Gas-solid particle mixture in vertical duct by RANS approachKartušinski, Aleksander; Michaelides, S.E.; Pihlak, UkuChemical and process engineering2005 / 3, p. 413-426 Particle motion in the vortices generated by a localized forceKaplanski, Felix; Rudi, Ülo; Tisler, SergeiChemical and process engineering2005 / 3, p. 427-436 https://yadda.icm.edu.pl/baztech/element/bwmeta1.element.baztech-article-BGPK-1183-5137