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

Abstract

Computational fluid dynamics (CFD) simulations were carried out for single-phase flow in a pre-pilot filter press flow reactor with a stack of three cells. Velocity profiles and streamlines were obtained by solving the Reynolds-Averaged Navier-Stokes (

Electrochemical Engineering Assessment of a Novel 3D-Printed Filter-Press Electrochemical Reactor for Multipurpose Laboratory Applications

“…The pressure difference between the inlet and outlet of the electrochemical reactor is displayed in Figure . Curves were fitted to an empirical pressure drop correlation in the form of eq where Δ p is the pressure difference and α and β are coefficients, which describe the geometry and hydrodynamics, respectively . Coefficients for each configuration are given in Table S3.…”

“…A total of 3 mL of 0.5 M copper sulfate (Alfa Aesar) was injected instantaneously (1–2 s). Detection at the outlet was performed by means of electrochemical reduction of Cu­(II) to Cu(0) through a two-electrode copper wire sensor. , Chronoamperometric runs were recorded at −0.9 V using a μStat 400 portable bipotentiostat/galvanostat (Metrohm DropSens) while a constant flow rate was maintained. All configurations were evaluated by triplicate at four flow rates, namely, 5, 10, 15, and 20 L·h –1 .…”

Modeling and Simulation in Engineering Modeling of the Electrocoagulation Processes in Nonisothermal Conditions

“…Taking into account that the problem is to find the velocity field (2) and (3) with the given boundary conditions [5] is resolved [12], in particular, calculated velocity field and a number of other variables, such as filtration consumption, and replaced the variables x � x(φ, ψ), y � y(φ, ψ) in the system (7) and conditions (8), the corresponding "diffusion problem" [14,15] was received. e solutions with precision O(δ n+1 ) (δ -small parameter characterizing the predominance of the convective and mass-exchange components of the process of mass transfer, D(T) � δ d(T), |v| > v * ≫ δ) was found in the form of asymptotic series [16]:…”

“…For electrochemical systems, equation 1is simplified through the equation of mass continuity and the Navier-Stokes equation [4]. e basic equations for an incompressible turbulent flow can be formulated as follows [5]:…”

“…where D � D + D turb is the total diffusion coefficient, D is the coefficient of molecular diffusion, and D turb is the coefficient of turbulent diffusion, which depends on and the Schmidt turbulent number Sc T (according to the Kays-Crawford model [5]). e effectiveness of the formation of flocs (coagulant) to a large extent depends on the size of the formed bubbles [11].…”