The study presented here was carried out to obtain the actual solids flow rate by the combination of electrical resistance tomography and electromagnetic flow meter. A new in-situ measurement method based on measurements of EMF and ERT to study the flow rates of individual phases in a vertical flow is proposed.
The study is based on laboratory experiments that were carried out with a 50 mm vertical flow rig for a number of sand concentrations and different mixture velocities. A range of sand slurries with median particle size from 212μm to 355μm was tested. The solid concentration by volume covered was 5% and 15%, and the corresponding density of 5% is 1078 kg/m3 and for 15% 1238 kg/m3. The flow velocity was between 1.5 m·s-1 and 3.0 m·s-1. A total of 6 experimental tests were conducted. The equivalent liquid model was adopted to validate in-situ volumetric solids fraction and calculate the slip velocity.
The results show that the ERT technique can be used in conjunction with an electromagnetic flow meter as a way of measuring slurry flow rate in a vertical pipe flow. However, it should be emphasized that the EMF results must be treated with reservation when the flow pattern at the EMF mounting position is a non-homogenous flow. The flow rate obtained by EMF should be corrected considering the slip velocity and the flow pattern.
|Title of host publication||5th World Congress in Industrial Process Tomography|
|Publisher||International Society for Industrial Process Tomography|
|Number of pages||9|
|Publication status||Published - 2007|
|Event||5th World Congress in Industrial Process Tomography - Bergen, Norway|
Duration: 3 Sep 2007 → 6 Sep 2007
|Conference||5th World Congress in Industrial Process Tomography|
|Period||3/09/07 → 6/09/07|
- Electrical resistance tomography
- Electromagnetic flow meter
- In-situ mean volumetric fraction
- Slip velocity
- Slurry measurement
ASJC Scopus subject areas
- Computer Science Applications
- Computer Vision and Pattern Recognition
- Control and Systems Engineering
- Computational Mechanics