Computational fluid dynamic simulations of turbulent flow in a rotating cylinder electrode reactor in continuous mode of operation

Computational fluid dynamics simulations of single-phase flow in a filter-press flow reactor having a stack of three cells

“…These flow patterns can be obtained by solving the RANS and the averaged diffusion-convection equations. For the solution of the RANS equations, a standard k-ε turbulent model was used [9,19].…”

“…At the reactor outlet, the Cu 2+ ion concentration was measured online by a typical, two-electrode cell arrangement using copper wire electrodes; the cupric ions were quantified by the typical transient current at a holding cell potential of -0.9 V and the current response was measured with a potentiostat-galvanostat. It is important to mention that at a cell potential of -0.9 V, a convective-diffusion, mass transport limiting current for copper deposition controls the 13 cathodic process, ensuring that the response only depends on the cupric ion concentration [19]. This quantification method was sufficiently fast and sensitive to capture the rapid concentration changes at the reactor outlet as seen in the RTD curves shown below.…”

Validation of a Computational Fluid Dynamics Model for a Novel Residence Time Distribution Analysis in Mixing at Cross-Junctions

“…These last equations consider the turbulent flow applying Reynolds decomposition by its average over a small-time increment; the flow quantities are decomposed in a temporal mean and a fluctuating component [37]. The decomposition results in the RANS Equation (3) [38,39].…”

“…For the turbulent scale length, L T (long unit) can be obtained according to the pipe radius r, obtaining 7% of it. L T = 0.07r [39]. Therefore, the values were fixed on I T = 0.05 and L T = 0.07 × 0.0508 m = 0.003556 m.…”

The rotating cylinder electrode for studies of corrosion engineering and protection of metals—An illustrated review

“…Rivera and Nava found that the 4-plate counter electrode gave rise to a similar average mass transport to the RCE as a concentric geometry [46]. Employing the RANS equation, the same group developed and validated a model of the turbulent flow inside a continuous electrochemical reactor using an RCE [115].…”