CFD modeling of gypsum scaling in cross-flow RO filters using moments of particle population balance

Uppu, Ashish; Chaudhuri, Abhijit; Das, Subrat; Prakash, N. Arun

doi:10.1016/j.jece.2020.104151

Cited by 10 publications

(4 citation statements)

References 42 publications

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“…To mitigate fouling or concentration polarization in a filtration system, a rotating disk or rotor blade can be adopted. The flows induced by these rotating parts increase the shear stresses on the membrane surface, promoting back transport of foulants via the rotating flows [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]. In addition, a rotating disk over a membrane can effectively enhance mass transfer by promoting mixing near the membrane surface.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, disks with vanes resulted in a higher permeate flux and a lower energy consumption compared with those from smooth disks. Recently, Chaudhuri et al extensively investigated changes of fouling, cake resistance, and concentration polarization for roto-dynamic reverse osmosis filtration systems [ 22 , 23 , 24 ]. As for a comprehensive review on dynamic filtration, one may refer to two papers by Jaffrin [ 25 , 26 ] and a recent paper by Cheng et al [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of the Rotating Disk Geometry on the Flow and Flux Enhancement in a Dynamic Filtration System

2023

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A numerical study was conducted to investigate the effect of rotating patterned disks on the flow and permeate flux in a dynamic filtration (DF) system. The DF system consists of a rotating patterned disk and a stationary housing with a circular flat membrane. The feed flow is driven by the rotating disk with the angular velocity ranging from 200 to 1000 rpm and the applied pressure difference between inlet and outlet ports. Wheel-shaped patterns are engraved on the disk surfaces to add perturbation to the flow field and improve the permeate flux in the filtration system. Five disks with varying numbers of patterns were used in numerical simulations to examine the effects of the number of patterns and the angular velocity of the disk on the flow and permeate flux in the DF system. The flow characteristics are studied using the velocity profiles, the cross-sectional velocity vectors, the vortex structures, and the shear stress distribution. The wheel-shaped patterns shift the central core layer in the circumferential velocity profile towards the membrane, leading to higher shear stresses at the membrane and higher flux compared to a plain disk. When the number of patterns on the disk exceeded eight at a fixed Reynolds number, there were significant increases in wall shear stress and permeate flux compared to a plain disk filtration system with no pattern.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of the Rotating Disk Geometry on the Flow and Flux Enhancement in a Dynamic Filtration System

2023

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“…Also, in a significant number of works the hollow fiber modules were considered [86, 106, 116, 121, 125-126, 137, 139], whereas the plate and frame modules were considered in a lesser number of the researches [91,[108][109]. The same situation is observed for the tubular modules [127,137], and also for the multichannel ceramic modules [124] and similar designs [152]. Also, in some works the original designs were considered including rotating [90,142] and test and lab cells [98,135,143].…”

Section: F15mentioning

confidence: 88%

“…For accounting of the unsteady-state conditions these equations can be rewritten in a following way [127]:…”

Section: Computational Fluid Dynamics Based Modelsmentioning

confidence: 99%

Simulation of Reverse Osmosis Process: Novel Approaches and Development Trends

Huliienko

Korniyenko

Muzyka

et al. 2022

JES

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Reverse osmosis is an essential technological separation process that has a large number of practical applications. The mathematical simulation is significant for designing and determining the most effective modes of membrane equipment operation and for a deep understanding of the processes in membrane units. This paper is an attempt at systematization and generalizing the results of the investigations dedicated to reverse osmosis simulation, which was published from 2011 to 2020. The main approaches to simulation were analyzed, and the scope of use of each of them was delineated. It was defined that computational fluid dynamics was the most used technique for reverse osmosis simulation; the intensive increase in using of molecular dynamics methods was pointed out. Since these two approaches provide the deepest insight into processes, it is likely that they will further be widely used for reverse osmosis simulations. At the same time, for the simulation of the membrane plant, it is reasonable to use the models that required the simplest solutions methods. The solution-diffusion model appears to be the most effective and flexible for these purposes. Therefore, this model was widely used in considering the period. The practical problems solved using each of the considered approaches were reviewed. Moreover, the software used for the solution of the mathematical models was regarded.

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A review of CFD simulation in pressure driven membrane with fouling model and anti-fouling strategy

Miao,

Ma,

Zhou

et al. 2024

Front. Environ. Sci. Eng.

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CFD modeling of gypsum scaling in cross-flow RO filters using moments of particle population balance

Cited by 10 publications

References 42 publications

The Effect of the Rotating Disk Geometry on the Flow and Flux Enhancement in a Dynamic Filtration System

The Effect of the Rotating Disk Geometry on the Flow and Flux Enhancement in a Dynamic Filtration System

Simulation of Reverse Osmosis Process: Novel Approaches and Development Trends

A review of CFD simulation in pressure driven membrane with fouling model and anti-fouling strategy

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