Related Experiment Video
Updated: Feb 14, 2026

Blood Flow Imaging with Ultrafast Doppler
Published on: October 14, 2020
Effect of Doppler flow meter position on discharge measurement in surcharged manholes
Haoming Yang1, David Z Zhu1, Yanchen Liu2
1Department of Civil Engineering, Zhejiang University, Hangzhou 310027, China and Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 2W2, Canada.
Abstract:
Determining the proper installation location of flow meters is important for accurate measurement of discharge in sewer systems. In this study, flow field and flow regimes in two types of manholes under surcharged flow were investigated using a commercial computational fluid dynamics (CFD) code. The error in measuring the flow discharge using a Doppler flow meter (based on the velocity in a Doppler beam) was then estimated. The values of the corrective coefficient were obtained for the Doppler flow meter at different locations under various conditions. Suggestions for selecting installation positions are provided.
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