Eaves, T;
Paterson, D;
Hewitt, D;
Balmforth, N;
Martinez, M;
(2020)
Dewatering saturated, networked suspensions with a screw press.
Journal of Engineering Mathematics
, 120
pp. 1-28.
10.1007/s10665-019-10029-3.
Preview |
Text
Hewitt_Dewatering saturated, networked suspensions with a screw press_AAM.pdf - Accepted Version Download (1MB) | Preview |
Abstract
A model is presented for the dewatering of a saturated two-phase medium in a screw press. The model accounts for the detailed two-phase rheological behaviour of the pressed material and splits the press into two zones, an initial well-mixed constant-pressure region followed by an axial transport region in which the total pressure steadily increases. In this latter region, a slowly varying helical coordinate transformation is introduced to help reduce the dynamics to an annular bi-axial compression of the two-phase medium. Unlike previous modelling, the transition point between the two zones is determined self-consistently, rather than set a priori, and the pressure along the length of the press is deduced from the rheology of the two-phase flow rather than averaging the two-phase dynamics over a cross section of the press. The model is compared to experimental observations of the dewatering of a paper-making fibre suspension and of a clay slurry, and is shown to reproduce operational data.
| Type: | Article |
|---|---|
| Title: | Dewatering saturated, networked suspensions with a screw press |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/s10665-019-10029-3 |
| Publisher version: | https://doi.org/10.1007/s10665-019-10029-3 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Mathematics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10085779 |
Archive Staff Only
 |
View Item |
