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| 适于水工物理模型的新型表面流速测量技术 | |
| 引用本文： | 吴俊,陈伟民,丁甡奇.适于水工物理模型的新型表面流速测量技术[J].光电工程,2009,36(12). |
| 作者姓名： | 吴俊 陈伟民 丁甡奇 |
| 作者单位： | 1. 重庆交通大学,省部共建水利水运工程教育部重点实验室,重庆,400074;重庆大学,光电技术及系统教育部重点实验室,重庆,400030 2. 重庆大学,光电技术及系统教育部重点实验室,重庆,400030 3. 重庆交通大学,省部共建水利水运工程教育部重点实验室,重庆,400074 |
| 基金项目： | 重庆交通大学省部共建水利水运工程教育部重点实验室开放基金资助项目 |
| 摘 要： | 针对水工物理模型表面流速测量方法的技术现状,提出了一种不对流场造成破坏的新型光电非接触式表面流速测量方法.对流速测量原理进行推导,并对影响测量精度的因素进行了分析.搭建了实验系统,在6种不同标定流速下,对0、25 kg/m~3及50 kg/m~3三种含沙量情况下的流速进行了测量.实验结果表明,在三种不同含沙量情况下,实测流速与标定流速的一致性较好,证明理论的可行性.实验还发现,水体适量含沙能提高流速测量精度,流速相对误差能控制在8%以下. |
| 关 键 词： | 光电测量 表面流速 非接触 水工物理模型 |
Measurement Technology of Surface Flow Velocity for Hydraulic Physical Model |
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| WU Jan,CHEN Wei-min,DING Shen-qi.Measurement Technology of Surface Flow Velocity for Hydraulic Physical Model[J].Opto-Electronic Engineering,2009,36(12). | |
| Authors: | WU Jan CHEN Wei-min DING Shen-qi |
| Abstract: | Aiming at the technology actuality of surface flow velocity measurement,a novel noncontact method for measuring surface flow velocity is proposed.Principle of flow measurement is deduced,and the factors that affect measurement accuracy are analyzed.Experimental system is set up.In the cases of three sediment concentrations,flow velocity is measured at 6 different flow rates.The experimental results show that under three different sediment concentrations,the measured flow velocity accords very well with the calibration flow velocity,which proves the feasibility of the theory.It is found that the relative error can be controlled less than 8% under the circumstances of suitable sediment in liquid. |
| Keywords: | optoelectronic measurement surface flow velocity noncontact hydraulic physical model |
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