A layered model for inclined pipe flow of settling slurry

0489045 - ÚH 2019 RIV CH eng J - Článek v odborném periodiku
Matoušek, Václav - Krupička, Jan - Kesely, Mikoláš
A layered model for inclined pipe flow of settling slurry.
Powder Technology. Roč. 333, June (2018), s. 317-326. ISSN 0032-5910. E-ISSN 1873-328X
Grant CEP: GA ČR GA17-14271S
Institucionální podpora: RVO:67985874
Klíčová slova: inclined pipe * settling slurry * pressure drop * flow stratification * laboratory loop
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 3.413, rok: 2018

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.
Trvalý link: http://hdl.handle.net/11104/0283623