CFD modeling of a fixed-bed biofilm reactor coupling hydrodynamics and biokinetics

Abstract

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Numerical Simulation Applied to PVD Reactors: An Overview

“…By this way, the aerodynamics of vehicles like GM and Ford was deeply improved based on CFD studies. Currently, the simulation to characterize and solve problems using CFD is widely used due to the existence of a greater number of researchers involved in this issue, as well as due to the existence of more powerful computers [24][25][26][27][28][29][30][31][32][33].…”

“…The following sections will mention research works with FEM simulation, namely, the study of mechanical properties, defects and deformation material, wear and tribological performance of tools, contact between the coated PVD tool and the workpiece, PVD coating thermomechanical properties, coating fracture surface and CFD simulation, namely, process gas species into the sputtering chamber, temperature, pressure and velocity distribution optimization, fluid flow dynamics, thermal evaluation in a reactor design, evaluate, predict, improve and/or optimize processes like in biomass combustion [34,[38][39][40][41], in fuel combustion [42], in different conditions and reactors types, such as solar tubular, a continuous Photo Fuel Cell (PFC), tubular Pd-Ag membrane, industrial Claus and industrial PVD reactors, among others [24][25][26][27][28][29][30][31][32][33]. These challenges motivated researchers to improve performance of coatings, giving rise to several variants of coatings techniques.…”

“…The knowledge acquired about the problems and their formulation and characterization allows to better understand the real characteristics of the problem. In the end, an implementation and validation through a real-scale test must be done, making the model truly dependable [26,27,29]. The simulation used in many mathematical models to study the tribological material characteristics serves to improve the surfaces' protection, and thus, to be more resistant to wear and corrosion phenomena.…”

“…Prades et al [26] investigated the effect of the integration of fluid dynamics in fixed biofilm reactors. For this work, 2D bioreactor models with three different tools were developed and evaluated.…”

Optimal Surface Aeration Control in Full-Scale Oxidation Ditches through Energy Consumption Analysis

“…Decoupling the aeration from the fluidic motion is still a challenge for the optimal aeration [35]. The balance between aeration demand and fluidic velocity often fails in practice, resulting in excessive demand of aeration or motion in oxidation ditches.…”