Abstract A new model for Ultrasonic Cross Correlation Flow Meters (USCCFM) has been developed as result of industrial experience at Ontario Power Generation (OPG). Industrial applications of USCCFM have encountered cases where the frozen pattern model failed. The new model is based on the mathematical properties of turbulent velocity fields and correlation functions. It contains a proof that USCCFM measurement in a particular situation is successful, if and only if certain mathematical conditions are satisfied. In this document, the term “successful” means that the USCCFM is able to obtain a consistent cross correlation peak, and a stable time delay from the flow condition; otherwise the measurement is considered unsuccessful. This model applies to all measurement conditions encountered so far.

中文翻译：

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基于工业经验的超声波互相关流量计数学模型

摘要 根据安大略发电公司 (OPG) 的工业经验，开发了一种新的超声波互相关流量计 (USCCFM) 模型。USCCFM 的工业应用遇到了冻结模式模型失败的情况。新模型基于湍流速度场和相关函数的数学特性。它包含在特定情况下 USCCFM 测量成功的证明，当且仅当满足某些数学条件时。在本文档中，术语“成功”是指 USCCFM 能够从流动条件中获得一致的互相关峰值和稳定的时间延迟；否则认为测量不成功。该模型适用于迄今为止遇到的所有测量条件。