TY - JOUR N2 - The study presents the manners of determination of the Darcy friction factor λ for a homogenous hydromixture of alum sludge of varied hydration and temperature for the laminar flow zone. The rheological evaluation of the hydromixture as a viscoplastic body has been conducted with use of measurements of viscosity. The curves of flow were approximated with use of the generalized Vočadlo model. The Darcy friction factor λ of the pipeline was determined with use of the non-dimensional criterion λ(Regen) and λ(Re, He). L1 - http://www.czasopisma.pan.pl/Content/85982/PDF/aep-2014-0037.pdf L2 - http://www.czasopisma.pan.pl/Content/85982 PY - 2014 IS - No 4 DO - 10.2478/aep-2014-0037 KW - Alum sludge KW - rheology KW - hydrotransport KW - Reynolds number A1 - Kempiński, Jan A1 - Sozański, Marek M. A1 - Dymaczewski, Zbysław A1 - Świerzko, Robert PB - Polish Academy of Sciences VL - vol. 40 DA - 2014 T1 - Characteristics of Laminar Flow in Pipelines of Homogenous Alum Sludge Approximated with use of the Vočadlo Model for Viscoplastic Liquids UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/85982 T2 - Archives of Environmental Protection ER -