| 合成气低旋流燃烧器设计与流动结构的分析 |
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| 引用本文： | 尹航,钟仕立,戴韧,陈永辰.合成气低旋流燃烧器设计与流动结构的分析[J].动力工程,2011,31(2). |
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| 作者姓名： | 尹航 钟仕立 戴韧 陈永辰 |
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| 作者单位： | 上海理工大学能源与动力工程学院,上海,200093 |
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| 基金项目： | 上海市重点学科建设资助项目(J505011) |
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| 摘 要： | 设计了一个合成气低旋流燃烧器,采用PIV技术对不同负荷下的冷态流场进行了测量,并比较分析了不同中心射流流速对旋流流场的影响.结果表明:流场中出现中心回流区时的旋流数与中心流速无关,高旋流与低旋流的分界点为S＝0.7;流场中的轴向速度、径向速度和湍动能均关于燃烧器中心轴线对称;中心轴线上无量纲轴向速度的分布与中心射流流速(负荷)无关,燃烧器出口下游形成一个发散低速区,有利于稳定充分燃烧;随中心射流速度的增大,径向速度成正比增大,湍动能明显增加.
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| 关 键 词： | 合成气 低旋流燃烧器 流场 旋流强度 旋流数 PIV技术 |
Design of Low Swirl Syngas Burner and Analysis on the Flow Pattern |
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| YIN Hang
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ZHONG Shi-li
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DAI Ren
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CHEN Yong-chen.Design of Low Swirl Syngas Burner and Analysis on the Flow Pattern[J].Power Engineering,2011,31(2). |
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| Authors: | YIN Hang ZHONG Shi-li DAI Ren CHEN Yong-chen |
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| Affiliation: | YIN Hang,ZHONG Shi-li,DAI Ren,CHEN Yong-chen(School of Energy and Powering Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China) |
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| Abstract: | A syngas burner with low swirling intensity was designed and the cold state flow flields at different loads were measured using PIV technology.The influence of different central jet velocities on swirling flow field was compared and analyzed.Results show that when the central recirculation zone appears,the critical swirl number has nothing to do with the central jet velocity,and the demarcation between high and low swirl flow is S=0.7.The axial velocity,radial velocity and turbulent kinetic energy are all s... |
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| Keywords: | syngas burner with low swirling intensity flow field swirling intensity swirl number PIV technology |
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