<100, 1< ?<100, ?<1). To characterizing the turbulent flame speed for low swirl flame, mean velocity(Umean), fluctuation(u’) and integral length scale(LT) were also investigated for various shape of fractal grid and mixture condition. Increasing RRBT increase the u’ in front of flame brush with increasing turbulent local displacement flame speed(ST) via a non-linear correlation. The effects of length scale(LT/δL) and velocity ratio(u’/SL) were was organized by empirical correlation study. The results of linearly expanded correlation equation with ST indicates the influence of velocity factors greater than length scale through the exponential value. For physical understand with flow and flame properties, ? against (ST-SL)/u’ also evaluated with various RRBTs
목차
Ⅰ. 서 론 11. 1. 연구 배경 11. 2. 연구동향 31. 3. 연구 목적 12Ⅱ. 실험장치 및 방법 142. 1. 저선회 연소기 142. 2. 공간채움형 사각 프랙탈 격자 202. 3. 열선 유속계 262. 4. PDPA and LDV 272. 5. 난류 길이스케일 및 소산계수 측정 32Ⅲ. 결과 및 고찰 373. 1. 비반응장 373. 2. 반응장 51Ⅳ. 결론 66
최근 본 자료
댓글(0)
0