TY - JOUR N2 - The majority of publications and monographs present investigations which concern exclusively twophase flows and particulary dispersed flows. However, in the chemical and petrochemical industries as well as in refineries or bioengineering, besides the apparatuses of two-phase flows there is an extremely broad region of three-phase systems, where the third phase constitutes the catalyst in form of solid particles (Duduković et al., 2002; Martinez et al., 1999) in either fixed bed or slurry reactors. Therefore, the goal of this study is to develop macroscopic, averaged balances of mass, momentum and energy for systems with three-phase flow. Local instantaneous conservation equations are derived, which constitute the basis of the method applied, and are averaged by means of Euler’s volumetric averaging procedure. In order to obtain the final balance equations which define the averaged variables of the system, the weighted averaging connected with Reynolds decomposition is used. The derived conservation equations of the trickle-bed reactor (mass, momentum and energy balance) and especially the interphase effects appearing in these equations are discussed in detail. L1 - http://www.journals.pan.pl/Content/84929/PDF/06-paper-Burghardt.pdf L2 - http://www.journals.pan.pl/Content/84929 PY - 2014 IS - No 1 March EP - 96 DO - 10.2478/cpe-2014-0006 KW - multiphase flow KW - averaging procedure KW - trickle-bed reactor conservation equations A1 - Burghardt, Andrzej PB - Polish Academy of Sciences Committee of Chemical and Process Engineering DA - 2014 T1 - Eulerian Three-Phase Flow Model Applied to Trickle-Bed Reactors SP - 75 UR - http://www.journals.pan.pl/dlibra/publication/edition/84929 T2 - Chemical and Process Engineering ER -