Use of CFD in modeling MMA solution polymerization in a CSTR

Multiscale Modeling of Mixing Behavior in a 3D Atom Transfer Radical Copolymerization Stirred-Tank Reactor

“…Therefore, a laminar regime is employed in our CFD model. Similar assumption is also accepted by many other researchers . The corresponding governing equations under steady state condition are shown as follows:…”

“…The results indicated that a total amount of 2 88 598 cells was adequate for simulation. What's more, the grid independence test was also carried out by Roudsari et al who simulated a MMA solution polymerization system in CSTRs, which were identical to those of this work. According to their research, the final 3D model had 3 15 087 cells.…”

“…All calculations are carried out in a 3D CSTR based on the simulation and experimental studies of Roudsari et al A sketch of the CSTR geometry is shown in Figure . The CSTR reactor consists of a round bottom cylinder with a dia­meter of 0.1016 and a height of 0.1346 m. No vertical baffles are placed around the tank wall.…”

“…However, the coupling of reaction kinetics and CFD model was not considered in their research, and, as a consequence, microscalar properties could not be predicted. Ein‐Mozaffari and co‐workers recently carried out simulations of polymerization system flow fields in stirred tanks by using FLUENT software . The group simulated a solution polymerization system in a CSTR and thoroughly studied the effects of reaction temperature, monomer concentration, agitation speed, residence time, input/output location on monomer conversion, and reactor mixing performance.…”

Effect of rheological parameters on non-ideal flows in the continuous-flow mixing of biopolymer solutions

“…It is essential to diagnose abnormalities in flow in the continuous-flow reactors because of a noteworthy effect of mixing efficiency on the product quality (Paul et al, 2004). The non-ideal flows have been identified by some researchers in the continuous-flow mixing of Newtonian-fluids in stirred vessels using CFD (Aubin et al, 2006;Khopkar et al, 2004), residence time distribution (Samaras et al, 2006), laser Doppler velocimetry (LDV) (Mavros et al, 1997(Mavros et al, , 2002a(Mavros et al, , 2002b and spectrophotometer (Roussinova and Kresta, 2008 tests (Ein-Mozaffari et al, 2003Patel et al, 2011Patel et al, , 2012aPatel et al, , 2012b, tomography (Patel et al, 2013a(Patel et al, , 2013b(Patel et al, , 2014a(Patel et al, , 2014b, CFD Ford et al, 2006;Fathi Roudsari et al, 2013), and residence time distribution (Jones et al, 2009). CFD is an effective tool for investigating the fluid flows in mixing systems and can be easily employed to obtain the mixing data that cannot be simply measured through the experimental tests.…”