Numerical Study of the Solid Volume Fraction and Pressure Drop of Fibrous Media by Response Surface Methodology

Zhu, Xiaojie; Qian, Fucai; Lü, Jidong; Zhang, H.

doi:10.1002/ceat.201200512

Cited by 9 publications

(2 citation statements)

References 14 publications

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“…We choose the quadratic response surface equation considering of all primary, secondary, and interaction terms. The response surface equation can be expressed as [19]:…”

Section: Verification Of Numerical Calculation Modelmentioning

confidence: 99%

A Model for Predicting the Erosion Rate Induced by the Use of a Selective Catalytic Reduction Denitrification Technology in Cement Kilns Flue Gas

Gao¹,

Qian²,

Sun³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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Selective catalytic reduction (SCR) is a technology by which nitrogen oxides are converted with the aid of a catalyst into diatomic nitrogen and water. It is known that the catalyst can be easily eroded if a cement kiln with a high-dust content is considered. To understand this process, numerical simulations have been carried out considering a single catalyst channel in order to study the collision and erosion of fly ash and catalysts at meso scale. Based on a response surface methodology, the effects of five factors on the erosion rate have been studied, namely, the catalyst particle velocity, the particle size, the particle concentration, the incidence angle and the catalyst porosity. The results show that the influence of particle velocity, particle size and particle concentration is statistically significant and the particle size and incidence angle have a significant effect on the erosion rate. A quadratic polynomial prediction model for the erosion rate of honeycomb catalysts in cement kiln SCR reactors is finally proposed to support the future optimization of these systems.

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“…We choose the quadratic response surface equation considering of all primary, secondary, and interaction terms. The response surface equation can be expressed as [19]:…”

Section: Verification Of Numerical Calculation Modelmentioning

confidence: 99%

A Model for Predicting the Erosion Rate Induced by the Use of a Selective Catalytic Reduction Denitrification Technology in Cement Kilns Flue Gas

Gao¹,

Qian²,

Sun³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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show abstract

“…Hosseini and Tafreshi 5 established a three-dimensional microstructure model of non-woven fibrous media based on the stochastic algorithm, and the discrete phase model (DPM) was used to track particles in the filter media. Zhu et al 6 and Sambaer et al 7 reconstructed the random three-dimensional structure models of fibrous media based on the image processing technology and simulated its filtration characteristics. However, these above studies regarded the particle as a mass point and did not consider the influence of the particle surface deposition on the fibre surface on the pressure differential and filtration efficiency.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of gas-solid flow characteristic of particles in fibrous media using OpenFOAM

Shu

Qian

Zhu

et al. 2019

Indoor and Built Environment

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Euler-Lagrangian numerical simulation framework of gas-solid two-phase flow was used to simulate the gas-solid flow characteristic in fibrous media using OpenFOAM in this study. The simulation results were compared with the empirical model and CFD-DEM method. In addition, the deposition morphology of particles, pressure differential and filtration efficiency in unsteady stage and simulation cost were also analysed with OpenFOAM. The results show that OpenFOAM can simulate the process of gas-solid two-phase flow in the fibrous media, and the particles are agglomerated on the surface of fibrous media and form a dendritic structure similar to the experimental observation. The pressure differential in unsteady stage would increase with the mass per unit area. The filtration efficiency would increase with a corresponding increase in the amount of deposition, but the growth rate would decline gradually. Compared with CFD-DEM method, the simulation accuracy with OpenFOAM is slightly lower, especially in the case of large the Stokes number, but the simulation cost is low, too. Therefore, it is necessary to choose one of the two methods according to the actual situation.

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Model Construction of Nonwovens with Hierarchically-Structured Fiber Morphology

Li,

Zhao,

et al. 2024

Fibers Polym

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Numerical Study of the Solid Volume Fraction and Pressure Drop of Fibrous Media by Response Surface Methodology

Cited by 9 publications

References 14 publications

A Model for Predicting the Erosion Rate Induced by the Use of a Selective Catalytic Reduction Denitrification Technology in Cement Kilns Flue Gas

A Model for Predicting the Erosion Rate Induced by the Use of a Selective Catalytic Reduction Denitrification Technology in Cement Kilns Flue Gas

Numerical simulation of gas-solid flow characteristic of particles in fibrous media using OpenFOAM

Model Construction of Nonwovens with Hierarchically-Structured Fiber Morphology

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