| 双舌型挡板VGT蜗壳速度场的试验研究 |
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| 引用本文： | 王仁人,万金领,刘云岗,李国祥,陆家祥.双舌型挡板VGT蜗壳速度场的试验研究[J].实验流体力学,2001,15(3):30-35. |
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| 作者姓名： | 王仁人 万金领 刘云岗 李国祥 陆家祥 |
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| 作者单位： | 1. 山东轻工业学院机电工程系
2. 山东大学 |
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| 基金项目： | 山东省优秀中青年科学家奖励基金资助项目 ( 972 5 31 1 8) |
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| 摘 要： | 使用IFA30 0热膜风速仪 ,通过选择合适的低通滤波器、合适的采样频率和采样时间 ,用X形探针测量了其无叶喷嘴出口速度的分布以及蜗壳流道的速度场。结果表明 :在两挡板全关时 ,喷嘴出口速度分布较均匀 ;随两挡板开度变化 ,喷嘴出口速度分布变化较大 ;而且沿蜗壳周向其径向速度分布较均匀 ,切向速度分布变化较大 ;沿蜗壳轴向 ,两者变化均较大。当两挡板开度变化时 ,蜗壳流道截面上通流速度的分布不同于自由涡流规律 ,二次流速度分量分布形态类似。
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| 关 键 词： | 变截面涡轮增压器 涡轮壳 速度场 热膜风速仪 测量 |
| 文章编号： | 1007-3124(2001)03-0030-06 |
| 修稿时间： | 2000年12月4日 |
Investigation on velocity field in double tongue-boards VGT turbine scroll |
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| WANG Ren-ren ,WAN Jin-ling ,LIU Yun-gang ,LI Guo-xiang ,LU Jia-xiang.Investigation on velocity field in double tongue-boards VGT turbine scroll[J].Experiments and Measur in Fluid Mechanics,2001,15(3):30-35. |
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| Authors: | WANG Ren-ren WAN Jin-ling LIU Yun-gang LI Guo-xiang LU Jia-xiang |
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| Institution: | WANG Ren-ren 1,WAN Jin-ling 1,LIU Yun-gang 2,LI Guo-xiang 2,LU Jia-xiang 2 |
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| Abstract: | In this paper, the velocity fields of vaneless nozzle and flow section are investigated with IFA300hot-film anemometer and X probes after suitable low-pass filter, sample frequency and time are selected. The nozzle exit velocity distributes evenly as both boards are closed. As the positions of both boards vary, the distributions change larger; the peripheral distribution of its radical velocity is even and the peripheral variation of its tangential velocity is heavier, and both change greatly around scroll axle direction. With different board positions, it is not in the light of free vortex that the through-flow velocity distributes, and the secondary flow velocities have similar distributions. |
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| Keywords: | VGT turbine casing velocity field hot-film anemometer measurement |
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