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平焰燃烧主要燃烧区冷态轴向速度场的PIV研究
PIV research on axial speed field in flat-flame burning leading combustion region of cold model test
【摘要】 针对单烧嘴湍流平焰燃烧冷态模型实验(1∶1),采用粒子激光成像测速(PIV)技术对烧嘴下方的主要燃烧速度场进行了测量,得出在旋流强度为1.76,空气量/煤气量=13.68时的速度场;速度场主要由回流区和贴附射流区组成;主要探讨了2个区域轴向速度的分布特性,为后续热态实验研究打下基础.
【Abstract】 The leading combustion speed field under the burner was obtained by using particle image velocimetry(PIV) technique for the single burner turbulent flat-flame of cold model test,with the ratio of oxygen to air being 1∶1 and the ratio of air to coal being 13.68,under the whirl strength of 1.76.The speed field is composed of back flow region and joint jetting region.Herein,the distributing characteristic of axial velocity in the two regions were discussed,which may provide the foundational reference for the next heat test.
【关键词】 PIV;
湍流;
预混;
平焰;
单烧嘴;
冷态实验;
轴向速度;
【Key words】 PIV; turbulence; premixing; flat-flame; the single burner; the cold model test; axial velocity;
【Key words】 PIV; turbulence; premixing; flat-flame; the single burner; the cold model test; axial velocity;
【基金】 国家自然科学基金资助项目(50464004)
- 【文献出处】 包头钢铁学院学报 ,Journal of Baotou University of Iron and Steel Technology , 编辑部邮箱 ,2006年03期
- 【分类号】TF051
- 【被引频次】3
- 【下载频次】126