The study of slurry flow is important in the analysis and design of transport equipment that is resistant to solid particle erosion. Ultrasound transducers have been used to track particle concentration and particle velocity profiles across a representative pipe slurry flow.
The aim of this work is to measure local particle concentration using an A-scan measuring technique and to utilize pulsed ultrasound Doppler Velocimetry (PUDV), which is a non-invasive flow measurement technique for both opaque and transparent fluids, to measure fluid velocity profiles and to determine the most appropriate setup for PUDV to measure the velocity profiles (i.e. transducer frequency, Doppler angle, transducer dimension). The PUDV will then obtain velocity measurements in a slurry pump. The effect of varying PUDV settings is also studied, and is found to generally be small.
Computational fluid dynamics (CFD) modeling was performed. The numerical results were in good agreement with the experimental data, for both the local particle velocity and concentration. It has been found that the transducer with 80 degree Doppler angle and a large sized (14mm diameter) transducer give the best results for the local particle velocity measurements. These results will be considered as an introduction to use them as a guide for measuring the velocity profiles in the pump casing.