| 用热线风速仪测量叶轮后叶片扩压器流场 |
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| 引用本文： | 高丽敏,席光,王尚锦,袁民建,张春梅.用热线风速仪测量叶轮后叶片扩压器流场[J].工程热物理学报,2005,26(4):599-601. |
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| 作者姓名： | 高丽敏 席光 王尚锦 袁民建 张春梅 |
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| 作者单位： | 西安交通大学理学院,陕西,西安,710049;西安交通大学能源与动力学院,陕西,西安,710049 |
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| 基金项目： | 国家自然科学基金;中国博士后科学基金 |
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| 摘 要： | 叶片扩压器对离心压缩机的总体性能影响很大,为了研究叶轮后叶片扩压器内复杂的非定常流动,本文对一大尺度离心压缩机级的叶片扩压器流场进行了实验测量。实验对Dantec的热线探针支架进行了改进,采用了固定热线、相位锁定-系综平均技术,对采集到的热线信号进行了有效地分解,提出了非定常强度的概念来定量考察离心叶轮对叶片扩压器流场的影响。
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| 关 键 词： | 叶片扩压器 热线风速仪 非定常 |
| 文章编号： | 0253-231X(2005)04-0599-03 |
| 修稿时间： | 2004年11月28 |
EXPERIMENTAL INVESTIGATION ON A VANED DIFFUSER FLOWFIELD BEHIND A CENTRIFUGAL IMPELLER USING CONSTANT TEMPERATURE ANEMOMETER |
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| GAO Li-min,Xi Guang,WANG Shang-jin,YUAN Min-Jian,ZHANG Chun-Mei.EXPERIMENTAL INVESTIGATION ON A VANED DIFFUSER FLOWFIELD BEHIND A CENTRIFUGAL IMPELLER USING CONSTANT TEMPERATURE ANEMOMETER[J].Journal of Engineering Thermophysics,2005,26(4):599-601. |
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| Authors: | GAO Li-min Xi Guang WANG Shang-jin YUAN Min-Jian ZHANG Chun-Mei |
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| Abstract: | It is clear that the vaned diffuser plays an important part in overall performance. An experiment was performed on a large scale centrifugal compressor to study the unsteady flow inside the vaned diffuser. The probe support was improved and a hot wire anemometer with Phase-Locked Ensemble Averaged technique was used. The instantaneous signal was decomposed with ensemble-average and time-average. Finally, an unsteady intensity is defined in this paper to describe quantitatively the unsteady effect induced from the impeller. |
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| Keywords: | vaned difFuser CTA unsteady |
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