Modeling and multi-objective optimization of square cyclones using CFD and neural networks

Safikhani, Hamed; Akhavan-Behabadi, M.A.; Nariman-Zadeh, N.; Abadi, M.J. Mahmood

doi:10.1016/j.cherd.2010.07.004

Cited by 47 publications

(16 citation statements)

References 15 publications

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“…The computational results of the three grid types are presented in Table 4. As seen the maximum difference between the results is less than 5%, so the grid template 490,164 produces grid independent results [48]. It has been observed that even 490,164 grid provides a sufficient grid independency.…”

Section: Strategy To Reach Convergencementioning

confidence: 86%

“…Also its successful applications in the most recent cyclone separators studies have been reported in many articles [e.g. [46][47][48]10,49] The Reynolds stress turbulence model (RSM) requires the solution of transport equations for each of the Reynolds stress components. It yields an accurate prediction on the swirl flow pattern, axial velocity, tangential velocity, cut-off diameter and pressure drop in cyclone simulations [50,31,42,10].…”

Section: Selection Of the Turbulence Modelmentioning

confidence: 99%

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The effect of cyclone inlet dimensions on the flow pattern and performance

Elsayed¹,

Lacor²

2011

Applied Mathematical Modelling

327

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a b s t r a c tThe effect of the cyclone inlet dimensions on the performance and flow field pattern has been investigated computationally using the Reynolds stress turbulence model (RSM) for five cyclone separators. The results show that, the maximum tangential velocity in the cyclone decreases with increasing the cyclone inlet dimensions. No acceleration occurs in the cyclone space (the maximum tangential velocity is nearly constant throughout the cyclone). Increasing the cyclone inlet dimensions decreases the pressure drop. The cyclone cut-off diameter increases with increasing cyclone inlet dimension (consequently, the cyclone overall efficiency decreases due to weakness of the vortex strength). The effect of changing the inlet width is more significant than the inlet height especially for the cut-off diameter. The optimum ratio of inlet width to inlet height b/a is from 0.5 to 0.7. Ó

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Section: Strategy To Reach Convergencementioning

confidence: 86%

Section: Selection Of the Turbulence Modelmentioning

confidence: 99%

The effect of cyclone inlet dimensions on the flow pattern and performance

Elsayed¹,

Lacor²

2011

Applied Mathematical Modelling

327

View full text Add to dashboard Cite

show abstract

“…In this paper, the mapping method [17] is used to compute and nd such a point. In this method, both objective functions are mapped between 0 and 1 and, then, the norm of their sum is calculated.…”

Section: Resultsmentioning

confidence: 99%

“…NSGA II algorithm is one of the best and most complete multi-objective optimization algorithms, which is used in this paper as well. This algorithm was rst proposed by Deb et al [16], and it has been used in recent years in various engineering-related applications [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization of Force Convective Heat Transfer in a Stack of Horizontal Channels Using CFD and Genetic Algorithms: a Comparison with Asymptotic Method Results

Safikhani

Shirazi

2017

Scientia Iranica

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Abstract. In this paper, by combining the Computational Fluid Dynamics (CFD) and NSGA II algorithm, the forced convective heat transfer ow in a stack of horizontal parallel plates has been multi-objectively optimized. In the optimization process, the distance between the plates in the set of parallel channels has been changed so as to simultaneously optimize the amount of heat transfer between the plates and uid and the pressure drop of the uid (maximization of heat transfer and minimization of pressure drop). The Pareto front, which illustrates the changes of heat transfer from the plates and the pressure drop of uid, simultaneously, has been presented in the results section. This result contains important information regarding the thermal designing of stack of channels subjected to forced convective heat transfer. The Pareto front has been obtained for four di erent uids that have di erent Prandtl (Pr) numbers (mercury, air, water, and oil), and the results related to each uid have been discussed. Finally, the multi-objective optimization results obtained in this paper have been compared with the results of the asymptotic analysis method (which is a single-objective method aimed at increasing the amount of heat transfer from plates) for internal uid ows, and useful information has been obtained.

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“…This visualization has been successfully used in control systems [36,37,38,15], safety systems analysis [52], and reliability engineering [50,51]. As pointed in [41], LD is one of the most useful methods for visualizing m-dimensional Pareto fronts.…”

Section: Introductionmentioning

confidence: 99%

Comparison of design concepts in multi-criteria decision-making using level diagrams

Reynoso-Meza

Blasco

Sanchis

et al. 2013

Information Sciences

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In this work, we address the evaluation of design concepts and the analysis of multiple Pareto fronts in multi-criteria decision-making using level diagrams. Such analysis is relevant when two (or more) design concepts with different design alternatives lie in the same objective space, but describe different Pareto fronts. Therefore, the problem can be stated as a Pareto front comparison between two (or more) design concepts that only differ in their relative complexity, implementation issues, or the theory applied to solve the problem at hand. Such analysis will help the decision maker obtain a better insight of a conceptual solution and be able to decide if the use of a complex concept is justified instead of a simple concept. The approach is validated in a set of multi-criteria decision making benchmark problems.

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Modeling and multi-objective optimization of square cyclones using CFD and neural networks

Cited by 47 publications

References 15 publications

The effect of cyclone inlet dimensions on the flow pattern and performance

The effect of cyclone inlet dimensions on the flow pattern and performance

Multi-Objective Optimization of Force Convective Heat Transfer in a Stack of Horizontal Channels Using CFD and Genetic Algorithms: a Comparison with Asymptotic Method Results

Comparison of design concepts in multi-criteria decision-making using level diagrams

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