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Title: Mechanism Analysis And Estimation Tool Of I Nstallation Effect O N Multipath Ultrasonic Flowmeter
Author: Heming Hu Liang Zhang Tao Meng Chi Wang
Source: 2015 International Symposium on Fluid Flow Measurement
Year Published: 2015
Abstract: Multipath ultrasonic flowmeters are widely used for accurate large diameter flow measurement. Their performance is sensitive to flow filed in conduits which can be disturbed by adjacent installations . This paper focus es on numerical approach to estimate flow error related to disturbed flow filed. Lots of CFD codes can simulate flow field in ultrasonic flowmeter pipeline. I t is more critical to calculate flow error efficiently and reliably afte r obtaining the numerical flow filed. We have analyzed influence mechanism of disturbed flow filed on i nstallation effect , and developed a post - processing tool to calculate flow error for flowmeter with any configuration based on FLUENT flow filed. In the calculation, decomposition of installation effect in to integration error and transverse error is beneficial to analyze the flow error mechanism, and some special treatments of indication flow - rate and standard flow - rate can decrease estimation bias due to nume rical discretization

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