Effects of the variation of mass loading and particle density in gas–solid particle flow in pipes

Turbulent stresses and particle break-up criteria in particle-laden pipe flows

“…Same trends for the concentration profile of case 1B are found for upflow cases 1A/1C. Higher concentrations of inertial particles in the pipe center were also found for gas-solid upward flows by the numerical computations of Kartusinsky et al (2009). For downflows, there is a concentration peak at about r/R % 0.98.…”

“…The distribution of the dispersed phase may be crucial in determining collision frequency, breakage efficiency, agglomeration, reaction rates, deposition and entrainment; see Marchioli et al (2008). Many of these phenomena occur in practice in turbulent pipe flows, with applications ranging from pneumatic conveying systems and oil pipelines to chemical reactor design; see Kartusinsky et al (2009). Accurate determination of inertial particle distributions is therefore of considerable interest, in particular when break-up may occur.…”

Numerical study of upward particulate pipe flows at a constant Reynolds number

“…Pfeffer et al, 1966;Tsuji and Morikawa, 1982;Michaelides, 1983Michaelides, , 2006Tsuji et al, 1984;Davies, 1987;Gore and Crowe, 1989;Squires and Eaton, 1990;Yuan and Michaelides, 1992;Cabrejos and Klinzing, 1994;Gidaspow, 1994;Yarin and Hetsroni, 1994;Cao and Ahmadi, 1995;Crowe and Gillandt, 1998;Crowe, 2000;Sommerfeld, 2003;Kartushinsky and Michaelides, 2004;Kartushinsky et al, 2009aKartushinsky et al, , 2009bKartushinsky et al, , 2011 deal with various aspects of the behaviour of gas and solid particles in particulate pipe flows.…”

“…Additionally, the viscous drag force and the Magnus and Saffman lift forces are also taken into account. The presented numerical model makes use of the two-fluid model (Elghobashi and Abou-Arab, 1983;Rizk and Elghobashi, 1989;Deutsch and Simonin, 1991;Simonin, 1991;Reeks, 1992) and the Reynolds-averaged Navier-Stokes (RANS) approach (Kartushinsky et al, 2009a(Kartushinsky et al, , 2009b applied to gas and solid particles.…”

“…Within the frame of the two-fluid model, the gas and the particles are considered as two coexisting phases that span the entire flow domain (Kartushinsky et al, 2009a(Kartushinsky et al, , 2009b. Therefore, in order to describe the flow of the particulate phase within the two-fluid model, the presented model implements the RANS approach.…”