• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Science, Measurement & Technology, IET >Improvement of gas ultrasonic flowmeter measurement non-linearity based on ray tracing method
【24h】

Improvement of gas ultrasonic flowmeter measurement non-linearity based on ray tracing method

机译：基于射线追踪法的气体超声流量计测量非线性的改进

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Gas ultrasonic flowmeters are widely used in natural gas industry. When flow velocity achieves to tens of meters per second, the measurement error may appear significant non-linearity with flow velocity increased. In order to solve this problem, reasons of non-linearity are discussed based on the ray acoustics theory. First, the two-dimensional ray tracing method is introduced and realised by Matlab. Second, both DN100 and DN500 diametric single path gas ultrasonic flowmeters are simulated, respectively. The ultrasonic wave propagation trajectory, transit time, path angle and receiving position of transducer are analysed with increasing flow velocities 1-50 m/s. Third, it is noted that the assumption of traditional velocity measurement model is not consistent with the actual ultrasound propagation. Therefore, a corrected model is proposed. Through comparing results of traditional and corrected models, the measurement error is reduced up to 4%, and the measurement non-linearity is improved.
机译：气体超声波流量计广泛用于天然气工业。当流速达到每秒数十米时，随着流速的增加，测量误差可能会出现明显的非线性。为了解决这个问题，基于射线声学理论讨论了非线性的原因。首先，介绍了二维射线追踪方法，并通过Matlab实现。其次，分别模拟了直径为DN100和DN500的单路气体超声流量计。随着流速的增加（1-50 m / s），分析了超声波的传播轨迹，传播时间，路径角度和换能器的接收位置。第三，注意到传统速度测量模型的假设与实际的超声传播不一致。因此，提出了校正模型。通过比较传统模型和校正模型的结果，可将测量误差降低多达4％，并改善了测量非线性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号