谢伟亮, 王红涛, 竺晓程, 周代伟, 杜朝辉. 汽轮机低压排气缸内流场的PIV实验研究[J]. 实验流体力学, 2011, 25(5): 64-69. DOI: 10.3969/j.issn.1672-9897.2011.05.013
引用本文: 谢伟亮, 王红涛, 竺晓程, 周代伟, 杜朝辉. 汽轮机低压排气缸内流场的PIV实验研究[J]. 实验流体力学, 2011, 25(5): 64-69. DOI: 10.3969/j.issn.1672-9897.2011.05.013
XIE Wei-liang, WANG Hong-tao, ZHU Xiao-cheng, ZHOU Dai-wei, DU Zhao-hui. PIV experimental investigation of the flow field in a low-pressure exhaust hood of a stream turbine[J]. Journal of Experiments in Fluid Mechanics, 2011, 25(5): 64-69. DOI: 10.3969/j.issn.1672-9897.2011.05.013
Citation: XIE Wei-liang, WANG Hong-tao, ZHU Xiao-cheng, ZHOU Dai-wei, DU Zhao-hui. PIV experimental investigation of the flow field in a low-pressure exhaust hood of a stream turbine[J]. Journal of Experiments in Fluid Mechanics, 2011, 25(5): 64-69. DOI: 10.3969/j.issn.1672-9897.2011.05.013

汽轮机低压排气缸内流场的PIV实验研究

PIV experimental investigation of the flow field in a low-pressure exhaust hood of a stream turbine

  • 摘要: 使用时间分辨粒子图像测速仪(TR-PIV)对汽轮机低压排气缸模型内流场进行了研究.通过对某些特征平面的测量,获得了其平均流场的速度矢量与涡量,发现其内部流动从上部至出口呈现多个涡合并为一个通道涡的过程,通道涡主导了蜗壳通道内的流动,其涡量沿主流方向逐渐降低.实验还发现,在排气缸下部加装的隔板能有效阻止非主流方向上的流动,这将有利于有效通流面积的增加和降低流动损失.

     

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