A layered model for inclined pipe flow of settling slurry
| Autor: | Václav Matoušek, Jan Krupička, Mikoláš Kesely |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Pressure drop
General Chemical Engineering education Layered model Stratification (water) 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology Physical modelling Pipe flow 020401 chemical engineering Settling Slurry 0204 chemical engineering 0210 nano-technology Geology Slurry flow |
| Zdroj: | Powder Technology. 333:317-326 |
| ISSN: | 0032-5910 |
| Popis: | The paper deals with mathematical and physical modelling of flow of partially-stratified settling slurry in inclined pipes. Experimental results are presented of flows of aqueous slurries of four fractions of sand and gravel in two laboratory loops of different pipe diameters. They show a considerable variation in pressure drop and distribution of solids with the pipe slope. The degree of flow stratification and frictional pressure drop decrease with the increasing angle of inclination in the ascending pipe while the opposite applies in the descending pipe. A predictive mathematical model is presented which is based on a description of a layered structure of partially stratified slurry flow and takes flow inclination into account. The experimentally observed effects of pipe inclination are well reproduced by model predictions. Predicted pressure drops and solids distributions are in a very reasonable agreement with the experimental results and indicate suitability of the model for engineering practise. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect