| 速度面积法中不同特征点位置选择法之比较 |
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| 引用本文： | 周宁宁,梁国伟. 速度面积法中不同特征点位置选择法之比较[J]. 中国计量学院学报, 2003, 14(2): 104-108 |
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| 作者姓名： | 周宁宁 梁国伟 |
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| 作者单位： | 中国计量学院,计量技术工程学院,浙江,杭州,310012 |
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| 摘 要： | 介绍了用速度面积法测量流量时所用的三种基本方法,即等环面法[1]、切比雪夫积分法[7]和对数线性法[1],并用理论计算的方法讨论了这三种方法所得的数据和理论值的一致性.结果表明,在选取相同数目测点的情况下,对数线性法的一致性比其他两种方法要高,而等环面法一致性稍差.
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| 关 键 词： | 特征点位置 平均流速 速度面积法 流速分布 流量测定 |
| 文章编号： | 1004-1540(2003)02-0104-05 |
The comparison of selection of different characteristic points with Area Velocity method |
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| ZHOU Ning|ning,LIANG Guo|wei. The comparison of selection of different characteristic points with Area Velocity method[J]. Journal of China Jiliang University, 2003, 14(2): 104-108 |
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| Authors: | ZHOU Ning|ning LIANG Guo|wei |
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| Abstract: | Three essential methods in flow rate measurement with area velocity method such as the equal ring method?the Tchebycheff integral method?the log|linear method are introduced in the paper. The measuring precisions of the three methods are discussed with theoretical calculation.The results indicate that the precision of the log|linear method is best and the precision of the equal ring method is worse than the other methods if we choose same numbers of measuring pionts. |
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| Keywords: | the location of the characteristic pionts the average velocity of flow area velocity method distribution of the velocity of flow flow rate measarement |
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