本文選題：光學(xué)測(cè)量 + 激光光譜��； 參考：《光學(xué)精密工程》2017年05期

【摘要】：微射流火焰形貌觀測(cè)及火焰中重要基元的準(zhǔn)確測(cè)量,對(duì)利用微尺度火焰燃燒特性研制開(kāi)發(fā)微型燃燒動(dòng)力系統(tǒng)具有重要意義。本文建立了微噴管射流火焰實(shí)驗(yàn)及光學(xué)測(cè)量系統(tǒng),對(duì)H_2和CH_4微射流火焰進(jìn)行了實(shí)驗(yàn)研究,測(cè)量了兩種重要基元(CH,OH)的空間分布。首先,探索了相機(jī)曝光時(shí)間對(duì)H_2微射流火焰成像的影響,得到了不同流速下H_2微射流火焰形貌的變化規(guī)律。其次,采用平面激光誘導(dǎo)熒光測(cè)量技術(shù)得到了不同燃料流速下H_2及CH_4微射流火焰中OH基元分布,同時(shí)還利用單反相機(jī)加CH濾鏡通過(guò)長(zhǎng)時(shí)間曝光(30s)的方法獲得了CH_4微射流火焰中CH基元的分布。結(jié)果表明,火焰圖像清晰度隨曝光時(shí)間增加提高,曝光時(shí)間30s時(shí)可獲得H_2微射流火焰的清晰照片;采用分辨率2 048×2 048的ICCD相機(jī)可獲得微尺度火焰OH基元分布的清晰圖像。微射流火焰形貌及重要基元的實(shí)驗(yàn)結(jié)果表明相關(guān)數(shù)值計(jì)算方法準(zhǔn)確可靠。
[Abstract]:The observation of micro jet flame morphology and the accurate measurement of important elements in the flame are of great significance to the development of micro combustion power system using the combustion characteristics of micro scale flame. In this paper, a micro nozzle jet flame experiment and an optical measurement system have been established. The experimental study of HST2 and CH_4 micro jet flame has been carried out, and the spatial distribution of the two important elements (Cho) has been measured. Firstly, the influence of camera exposure time on the flame imaging of HSP _ 2 microjet was investigated, and the variation of the flame morphology of HSP _ 2 micro-jet at different velocity was obtained. Secondly, the distribution of OH units in HST2 and CH_4 micro-jet flame was obtained by planar laser-induced fluorescence measurement under different fuel flow rates. At the same time, the distribution of Ch elements in CH_4 micro-jet flame was obtained by using SLR camera and Ch filter through long-time exposure for 30 s. The results show that the sharpness of the flame image increases with the exposure time, and the clear picture of the H2 micro-jet flame can be obtained at the exposure time of 30s, and the clear image of the distribution of the OH elements in the micro-scale flame can be obtained by using the ICCD camera with a resolution of 2048 脳 2048. The experimental results of flame morphology and important elements of micro-jet show that the numerical calculation method is accurate and reliable.
【作者單位】： 中國(guó)科學(xué)院廣州能源研究所;中國(guó)科學(xué)院可再生能源重點(diǎn)實(shí)驗(yàn)室;廣東省新能源和可再生能源研究開(kāi)發(fā)與應(yīng)用重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金重點(diǎn)資助項(xiàng)目(No.51336010) 國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃資助項(xiàng)目(No.2014CB239601) 廣東省科技計(jì)劃資助項(xiàng)目(No.2016A040403095)
【分類號(hào)】：O657.3;TN249

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