A Dimensional optimization study on cyclone performance under the oscillating boundary condition

Nejad, Javad Vaziri Naeen; Abadi, Pouria Khalili Ata; Abadi, Danial Khalili Ata

doi:10.1016/j.cep.2022.109217

Cited by 3 publications

(3 citation statements)

References 44 publications

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“…It should be mentioned that the pressure drop does not determine the performance of a cyclone singly, and other factors, the most important of which is the separation efficiency, affect the performance of the cyclone separator strongly. It is worth mentioning that similar findings have been presented in some related research (Khalili Ata Abadi et al, 2023; Pandey et al, 2022).…”

Section: Resultssupporting

confidence: 89%

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A numerical assessment to select the optimal geometry of a specific cyclone separator of wheat flour processing

Emami,

Rostampour,

Rezvanivand Fanaei

et al. 2024

J Food Process Engineering

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In this study, the effect of the cyclone body height on the flow field within the specific cyclone and also on the performance parameters of the cyclone has been investigated. The five heights of the cyclone as various configurations were I = 600, II = 675, III = 750, IV = 825, and V = 900 mm. A pressure‐based solver was used and the turbulent Reynolds stress model was utilized to simulate the flow. Then, the Lagrangian discrete phase model was used to simulate the solid phase. As the height of the cyclone increases, the pressure drop decreases. Also, the best separation efficiency and the highest particle velocity value were achieved at a height of 750 mm. The maximum values of turbulence intensity, skin friction coefficient, and strain rate were obtained as negative components of cyclone performance at the cyclone body height of 900 mm. The height of 750 mm was recognized as the best height of the cyclone's body.Practical ApplicationsApplying numerical simulation in food processing is a novel method to minimize equipment construction and reach a high‐accuracy design. Computational fluid dynamics can provide an accurate and detailed flow analysis in the cyclone separators utilized in the flour processing plant. The dimensional analysis can help the researchers to achieve the optimum design and enhance the cyclone performance by reducing pressure drop and increasing separation efficiency. Also, the maintenance cost would be significantly reduced due to detecting the critical sections and strengthening them.

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Section: Resultssupporting

confidence: 89%

“…Validation chart. have been presented in some related research(Khalili Ata Abadi et al, 2023;Pandey et al, 2022).4.4 | Dynamic pressureThe dynamic pressure contours for different configurations are shownin Figure 11. According to the Bernoulli equation, in areas with high dynamic pressure, momentum acquires high values.…”

mentioning

confidence: 99%

A numerical assessment to select the optimal geometry of a specific cyclone separator of wheat flour processing

Emami,

Rostampour,

Rezvanivand Fanaei

et al. 2024

J Food Process Engineering

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“…Reynolds stress model (RSM) was selected as the turbulence model, QUICK discrete scheme was selected, and SIMPLE algorithm was selected for the pressure-velocity coupling method. In this study, the boundary conditions are defined as follows [9] .Inlet Conditions: Set as a Velocity-inlet boundary condition with the velocity direction oriented perpendicular to the boundary. The velocity magnitude is set to 5.26 m/s.…”

Section: Design and Selection Of Hydrocyclone Parametersmentioning

confidence: 99%

The Influence of a Novel Air Column Regulating Device on the Separation Performance of Hydrocyclones

Zhang,

Tian,

Hao

et al. 2024

Advances in Transdisciplinary Engineering

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Hydrocyclones are the irreplaceable separation device in the industry. However, in the process of using, the hydrocyclone has an air column, which reduce the separation efficiency. In this study, a novel air column regulating device was designed to enhance the stability of the air column during hydrocyclone operation and minimize its impact on the separation performance. A comparative study of the flow field characteristics between traditional hydrocyclones and hydrocyclones with the novel air column regulating device was carried out by numerical simulation. The novel air column regulating device could effectively reduce the air column diameter within the hydrocyclone, resulting in lower pressure loss and higher tangential velocity compared to traditional hydrocyclones. Thus, the separation efficiency could be further improved.

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Bubble dynamics under the influence of the Marangoni force induced by a stratified field of contamination

Mahmoudi,

Saeedipour,

Hlawitschka

2024

Exp. Comput. Multiph. Flow

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The Marangoni effect assumes significance in bubbly flows when temperature or concentration gradients exist in the domain. This study investigated the hydrodynamics of single bubbles under the influence of the Marangoni force induced by stratified fields of dissolved sugar, providing a numerical framework for examining these phenomena. A laboratory-scale bubble column and high-speed imaging were utilized to analyze the bubble behavior. The OpenFOAM-based geometric volume of the fluid solver was extended by incorporating the solutocapillary Marangoni effect, and a passive scalar transport equation for the sugar concentration was solved. The results revealed that small bubbles entering regions with elevated sugar concentrations experienced deceleration, transitioning into linear paths, while those departing from regions with high sugar concentrations exhibited fluctuations and meandering. Furthermore, the concentration gradient leads larger bubbles to meander throughout the entire column, without a notable increase in their velocity. The intensity of these behaviors is governed by the magnitude of the Marangoni force. The findings provide a better understanding of single bubble hydrodynamics in complex environments.

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A Dimensional optimization study on cyclone performance under the oscillating boundary condition

Cited by 3 publications

References 44 publications

A numerical assessment to select the optimal geometry of a specific cyclone separator of wheat flour processing

A numerical assessment to select the optimal geometry of a specific cyclone separator of wheat flour processing

The Influence of a Novel Air Column Regulating Device on the Separation Performance of Hydrocyclones

Bubble dynamics under the influence of the Marangoni force induced by a stratified field of contamination

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